Seed for simultaneos executions

angoca · Oct 6, 2014 · 26f454d · 26f454d
1 parent 2e1b1ef
commit 26f454d
Showing 1 changed file with 7 additions and 5 deletions.
diff --git a/src/main/sql-pl/04-Body.sql b/src/main/sql-pl/04-Body.sql
@@ -820,6 +820,7 @@ ALTER MODULE DB2UNIT publish
   DECLARE IGNORED DOUBLE;
   DECLARE RET ANCHOR EXECUTIONS.EXECUTION_ID;
   DECLARE RETRY BOOLEAN DEFAULT TRUE;
+  DECLARE APP_ID BIGINT;
 
   DECLARE LOGGER_ID SMALLINT;
 
@@ -828,12 +829,13 @@ ALTER MODULE DB2UNIT publish
 
   IF (SEED IS NULL) THEN
    SET TIME = CURRENT_TIMESTAMP;
-   SET SEED = (BIGINT(MINUTE(TIME)) * 60 + SECOND(TIME)) * 1000000
-      + MICROSECOND(time);
-   -- Next line does not work in DB2 9.7, however this prevents the problem
-   -- of concurrent simultaneous execution.
-   --SET SEED = BIGINT(MON_GET_APPLICATION_HANDLE() * 10000000000) + SEED;
+   SET APP_ID = (SELECT APPLICATION_HANDLE
+     FROM SYSIBMADM.MON_CONNECTION_SUMMARY
+     WHERE APPLICATION_ID = APPLICATION_ID());
+   SET SEED = (BIGINT((APP_ID * 10000000000 + MINUTE(TIME)) * 60
+      + SECOND(TIME) * 1000000 + MICROSECOND(time)));
    SET IGNORED = RAND(INTEGER(MOD(SEED, 2147483648)));
+   CALL LOGGER.DEBUG(LOGGER_ID, 'seed' || SEED);
   END IF;
 
   WHILE (RETRY = TRUE) DO