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snapper.sql
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snapper.sql
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------------------------------------------------------------------------------
--
--
--
-- File name: snapper.sql (Oracle Session Snapper v4)
-- Purpose: An easy to use Oracle session-level performance measurement tool
-- which does NOT require any database changes nor creation of any
-- database objects!
--
-- This is very useful for ad-hoc performance diagnosis in environments
-- with restrictive change management processes, where creating
-- even temporary tables and PL/SQL packages is not allowed or would
-- take too much time to get approved.
--
-- All processing is done by a few sqlplus commands and an anonymous
-- PL/SQL block, all that's needed is SQLPLUS access (and if you want
-- to output data to server-side tracefile then execute rights on
-- DBMS_SYSTEM). Snapper only queries some V$ views (and in advanced
-- mode some X$ fixed tables, but it does not enable any traces nor
-- use oradebug.
--
-- The output is formatted the way it could be easily post-processed
-- by either Unix string manipulation tools or loaded to spreadsheet.
--
-- Snapper v4.20 Oracle 12c CDB and PDB grouping
-- Snapper v4 supports RAC and requires Oracle 10.1 or a newer DB version.
-- Snapper v3.5 works on Oracle versions starting from Oracle 9.2 (no RAC support)
--
-- Note1: The "ASH" functionality in Snapper just samples GV$SESSION view,
-- so you do NOT need Diagnostics Pack licenses to use Snapper's
-- "ASH" output
--
-- Note2: Snapper just reports you performance metric deltas in a snapsphot
-- and does not attempt to solve any performance problems for you.
-- You still need to interpret and understand these standard Oracle
-- metrics yourself
--
-- Author: Tanel Poder (tanel@tanelpoder.com)
-- Copyright: (c) Tanel Poder - https://tanelpoder.com - All rights reserved.
--
-- Disclaimer: This script is provided "as is", so no warranties or guarantees are
-- made about its correctness, reliability and safety. Use it at your
-- own risk!
--
-- Copyright: Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
--
-- Thanks to: Adrian Billington, Jamey Johnston, Marcus Mönnig, Hans-Peter Sloot,
-- Ronald Rood and Peter Bach for bugfixes, additions and improvements
--
--------------------------------------------------------------------------------
--
-- The Session Snapper v4.34 ( USE AT YOUR OWN RISK !!! )
-- (c) Tanel Poder ( https://tanelpoder.com )
--
--
-- +-----=====O=== Welcome to The Session Snapper! (Yes, you are looking at a cheap ASCII
-- / imitation of a fish and a fishing rod.
-- | Nevertheless the PL/SQL code below the
-- | fish itself should be helpful for quick
-- | catching of relevant Oracle performance
-- | information.
-- | So I wish you happy... um... snapping?
-- | )
-- | ......
-- | iittii,,....
-- ¿ iiffffjjjjtttt,,
-- ..;;ttffLLLLffLLLLLLffjjtt;;..
-- ..ttLLGGGGGGLLffLLLLLLLLLLLLLLffjjii,, ..ii,,
-- ffGGffLLLLLLjjttjjjjjjjjffLLLLLLLLLLjjii.. ..iijj;;....
-- ffGGLLiittjjttttttiittttttttttffLLLLLLGGffii.. ;;LLLLii;;;;..
-- ffEEGGffiittiittttttttttiiiiiiiittjjjjffLLGGLLii.. iiLLLLLLttiiii,,
-- ;;ffDDLLiiiitt,,ttttttttttttiiiiiiiijjjjjjffLLLLffttiiiiffLLGGLLjjtttt;;..
-- ..ttttjjiitt,,iiiiiittttttttjjjjttttttttjjjjttttjjttttjjjjffLLDDGGLLttii..
-- iittiitttt, ;;iittttttttjjjjjjjjjjttjjjjjjffffffjjjjjjjjjjLLDDGGLLtt;;..
-- jjjjttttii:. ..iiiiffLLGGLLLLLLLLffffffLLLLLLLLLLLLLLLLffffffLLLLLLfftt,,
-- iittttii,,;;,,ttiiiiLLLLffffffjjffffLLLLLLLLffLLffjjttttttttttjjjjffjjii..
-- ,,iiiiiiiiiittttttiiiiiiiiiijjffffLLLLLLLLffLLffttttttii;;;;iiiitttttttt;;..
-- ..iittttttffffttttiiiiiiiiiittttffjjjjffffffffttiittii:: ....,,;;iittii;;
-- ..;;iittttttttttttttttiiiiiittttttttttjjjjjjtttttt;; ..;;ii;;..
-- ..;;;;iittttttjjttiittttttttttttttjjttttttttii.. ....
-- ....;;;;ttjjttttiiiiii;;;;;;iittttiiii..
-- ..;;ttttii;;.... ..;;;;....
-- ..iiii;;..
-- ..;;,,
-- ....
--
--
-- Usage:
--
-- snapper.sql <ash[1-3]|stats|all>[,out][,trace][,pagesize=X][,gather=[s][t][w][l][e][b][a]]> <seconds_in_snap> <snapshot_count> <sid(s)_to_snap>
--
-- ash - sample session activity ASH style, waits and SQL_IDs from gv$session and
-- print a TOP SQL/wait report from these samples (this is the default from
-- Snapper 3.0). The columns chosen for TOP calculation are defined in CONFIG
-- section below.
--
-- ash=sql_id+event+wait_class
-- - the above example illustrates that you can also specify the gv$session
-- columns for TOP report yourself. The above example will show a TOP
-- activity report grouped by SQL_ID + EVENT + WAIT_CLASS
-- Note that the columns are separated by a "+" sign (as comma is a snapper
-- parameter separator, not ASH column separator)
--
-- ash1
-- ash2
-- ash3 - in addition to "ash" report you can have 3 more reported during the same
-- snapper sampling snapshot. Just include ash1=col1+col2,ash2=col3+col4,...
-- parameters if you want multiple TOP reports per Snapper snapshot
--
-- stats - sample gv$sesstat,gv$sess_time_model,gv$session_event performance counters
-- and report how much these stats increased (deltas) during Snapper run
-- all - report both ASH and stats sections
--
-- out - use dbms_output.put_line() for output. output will be seen only when
-- Snapper run completes due to dbms_output limitations. This is the default.
-- trace - write output to server process tracefile
-- (you must have execute permission on sys.dbms_system.ksdwrt() for that,
-- you can use both out and trace parameters together if you like )
--
-- pagesize - display header lines after X snapshots. if pagesize=0 don't display
-- any headers. pagesize=-1 will display a terse header only once
--
-- gather - if omitted, gathers s,t,w statistics (see below)
-- - if specified, then gather following:
--
-- Session-level stats:
-- s - Session Statistics from gv$sesstat
-- t - Session Time model info from gv$sess_time_model
-- w - Session Wait statistics from gv$session_event and gv$session_wait
--
-- Instance-level stats:
-- l - instance Latch get statistics ( gets + immediate_gets )
-- e - instance Enqueue lock get statistics
-- b - buffer get Where statistics -- useful in versions up to 10.2.x
-- a - All above
--
-- sinclude - if specified, then show only GV$SESSTAT stats which match the
-- LIKE pattern of sinclude (REGEXP_LIKE in 10g+)
-- linclude - if specified, then show only GV$LATCH latch stats which match the
-- LIKE pattern of linclude (REGEXP_LIKE in 10g+)
-- tinclude - if specified, then show only GV$SESS_TIME_MODEL stats which match the
-- LIKE pattern of tinclude (REGEXP_LIKE in 10g+)
-- winclude - if specified, then show only GV$SESSION_EVENT wait stats which match the
-- LIKE pattern of winclude (REGEXP_LIKE in 10g+)
--
-- you can combine above parameters in any order, separate them by commas
-- !!!don't use spaces as otherwise they are treated as next parameters by sqlplus !!!
-- !!!if you want to use spaces, enclose the whole sqlplus parameter in doublequotes !!!
--
-- <seconds_in_snap> - the number of seconds between taking snapshots
-- <snapshot_count> - the number of snapshots to take ( maximum value is power(2,31)-1 )
--
-- <sids_to_snap> can be either one sessionid, multiple sessionids separated by
-- commas or a SQL statement which returns a list of SIDs (if you need spaces
-- in that parameter text, enclose it in double quotes).
--
-- if you want to snap ALL sids, use "all" as value for
-- <sids_to_snap> parameter
--
-- alternatively you can use "select inst_id,sid from gv$session" as value for <sids_to_snap>
-- parameter to capture all SIDs. you can write any query (with multiple and/or)
-- conditions to specify complex rules for capturing only the SIDs you want
--
-- starting from version 3.0 there are further session_id selection options available in
-- instead of sid you can write such expressions for snapper's <sids_to_snap> parameter:
--
-- sid=123 -- take sid 123 only (the same as just writing 123)
-- user=tanel -- take all sessions where username is 'tanel' (case insensitive)
-- -- this is the same as writing following subquery for the
-- -- <sids_to_snap> parameter:
-- select inst_id,sid from gv$session where lower(username) like lower('tanel')
--
-- user=tanel% -- take all sessions where username begins with 'tanel%' (case insensitive)
-- -- the = means actually LIKE in SQL terms in this script
--
-- spid=1234 -- all these 3 parameters do the same thing:
-- ospid=1234 -- they look up the sessions(s) where the processes OS PID=1234
-- pid=1234 -- this is useful for quickly looking up what some OS process is doing
-- -- if it consumes too much of some resource
-- qc=123
-- qcsid=123 -- show query coordinator and all PX slave sessions
--
-- program=sqlplus% -- the following examples filter by corresponding gv$session coulmns
-- machine=linux01 -- machine
-- osuser=oracle -- os username
-- module=HR -- module
-- "action=Find Order" -- note the quotes because there is a space inside the parameter
-- -- value
-- client_id=tanelpoder -- show only sessions where client_identifier is set to tanelpoder
-- -- this is very useful in cases with (properly instrumented)
-- -- connection pools
--
--
-- Note that if you want to change some "advanced" snapper configuration parameters
-- or default values then search for CONFIG in this file to see configurable
-- variable section
--
--
-- Examples:
-- NB! Read the online examples, these are more detailed and list script output too!
--
-- http://tech.e2sn.com/oracle-scripts-and-tools/session-snapper
--
-- @snapper ash,stats 1 1 515
-- (Output one 1-second snapshot of session 515 using dbms_output and exit
-- Wait, gv$sesstat and gv$sess_time_model statistics are reported by default
-- Starting from V3 the ASH style session activity report is shown as well)
--
-- @snapper stats,gather=w 1 1 515
-- (Output one 1-second snapshot of session 515 using dbms_output and exit
-- only Wait event statistics are reported, no ASH)
--
-- @snapper ash,gather=st 1 1 515
-- (Output one 1-second snapshot of session 515 using dbms_output and exit
-- only gv$sesstat and gv$sess_Time_model statistics are gathered + ASH)
--
-- @snapper trace,ash,gather=stw,pagesize=0 10 90 117,210,313
-- (Write 90 10-second snapshots into tracefile for session IDs 117,210,313
-- all statistics are reported, do not print any headers)
--
-- @snapper trace,ash 900 999999999 all
-- (Take a snapshot of ALL sessions every 15 minutes and write the output to trace,
-- loop (almost) forever )
--
-- @snapper out,trace 300 12 "select inst_id,sid from gv$session where username='APPS'"
-- (Take 12 5-minute snapshots of all sessions belonging to APPS user, write
-- output to both dbms_output and tracefile)
--
-- Notes:
--
-- Snapper does not currently detect if a session with given SID has
-- ended and been recreated between snapshots, thus it may report bogus
-- statistics for such sessions. The check and warning for that will be
-- implemented in a future version.
--
--------------------------------------------------------------------------------
set termout off tab off verify off linesize 999 trimspool on trimout on null ""
--debug:
-- set termout on serveroutput on
-- Get parameters (future snapper v4.x extended syntax: @snapper <options> <"begin"|"end"|sleep#> <"snap_name"|snap_count> <sid>)
define snapper_options="&1"
define snapper_sleep="&2"
define snapper_count="&3"
define snapper_sid="&4"
-- The following code is required for making this script "dynamic" as due to
-- different Oracle versions, script parameters or granted privileges some
-- statements might not compile if not adjusted properly.
define _IF_ORA12_OR_HIGHER="--"
define _IF_LOWER_THAN_ORA12="--"
define _IF_ORA11_OR_HIGHER="--"
define _IF_LOWER_THAN_ORA11="--"
define _IF_DBMS_SYSTEM_ACCESSIBLE="/* dbms_system is not accessible"
-- /*dummy*/ -- this "dummy" is here just for avoiding VIM syntax highlighter going crazy due to previous line
define _IF_X_ACCESSIBLE="--"
-- plsql_object_id columns available in v$session (from 10.2.0.3)
define _YES_PLSQL_OBJ_ID="--"
define _NO_PLSQL_OBJ_ID=""
-- blocking_instance available in v$session (from 10.2)
define _YES_BLK_INST="--"
define _NO_BLK_INST=""
-- snapper v4 manual before/after snapshotting
define _MANUAL_SNAPSHOT="--"
define _USE_DBMS_LOCK=""
-- set the noprint's value to "noprint" if you don't want these temporary variables to show up in a sqlplus spool file
-- however, setting noprint="noprint" can cause errors in Oracle SQL Developer v4.0.x for some reason (OK in v4.1)
DEF noprint=""
col snapper_howtosleep &noprint new_value _HOW_TO_SLEEP
col snapper_ora18higher &noprint new_value _IF_ORA18_OR_HIGHER
col snapper_ora12higher &noprint new_value _IF_ORA12_OR_HIGHER
col snapper_ora12lower &noprint new_value _IF_LOWER_THAN_ORA12
col snapper_ora12 &noprint new_value _IF_ORA12_OR_HIGHER
col snapper_ora11higher &noprint new_value _IF_ORA11_OR_HIGHER
col snapper_ora11lower &noprint new_value _IF_LOWER_THAN_ORA11
col dbms_system_accessible &noprint new_value _IF_DBMS_SYSTEM_ACCESSIBLE
col x_accessible &noprint new_value _IF_X_ACCESSIBLE
col no_plsql_obj_id &noprint new_value _NO_PLSQL_OBJ_ID
col yes_plsql_obj_id &noprint new_value _YES_PLSQL_OBJ_ID
col no_blk_inst &noprint new_value _NO_BLK_INST
col yes_blk_inst &noprint new_value _YES_BLK_INST
col manual_snapshot &noprint new_value _MANUAL_SNAPSHOT
col use_dbms_lock &noprint new_value _USE_DBMS_LOCK
col snapper_sid &noprint new_value snapper_sid
-- sid_filter and inst_filter are the new RAC gv$ friendly way to filter sessions in Snapper v4
def sid_filter="/**/"
def inst_filter="/**/"
col sid_filter &noprint new_value sid_filter
col inst_filter &noprint new_value inst_filter
-- initialize, precompute and determine stuff
var v varchar2(100)
var x varchar2(10)
var sid_filter varchar2(4000)
var inst_filter varchar2(4000)
-- this is here for a reason
-- im extracting the first word of the snapper_sid (if its a complex expression, not just a single SID)
-- by relying on how DEF and & assignment treat spaces in strings
def ssid_begin=&snapper_sid
declare
o sys.dbms_describe.number_table;
p sys.dbms_describe.number_table;
l sys.dbms_describe.number_table;
a sys.dbms_describe.varchar2_table;
dty sys.dbms_describe.number_table;
def sys.dbms_describe.number_table;
inout sys.dbms_describe.number_table;
len sys.dbms_describe.number_table;
prec sys.dbms_describe.number_table;
scal sys.dbms_describe.number_table;
rad sys.dbms_describe.number_table;
spa sys.dbms_describe.number_table;
tmp number;
lv_sid_filter varchar2(4000);
lv_inst_filter varchar2(4000);
function get_filter(str in varchar2) return varchar2
is
ret varchar2(1000);
begin
if str like '%@%' then
--dbms_output.put_line('get_filter:1 str= '||str);
ret := lower(trim(regexp_replace(substr(str,instr(str,'=')+1), '^(.+)@([[:digit:]\*]+)(.*)', '\1')));
else
--dbms_output.put_line('get_filter:2 str= '||str);
ret := lower(trim(substr(str,instr(str,'=')+1)));
end if;
--dbms_output.put_line('get_filter = ' || ret);
return ret;
end get_filter;
begin
-- compute inst_filter
case
when regexp_instr('&ssid_begin','@') = 0 then
lv_inst_filter := '/* inst_filter */ s.inst_id=USERENV(''Instance'')';
when regexp_instr('&ssid_begin','@\*') > 0 or '&ssid_begin' like '(%' then
lv_inst_filter := '/* inst_filter */ 1=1';
when regexp_instr('&ssid_begin','@\d+') > 0 then
lv_inst_filter := 's.inst_id = ' || regexp_replace('&ssid_begin', '^(.+)@(\d+)(.*)', '\2');
else
lv_inst_filter := 's.inst_id=USERENV(''Instance'')';
--when regexp_instr('&ssid_begin','@\d+') > 0 then regexp_replace(snapper_sid, '^(.+)@\d+', '\1') || ' AND inst_id = ' || regexp_replace(snapper_sid, '^(.+)@(\d+)(.*)', '\2')
end case;
-- compute sid_filter
case
when trim(lower('&ssid_begin')) like 'con_id=%' then lv_sid_filter := 's.con_id in ('||get_filter('&ssid_begin')||')';
when trim(lower('&ssid_begin')) like 'sid=%' then lv_sid_filter := 's.sid in (' ||get_filter('&ssid_begin')||')';
when trim(lower('&ssid_begin')) like 'audsid=%' then lv_sid_filter := 's.audsid in ('||get_filter('&ssid_begin')||')';
when trim(lower('&ssid_begin')) like 'user=%' then lv_sid_filter := 'lower(username) like ''' ||get_filter('&ssid_begin')||'''';
when trim(lower('&ssid_begin')) like 'username=%' then lv_sid_filter := 'lower(username) like ''' ||get_filter('&ssid_begin')||'''';
when trim(lower('&ssid_begin')) like 'machine=%' then lv_sid_filter := 'lower(machine) like ''' ||get_filter('&ssid_begin')||'''';
when trim(lower('&ssid_begin')) like 'program=%' then lv_sid_filter := 'lower(program) like ''' ||get_filter('&ssid_begin')||'''';
when trim(lower('&ssid_begin')) like 'service=%' then lv_sid_filter := 'lower(service_name) like ''' ||get_filter('&ssid_begin')||'''';
when trim(lower('&ssid_begin')) like 'module=%' then lv_sid_filter := 'lower(module) like ''' ||get_filter('&ssid_begin')||'''';
when trim(lower('&ssid_begin')) like 'action=%' then lv_sid_filter := 'lower(action) like ''' ||get_filter('&ssid_begin')||'''';
when trim(lower('&ssid_begin')) like 'osuser=%' then lv_sid_filter := 'lower(osuser) like ''' ||get_filter('&ssid_begin')||'''';
when trim(lower('&ssid_begin')) like 'client_id=%' then lv_sid_filter := 'lower(client_identifier) like '''||get_filter('&ssid_begin')||'''';
when trim(lower('&ssid_begin')) like 'spid=%' then lv_sid_filter := '(s.inst_id,s.paddr) in (select /*+ UNNEST */ inst_id,addr from gv$process where spid in ('||get_filter('&ssid_begin')||'))';
when trim(lower('&ssid_begin')) like 'ospid=%' then lv_sid_filter := '(s.inst_id,s.paddr) in (select /*+ UNNEST */ inst_id,addr from gv$process where spid in ('||get_filter('&ssid_begin')||'))';
when trim(lower('&ssid_begin')) like 'pid=%' then lv_sid_filter := '(s.inst_id,s.paddr) in (select /*+ UNNEST */ inst_id,addr from gv$process where spid in ('||get_filter('&ssid_begin')||'))';
when trim(lower('&ssid_begin')) like 'qcsid=%' then lv_sid_filter := '(s.inst_id,s.sid) in (select /*+ NO_UNNEST */ inst_id,sid from gv$px_session where qcsid in ('||get_filter('&ssid_begin')||'))';
when trim(lower('&ssid_begin')) like 'qc=%' then lv_sid_filter := '(s.inst_id,s.sid) in (select /*+ NO_UNNEST */ inst_id,sid from gv$px_session where qcsid in ('||get_filter('&ssid_begin')||'))';
when trim(lower('&ssid_begin')) like 'all%' then lv_sid_filter := '1=1';
when trim(lower('&ssid_begin')) like 'bg%' then lv_sid_filter := 'type=''BACKGROUND''';
when trim(lower('&ssid_begin')) like 'fg%' then lv_sid_filter := 'type=''USER''';
when trim(lower('&ssid_begin')) like 'smon%' then lv_sid_filter := 'program like ''%(SMON)%''';
when trim(lower('&ssid_begin')) like 'pmon%' then lv_sid_filter := 'program like ''%(PMON)%''';
when trim(lower('&ssid_begin')) like 'ckpt%' then lv_sid_filter := 'program like ''%(CKPT)%''';
when trim(lower('&ssid_begin')) like 'lgwr%' then lv_sid_filter := 'program like ''%(LG__)%'''; -- 12c multiple adaptive LGWR workers
when trim(lower('&ssid_begin')) like 'dbwr%' then lv_sid_filter := 'regexp_like(program, ''.*\((DBW.|BW..)\).*'', ''i'')';
when trim(lower('&ssid_begin')) like 'select%' then lv_sid_filter := q'{(s.inst_id,s.sid) in (&snapper_sid)}';
when trim(lower('&ssid_begin')) like '(%' then lv_inst_filter := '/* inst_filter2 */ 1=1'; lv_sid_filter := q'{(s.inst_id,s.sid) in (&snapper_sid)}';
else lv_sid_filter := '/* sid_filter_else_cond */ s.sid in ('||get_filter('&ssid_begin')||')';
end case;
:inst_filter := lv_inst_filter;
:sid_filter := lv_inst_filter||' and '||lv_sid_filter;
-- this block determines whether dbms_system.ksdwrt is accessible to us
-- dbms_describe is required as all_procedures/all_objects may show this object
-- even if its not executable by us (thanks to o7_dictionary_accessibility=false)
begin
execute immediate 'select count(*) from x$kcbwh where rownum = 1' into tmp;
:x:= ' '; -- x$ tables are accessible, so dont comment any lines out
exception
when others then null;
end;
sys.dbms_describe.describe_procedure(
'DBMS_SYSTEM.KSDWRT', null, null,
o, p, l, a, dty, def, inout, len, prec, scal, rad, spa
);
-- we never get to following statement if dbms_system is not accessible
-- as sys.dbms_describe will raise an exception
:v:= '-- dbms_system is accessible';
exception
when others then null;
end;
/
-- this query populates some sqlplus variables required for dynamic compilation used below
with mod_banner as (
select
replace(banner,' 9.','09.') banner
from
v$version
where rownum = 1
)
select
case when substr(banner, instr(banner, 'Release ')+8,2) >= '18' then 'dbms_session.sleep' else 'dbms_lock.sleep' end snapper_howtosleep,
case when substr(banner, instr(banner, 'Release ')+8,2) >= '18' then '' else '--' end snapper_ora18higher,
case when substr(banner, instr(banner, 'Release ')+8,2) >= '12' then '' else '--' end snapper_ora12higher,
case when substr(banner, instr(banner, 'Release ')+8,2) < '12' then '' else '--' end snapper_ora12lower,
case when substr(banner, instr(banner, 'Release ')+8,2) = '11' then '' else '--' end snapper_ora11higher,
case when substr(banner, instr(banner, 'Release ')+8,2) < '11' then '' else '--' end snapper_ora11lower,
nvl(:v, '/* dbms_system is not accessible') dbms_system_accessible,
nvl(:x, '--') x_accessible,
case when substr( banner, instr(banner, 'Release ')+8, instr(substr(banner,instr(banner,'Release ')+8),' ') ) >= '10.2' then '' else '--' end yes_blk_inst,
case when substr( banner, instr(banner, 'Release ')+8, instr(substr(banner,instr(banner,'Release ')+8),' ') ) >= '10.2' then '--' else '' end no_blk_inst,
case when substr( banner, instr(banner, 'Release ')+8, instr(substr(banner,instr(banner,'Release ')+8),' ') ) >= '10.2.0.3' then '' else '--' end yes_plsql_obj_id,
case when substr( banner, instr(banner, 'Release ')+8, instr(substr(banner,instr(banner,'Release ')+8),' ') ) >= '10.2.0.3' then '--' else '' end no_plsql_obj_id,
case when lower('&snapper_options') like '%,begin%' or lower('&snapper_options') like 'begin%' or lower('&snapper_options') like '%,end%' or lower('&snapper_options') like 'end%' then '' else '--' end manual_snapshot,
case when lower('&snapper_options') like '%,begin%' or lower('&snapper_options') like 'begin%' or lower('&snapper_options') like '%,end%' or lower('&snapper_options') like 'end%' then '--' else '' end use_dbms_lock,
:sid_filter sid_filter,
:inst_filter inst_filter
from
mod_banner
/
-- current workaround: 1st serveroutput command below is for sql developer compatibility
-- 2nd is for sqlplus, so that newlines and leading spaces get properly printed
set termout off
set serveroutput on size 1000000
set serveroutput on size 1000000 format wrapped
set termout on
prompt Sampling SID &4 with interval &snapper_sleep seconds, taking &snapper_count snapshots...
-- let the Snapping start!!!
-- main()
declare
-- Snapper start
-- forward declarations
procedure output(p_txt in varchar2);
procedure fout;
function tptformat( p_num in number,
p_stype in varchar2 default 'STAT',
p_precision in number default 2,
p_base in number default 10,
p_grouplen in number default 3
)
return varchar2;
function getopt( p_parvalues in varchar2,
p_extract in varchar2,
p_delim in varchar2 default ','
)
return varchar2;
-- type, constant, variable declarations
-- trick for holding 32bit UNSIGNED event and stat_ids in 32bit SIGNED PLS_INTEGER
pls_adjust constant number(10,0) := power(2,31) - 1;
type srec is record (ts timestamp, stype varchar2(4), inst_id number, sid number, statistic# number, value number, event_count number );
type stab is table of srec index by pls_integer;
type ltab is table of srec index by varchar2(100); -- lookup tab for various average calculation
s1 stab;
s2 stab;
l1 ltab;
l2 ltab;
type snrec is record (stype varchar2(4), statistic# number, name varchar2(100));
type sntab is table of snrec index by pls_integer;
sn_tmp sntab;
sn sntab;
type sntab_reverse is table of snrec index by varchar2(100); -- used for looking up stat id from stat name
sn_reverse sntab_reverse;
tmp_varchar2 varchar2(1000); -- misc
function get_useful_average(c in srec /* curr_metric */, p in srec /* all_prev_metrics */) return varchar2;
type tmp_sestab is table of gv$session%rowtype index by pls_integer;
type sestab is table of gv$session%rowtype index by varchar2(20);
g_sessions sestab;
g_empty_sessions sestab;
type hc_tab is table of number index by pls_integer; -- index is sql hash value
type ses_hash_tab is table of hc_tab index by pls_integer; -- index is SID
g_ses_hash_tab ses_hash_tab;
g_empty_ses_hash_tab ses_hash_tab;
-- dbms_debug_vc2coll is a built-in collection present in every oracle db
g_ash sys.dbms_debug_vc2coll := new sys.dbms_debug_vc2coll();
g_empty_ash sys.dbms_debug_vc2coll := new sys.dbms_debug_vc2coll();
g_snap1 sys.dbms_debug_vc2coll;
g_snap2 sys.dbms_debug_vc2coll;
g_ash_samples_taken number := 0;
g_count_statname number;
g_count_eventname number;
g_mysid number;
top_n number;
i number;
a number;
b number;
c number;
delta number;
evcnt number;
changed_values number;
pagesize number:=99999999999999;
missing_values_s1 number := 0;
missing_values_s2 number := 0;
disappeared_sid number := 0;
lv_curr_sid number := 0; -- used for determining whether to print an empty line between session stats
d1 timestamp(6);
d2 timestamp(6);
ash_date1 date;
ash_date2 date;
lv_gather varchar2(1000);
gv_header_string varchar2(1000);
lv_data_string varchar2(1000);
lv_ash varchar2(1000);
lv_stats varchar2(1000);
gather_stats number := 0;
gather_ash number := 0;
g_snap_begin varchar2(1000);
g_snap_end varchar2(1000);
-- CONFIGURABLE STUFF --
-- this sets what are the default ash sample TOP reporting group by columns
g_ash_columns varchar2(1000) := 'inst_id + sql_id + sql_child_number + event + wait_class';
g_ash_columns1 varchar2(1000) := 'inst_id + event + p1 + wait_class';
g_ash_columns2 varchar2(1000) := 'inst_id + sid + user + machine + program';
g_ash_columns3 varchar2(1000) := 'inst_id + plsql_object_id + plsql_subprogram_id + sql_id';
g_ash_columns4 varchar2(1000) := 'con_id + inst_id + sql_id + sql_child_number + event + wait_class';
g_ash_columns5 varchar2(1000) := 'con_id + inst_id + event + p1 + wait_class';
g_ash_columns6 varchar2(1000) := 'con_id + inst_id + sid + user + machine + program';
-- output column configuration
output_header number := 0; -- 1=true 0=false
output_username number := 1; -- v$session.username
output_inst number := 0; -- inst
output_sid number := CASE WHEN dbms_utility.is_cluster_database = TRUE THEN 0 ELSE 1 END; -- just sid
output_inst_sid number := CASE WHEN dbms_utility.is_cluster_database = TRUE THEN 1 ELSE 0 END; -- inst_id and sid together
output_time number := 0; -- time of snapshot start
output_seconds number := 0; -- seconds in snapshot (shown in footer of each snapshot too)
output_stype number := 1; -- statistic type (WAIT,STAT,TIME,ENQG,LATG,...)
output_sname number := 1; -- statistic name
output_delta number := 1; -- raw delta
output_delta_s number := 0; -- raw delta normalized to per second
output_hdelta number := 0; -- human readable delta
output_hdelta_s number := 1; -- human readable delta normalized to per second
output_percent number := 1; -- percent of total time/samples
output_eventcnt number := 1; -- wait event count
output_eventcnt_s number := 1; -- wait event count
output_eventavg number := 1; -- average wait duration
output_pcthist number := 1; -- percent of total visual bar (histogram) -- Histograms seem to work for me on 9.2.0.7 + - JBJ2)
output_actses number := 1; -- show Average Active Sessions (AAS) in "ASH" activity section
output_actses_pct number := 1; -- show AAS as a percentage of a single thread time
-- column widths in ASH report output
w_inst_id number := 4;
w_sid number := 6;
w_username number := 20;
w_machine number := 20;
w_terminal number := 20;
w_program number := 25;
w_event number := 35;
w_wait_class number := 15;
w_state number := 8;
w_p1 number := 20;
w_p2 number := 20;
w_p3 number := 20;
w_row_wait_obj# number := 10;
w_row_wait_file# number := 6;
w_row_wait_block# number := 10;
w_row_wait_row# number := 6;
w_blocking_session_status number := 15;
w_blocking_instance number := 12;
w_blocking_session number := 12;
w_sql_hash_value number := 12;
w_sql_id number := 15;
w_sql_child_number number := 9;
w_plsql_entry_object_id number := 10;
w_plsql_entry_subprogram_id number := 10;
w_plsql_object_id number := 10;
w_plsql_subprogram_id number := 10;
w_module number := 25;
w_action number := 25;
w_client_identifier number := 25;
w_service_name number := 25;
w_con_id number := 6;
w_actses number := 8;
w_actses_pct number := 10;
-- END CONFIGURABLE STUFF --
-- constants for ash collection extraction from the vc2 collection
s_inst_id constant number := 1 ;
s_sid constant number := 2 ;
s_username constant number := 3 ;
s_machine constant number := 4 ;
s_terminal constant number := 5 ;
s_program constant number := 6 ;
s_event constant number := 7 ;
s_wait_class constant number := 8 ;
s_state constant number := 9 ;
s_p1 constant number := 10 ;
s_p2 constant number := 11 ;
s_p3 constant number := 12 ;
s_row_wait_obj# constant number := 13 ;
s_row_wait_file# constant number := 14 ;
s_row_wait_block# constant number := 15 ;
s_row_wait_row# constant number := 16 ;
s_blocking_session_status constant number := 17 ;
s_blocking_instance constant number := 18 ;
s_blocking_session constant number := 19 ;
s_sql_hash_value constant number := 20 ;
s_sql_id constant number := 21 ;
s_sql_child_number constant number := 22 ;
s_plsql_entry_object_id constant number := 23 ;
s_plsql_entry_subprogram_id constant number := 24 ;
s_plsql_object_id constant number := 25 ;
s_plsql_subprogram_id constant number := 26 ;
s_module constant number := 27 ;
s_action constant number := 28 ;
s_client_identifier constant number := 29 ;
s_service_name constant number := 30 ;
s_con_id constant number := 31 ;
-- constants for ash collection reporting, which columns to show in report
c_inst_id constant number := power(2, s_inst_id );
c_sid constant number := power(2, s_sid );
c_username constant number := power(2, s_username );
c_machine constant number := power(2, s_machine );
c_terminal constant number := power(2, s_terminal );
c_program constant number := power(2, s_program );
c_event constant number := power(2, s_event );
c_wait_class constant number := power(2, s_wait_class );
c_state constant number := power(2, s_state );
c_p1 constant number := power(2, s_p1 );
c_p2 constant number := power(2, s_p2 );
c_p3 constant number := power(2, s_p3 );
c_row_wait_obj# constant number := power(2, s_row_wait_obj# );
c_row_wait_file# constant number := power(2, s_row_wait_file# );
c_row_wait_block# constant number := power(2, s_row_wait_block# );
c_row_wait_row# constant number := power(2, s_row_wait_row# );
c_blocking_session_status constant number := power(2, s_blocking_session_status );
c_blocking_instance constant number := power(2, s_blocking_instance );
c_blocking_session constant number := power(2, s_blocking_session );
c_sql_hash_value constant number := power(2, s_sql_hash_value );
c_sql_id constant number := power(2, s_sql_id );
c_sql_child_number constant number := power(2, s_sql_child_number );
c_plsql_entry_object_id constant number := power(2, s_plsql_entry_object_id );
c_plsql_entry_subprogram_id constant number := power(2, s_plsql_entry_subprogram_id);
c_plsql_object_id constant number := power(2, s_plsql_object_id );
c_plsql_subprogram_id constant number := power(2, s_plsql_subprogram_id );
c_module constant number := power(2, s_module );
c_action constant number := power(2, s_action );
c_client_identifier constant number := power(2, s_client_identifier );
c_service_name constant number := power(2, s_service_name );
c_con_id constant number := power(2, s_con_id );
/*---------------------------------------------------
-- proc for outputting data to trace or dbms_output
---------------------------------------------------*/
procedure output(p_txt in varchar2) is
begin
if (getopt('&snapper_options', 'out') is not null)
or
(getopt('&snapper_options', 'out') is null and getopt('&snapper_options', 'trace') is null)
then
dbms_output.put_line(p_txt);
end if;
-- The block below is a sqlplus trick for conditionally commenting out PL/SQL code
&_IF_DBMS_SYSTEM_ACCESSIBLE
if getopt('&snapper_options', 'trace') is not null then
sys.dbms_system.ksdwrt(1, p_txt);
sys.dbms_system.ksdfls;
end if;
-- */
end; -- output
/*---------------------------------------------------
-- function for converting interval datatype to microseconds
---------------------------------------------------*/
function get_seconds(i interval day to second) return number
as
s NUMBER;
begin
s := to_number(extract(second from i)) +
to_number(extract(minute from i)) * 60 +
to_number(extract(hour from i)) * 60 * 60 +
to_number(extract(day from i)) * 60 * 60 * 24;
--output('get_seconds '||to_char(i)||' = '||to_char(s));
return s;
end get_seconds;
/*---------------------------------------------------
-- proc for outputting data, utilizing global vars
---------------------------------------------------*/
procedure fout is
l_output_username VARCHAR2(100);
gsid varchar2(20);
begin
--if s2(b).stype='WAIT' then output( 'DEBUG WAIT ' || sn(s2(b).statistic#).name || ' ' || delta ); end if;
--output( 'DEBUG, Entering fout(), b='||to_char(b)||' sn(s2(b).statistic#='||s2(b).statistic# );
--output( 'DEBUG, In fout(), a='||to_char(a)||' b='||to_char(b)||' s1.count='||s1.count||' s2.count='||s2.count||' s2.count='||s2.count);
gsid := trim(to_char(s2(b).inst_id))||','||trim(to_char(s2(b).sid));
if output_username = 1 then
begin
l_output_username := nvl( g_sessions(gsid).username, substr(g_sessions(gsid).program, instr(g_sessions(gsid).program,'(')) );
exception
when no_data_found then l_output_username := 'error';
when others then raise;
end;
end if;
-- DEBUG
--output('before');
--output (CASE WHEN output_eventavg = 1 THEN CASE WHEN s2(b).stype IN ('WAIT') THEN lpad(tptformat(delta / CASE WHEN evcnt = 0 THEN 1 ELSE evcnt END, s2(b).stype), 10, ' ')||' average wait' ELSE get_useful_average(s2(b), s1(a)) END END);
--output('after');
output( CASE WHEN output_header = 1 THEN 'SID= ' END
|| CASE WHEN output_inst = 1 THEN to_char(s2(b).inst_id, '9999')||', ' END
|| CASE WHEN output_sid = 1 THEN to_char(s2(b).sid,'999999')||', ' END
|| CASE WHEN output_inst_sid = 1 THEN to_char(s2(b).sid,'99999')||' '||lpad('@'||trim(to_char(s2(b).inst_id, '99')),3)||', ' END
|| CASE WHEN output_username = 1 THEN rpad(CASE s2(b).sid WHEN -1 THEN ' ' ELSE NVL(l_output_username, ' ') END, 10)||', ' END
|| CASE WHEN output_time = 1 THEN to_char(d1, 'YYYYMMDD HH24:MI:SS')||', ' END
|| CASE WHEN output_seconds = 1 THEN to_char(case get_seconds(d2-d1) when 0 then &snapper_sleep else get_seconds(d2-d1) end, '9999999')||', ' END
|| CASE WHEN output_stype = 1 THEN s2(b).stype||', ' END
|| CASE WHEN output_sname = 1 THEN rpad(sn(s2(b).statistic#).name, 58, ' ')||', ' END
|| CASE WHEN output_delta = 1 THEN to_char(delta, '999999999999')||', ' END
|| CASE WHEN output_delta_s = 1 THEN to_char(delta/(case get_seconds(d2-d1) when 0 then &snapper_sleep else get_seconds(d2-d1) end),'999999999')||', ' END
|| CASE WHEN output_hdelta = 1 THEN lpad(tptformat(delta, s2(b).stype), 10, ' ')||', ' END
|| CASE WHEN output_hdelta_s = 1 THEN lpad(tptformat(delta/(case get_seconds(d2-d1) when 0 then &snapper_sleep else get_seconds(d2-d1) end ), s2(b).stype), 10, ' ')||', ' END
|| CASE WHEN output_percent = 1 THEN CASE WHEN s2(b).stype IN ('TIME','WAIT') THEN to_char(delta/CASE get_seconds(d2-d1) WHEN 0 THEN &snapper_sleep ELSE get_seconds(d2-d1) END / 10000, '9999.9')||'%' ELSE ' ' END END||', '
|| CASE WHEN output_pcthist = 1 THEN CASE WHEN s2(b).stype IN ('TIME','WAIT') THEN rpad(rpad('[', ceil(round(delta/CASE get_seconds(d2-d1) WHEN 0 THEN &snapper_sleep ELSE get_seconds(d2-d1) END / 100000,1))+1, CASE WHEN s2(b).stype IN ('WAIT') THEN 'W' WHEN sn(s2(b).statistic#).name = 'DB CPU' THEN '@' ELSE '#' END),11,' ')||']' ELSE ' ' END END||', '
|| CASE WHEN output_eventcnt = 1 THEN CASE WHEN s2(b).stype IN ('WAIT') THEN to_char(evcnt, '99999999') ELSE ' ' END END||', '
|| CASE WHEN output_eventcnt_s = 1 THEN CASE WHEN s2(b).stype IN ('WAIT') THEN lpad(tptformat((evcnt / case get_seconds(d2-d1) when 0 then &snapper_sleep else get_seconds(d2-d1) end ), 'STAT' ), 10, ' ') ELSE ' ' END END||', '
|| CASE WHEN output_eventavg = 1 THEN CASE WHEN s2(b).stype IN ('WAIT') THEN lpad(tptformat(delta / CASE WHEN evcnt = 0 THEN 1 ELSE evcnt END, s2(b).stype), 10, ' ')||' average wait' ELSE get_useful_average(s2(b), s1(a)) END END
);
end;
/*---------------------------------------------------
-- lookup stat delta helper calculator (l2.value - l1.value)
---------------------------------------------------*/
function get_delta(metric_id in varchar2) return number
is
rec1 srec;
rec2 srec;
val1 number;
val2 number;
d number;
begin
begin
val1 := l1(metric_id).value;
exception
when no_data_found then val1 := 0;
end;
begin
val2 := l2(metric_id).value;
exception
when no_data_found then val2 := 0;
end;
d := val2 - NVL(val1, 0);
return d;
end get_delta;
/*---------------------------------------------------
-- delta helper function for convenience - it allows to specify any metric delta, if not specified then get current one
---------------------------------------------------*/
function gd(c in srec, metric_type in varchar2 DEFAULT NULL, metric_name in varchar2 DEFAULT NULL) return number
is
str varchar2(1000);
tmp_delta number;
begin
if metric_type || metric_name is null then
str := c.stype||','||trim(to_char(c.inst_id))||','||trim(to_char(c.sid))||','||trim(to_char(c.statistic#,'999999999999999999999999'));
else
begin
str := trim(metric_type)||','||trim(to_char(c.inst_id))||','||trim(to_char(c.sid))||','||trim(to_char(sn_reverse(metric_type||','||metric_name).statistic#));
exception
when no_data_found then return 0;
end;
end if;
tmp_delta := get_delta(str);
--output('tmp_delta '||c.stype||' '||tmp_delta);
return tmp_delta;
-- return get_delta(str);
end;
/*---------------------------------------------------
-- function for calculating useful averages and ratios between metrics
-- it is totally OK to show ratios together with raw values they have been derived from
---------------------------------------------------*/
function get_useful_average(c in srec /* curr_metric */, p in srec /* all_prev_metrics */) return varchar2
is
ret varchar2(1000);
mt varchar2(100) := c.stype; -- metric_type
mn varchar2(100) := sn(c.statistic#).name; -- metric_name
begin
case
when mt = 'STAT' then
case
when mn LIKE 'session _ga memory%' then ret := lpad( tptformat(gd(c), 'STAT'), 10) || ' actual value in end of snapshot';
when mn LIKE '%ed%cursors current' then ret := lpad( tptformat(gd(c), 'STAT'), 10) || ' actual value in end of snapshot';
when mn = 'file io service time' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'physical read total IO requests')+gd(c, 'STAT', 'physical write total IO requests'),0), 'TIME'), 10) || ' bad guess of IO service time per IO request';
when mn = 'file io wait time' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'physical read total IO requests')+gd(c, 'STAT', 'physical write total IO requests'),0), 'TIME'), 10) || ' bad guess of IO wait time per IO request';
when mn = 'redo synch time overhead (usec)' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'redo synch writes' ),0), 'TIME'), 10) || ' FG wakeup overhead per log file sync';
when mn = 'redo write worker delay (usec)' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'redo write worker delay count'),0), 'TIME'), 10) || ' per LGWR post';
when mn = 'redo write time (usec)' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'redo writes' ),0), 'TIME'), 10) || ' per redo write';
when mn = 'redo write gather time' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'redo writes' ),0), 'TIME'), 10) || ' per redo write';
when mn = 'redo write schedule time' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'redo writes' ),0), 'TIME'), 10) || ' per redo write';
when mn = 'redo write issue time' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'redo writes' ),0), 'TIME'), 10) || ' per redo write';
when mn = 'redo write finish time' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'redo writes' ),0), 'TIME'), 10) || ' per redo write';
when mn = 'redo write total time' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'redo writes' ),0), 'TIME'), 10) || ' per redo write';
when mn = 'recursive calls' then ret := lpad( tptformat(gd(c, 'STAT', 'recursive cpu usage') * 10000 / nullif(gd(c), 0), 'TIME'), 10) || ' recursive CPU per recursive call';
when mn = 'recursive cpu usage' then ret := lpad( tptformat(gd(c) * 10000, 'TIME'), 10) || ' total recursive CPU usage';
when mn = 'parse time cpu' then ret := lpad( tptformat(gd(c) * 10000, 'TIME'), 10) || ' total parse time CPU';
when mn = 'parse time elapsed' then ret := lpad( tptformat(gd(c) * 10000, 'TIME'), 10) || ' total parse time elapsed';
when mn = 'CPU used when call started' then ret := lpad( tptformat(gd(c) * 10000, 'TIME'), 10) || ' total CPU used when call started';
when mn = 'CPU used by this session' then ret := lpad( tptformat(gd(c) * 10000, 'TIME'), 10) || ' total CPU used by this session';
when mn = 'DB Time' then ret := lpad( tptformat(gd(c) * 10000, 'TIME'), 10) || ' total DB Time';
when mn = 'physical write IO requests' then ret := lpad( tptformat(gd(c, 'STAT', 'physical write bytes') / nullif(gd(c),0), mt), 10) || ' bytes per request' ;
when mn = 'physical write total IO requests' then ret := lpad( tptformat(gd(c, 'STAT', 'physical write total bytes') / nullif(gd(c),0), mt), 10) || ' bytes per request' ;
when mn = 'physical read IO requests' then ret := lpad( tptformat(gd(c, 'STAT', 'physical read bytes') / nullif(gd(c),0), mt), 10) || ' bytes per request' ;
when mn = 'physical read total IO requests' then ret := lpad( tptformat(gd(c, 'STAT', 'physical read total bytes') / nullif(gd(c),0), mt), 10) || ' bytes per request' ;
when mn = 'physical write total multi block requests' then ret:= lpad( tptformat(gd(c, 'STAT', 'physical write total IO requests') - gd(c), mt), 10) || ' total single block write requests' ;
when mn = 'physical read total multi block requests' then ret := lpad( tptformat(gd(c, 'STAT', 'physical read total IO requests') - gd(c), mt), 10) || ' total single block read requests' ;
when mn = 'physical read IO requests' then ret := lpad( tptformat(gd(c, 'STAT', 'physical read bytes' ) / nullif(gd(c),0), mt), 10) || ' bytes per request' ;
when mn = 'physical read read IO requests' then ret := lpad( tptformat(gd(c, 'STAT', 'physical read total bytes' ) / nullif(gd(c),0), mt), 10) || ' bytes per request' ;
when mn = 'bytes sent via SQL*Net to client' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'SQL*Net roundtrips to/from client'),0), mt), 10) || ' bytes per roundtrip' ;
when mn = 'bytes received via SQL*Net from client' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'SQL*Net roundtrips to/from client'),0), mt), 10) || ' bytes per roundtrip' ;
when mn = 'bytes sent via SQL*Net to dblink' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'SQL*Net roundtrips to/from dblink'),0), mt), 10) || ' bytes per roundtrip' ;
when mn = 'bytes received via SQL*Net from dblink' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'SQL*Net roundtrips to/from dblink'),0), mt), 10) || ' bytes per roundtrip' ;
when mn = 'redo size' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'user commits' ),0), mt), 10) || ' bytes per user commit';
when mn = 'execute count' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'parse count (total)' ),0), mt), 10) || ' executions per parse';
when mn = 'parse count (total)' then ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'parse count (hard)' ),0), mt), 10) || ' softparses per hardparse';
when mn = 'session cursor cache hits' then ret := lpad( tptformat(gd(c) - (gd(c, 'STAT', 'parse count (total)' ) ), mt), 10) || ' softparses avoided thanks to cursor cache';
when mn = 'session logical reads' then ret := lpad( tptformat(gd(c) + (gd(c, 'STAT', 'buffer is pinned count' ) ), mt), 10) || ' total buffer visits';
when mn = 'buffer is pinned count' then ret := lpad( tptformat(gd(c) / nullif(gd(c) + gd(c, 'STAT', 'session logical reads'),0) * 100, mt), 10) || ' % buffer gets avoided thanks to buffer pin caching';
else ret := lpad( tptformat(gd(c) / nullif(gd(c, 'STAT', 'execute count'),0), mt), 10) || ' per execution' ;
end case; -- mt=stat, mn
when mt = 'TIME' then
-- this is ugly and wrong at the moment - will refactor some day
case
when mn = 'DB time' or mn= 'background elapsed time' then ret := lpad(tptformat((get_seconds(d2 - d1)*1000000 - (
gd(c)
/*+ gd(c, 'DB CPU', 'TIME') */
+ gd(c, 'WAIT', 'VKTM Logical Idle Wait')
+ gd(c, 'WAIT', 'VKTM Init Wait for GSGA')
+ gd(c, 'WAIT', 'IORM Scheduler Slave Idle Wait')
+ gd(c, 'WAIT', 'rdbms ipc message')
+ gd(c, 'WAIT', 'i/o slave wait')
+ gd(c, 'WAIT', 'OFS Receive Queue')
+ gd(c, 'WAIT', 'OFS idle')
+ gd(c, 'WAIT', 'VKRM Idle')
+ gd(c, 'WAIT', 'wait for unread message on broadcast channel')
+ gd(c, 'WAIT', 'wait for unread message on multiple broadcast channels')
+ gd(c, 'WAIT', 'class slave wait')
+ gd(c, 'WAIT', 'RMA: IPC0 completion sync')
+ gd(c, 'WAIT', 'PING')
+ gd(c, 'WAIT', 'watchdog main loop')
+ gd(c, 'WAIT', 'process in prespawned state')
+ gd(c, 'WAIT', 'pmon timer')
+ gd(c, 'WAIT', 'pman timer')
+ gd(c, 'WAIT', 'DNFS disp IO slave idle')
+ gd(c, 'WAIT', 'DIAG idle wait')
+ gd(c, 'WAIT', 'ges remote message')
+ gd(c, 'WAIT', 'SCM slave idle')
+ gd(c, 'WAIT', 'LMS CR slave timer')
+ gd(c, 'WAIT', 'gcs remote message')
+ gd(c, 'WAIT', 'gcs yield cpu')
+ gd(c, 'WAIT', 'heartbeat monitor sleep')
+ gd(c, 'WAIT', 'GCR sleep')
+ gd(c, 'WAIT', 'SGA: MMAN sleep for component shrink')
+ gd(c, 'WAIT', 'DBWR timer')
+ gd(c, 'WAIT', 'Data Guard: Gap Manager')
+ gd(c, 'WAIT', 'Data Guard: controlfile update')
+ gd(c, 'WAIT', 'MRP redo arrival')
+ gd(c, 'WAIT', 'Data Guard: Timer')
+ gd(c, 'WAIT', 'LNS ASYNC archive log')
+ gd(c, 'WAIT', 'LNS ASYNC dest activation')
+ gd(c, 'WAIT', 'LNS ASYNC end of log')
+ gd(c, 'WAIT', 'simulated log write delay')
+ gd(c, 'WAIT', 'heartbeat redo informer')
+ gd(c, 'WAIT', 'LGWR real time apply sync')
+ gd(c, 'WAIT', 'LGWR worker group idle')
+ gd(c, 'WAIT', 'parallel recovery slave idle wait')
+ gd(c, 'WAIT', 'Backup Appliance waiting for work')
+ gd(c, 'WAIT', 'Backup Appliance waiting restore start')
+ gd(c, 'WAIT', 'Backup Appliance Surrogate wait')
+ gd(c, 'WAIT', 'Backup Appliance Servlet wait')
+ gd(c, 'WAIT', 'Backup Appliance Comm SGA setup wait')
+ gd(c, 'WAIT', 'LogMiner builder: idle')
+ gd(c, 'WAIT', 'LogMiner builder: branch')
+ gd(c, 'WAIT', 'LogMiner preparer: idle')
+ gd(c, 'WAIT', 'LogMiner reader: log (idle)')
+ gd(c, 'WAIT', 'LogMiner reader: redo (idle)')
+ gd(c, 'WAIT', 'LogMiner merger: idle')
+ gd(c, 'WAIT', 'LogMiner client: transaction')
+ gd(c, 'WAIT', 'LogMiner: other')
+ gd(c, 'WAIT', 'LogMiner: activate')
+ gd(c, 'WAIT', 'LogMiner: reset')
+ gd(c, 'WAIT', 'LogMiner: find session')
+ gd(c, 'WAIT', 'LogMiner: internal')
+ gd(c, 'WAIT', 'Logical Standby Apply Delay')
+ gd(c, 'WAIT', 'parallel recovery coordinator waits for slave cleanup')
+ gd(c, 'WAIT', 'parallel recovery coordinator idle wait')
+ gd(c, 'WAIT', 'parallel recovery control message reply')
+ gd(c, 'WAIT', 'parallel recovery slave next change')
+ gd(c, 'WAIT', 'nologging fetch slave idle')
+ gd(c, 'WAIT', 'recovery sender idle')
+ gd(c, 'WAIT', 'recovery receiver idle')
+ gd(c, 'WAIT', 'recovery coordinator idle')
+ gd(c, 'WAIT', 'recovery logmerger idle')
+ gd(c, 'WAIT', 'block compare coord process idle')
+ gd(c, 'WAIT', 'PX Deq: Txn Recovery Start')
+ gd(c, 'WAIT', 'PX Deq: Txn Recovery Reply')
+ gd(c, 'WAIT', 'fbar timer')
+ gd(c, 'WAIT', 'smon timer')
+ gd(c, 'WAIT', 'PX Deq: Metadata Update')
+ gd(c, 'WAIT', 'Space Manager: slave idle wait')
+ gd(c, 'WAIT', 'PX Deq: Index Merge Reply')
+ gd(c, 'WAIT', 'PX Deq: Index Merge Execute')
+ gd(c, 'WAIT', 'PX Deq: Index Merge Close')
+ gd(c, 'WAIT', 'PX Deq: kdcph_mai')
+ gd(c, 'WAIT', 'PX Deq: kdcphc_ack')
+ gd(c, 'WAIT', 'imco timer')
+ gd(c, 'WAIT', 'IMFS defer writes scheduler')
+ gd(c, 'WAIT', 'memoptimize write drain idle')
+ gd(c, 'WAIT', 'virtual circuit next request')
+ gd(c, 'WAIT', 'shared server idle wait')
+ gd(c, 'WAIT', 'dispatcher timer')
+ gd(c, 'WAIT', 'cmon timer')
+ gd(c, 'WAIT', 'pool server timer')
+ gd(c, 'WAIT', 'lreg timer')
+ gd(c, 'WAIT', 'JOX Jit Process Sleep')
+ gd(c, 'WAIT', 'jobq slave wait')
+ gd(c, 'WAIT', 'pipe get')
+ gd(c, 'WAIT', 'PX Deque wait')
+ gd(c, 'WAIT', 'PX Idle Wait')
+ gd(c, 'WAIT', 'PX Deq Credit: need buffer')
+ gd(c, 'WAIT', 'PX Deq Credit: send blkd')
+ gd(c, 'WAIT', 'PX Deq: Msg Fragment')
+ gd(c, 'WAIT', 'PX Deq: Parse Reply')
+ gd(c, 'WAIT', 'PX Deq: Execute Reply')
+ gd(c, 'WAIT', 'PX Deq: Execution Msg')
+ gd(c, 'WAIT', 'PX Deq: Table Q Normal')
+ gd(c, 'WAIT', 'PX Deq: Table Q Sample')
+ gd(c, 'WAIT', 'REPL Apply: txns')
+ gd(c, 'WAIT', 'REPL Capture/Apply: messages')