ORACLE

Product detail

• Product by edition and additional products(jp)
  • https://docs.oracle.com/cd/E16338_01/license.112/b56284/editions.htm#CJACGHEB

Backup and Restore

• Cumulate differential backup and restore(jp)
  • https://www.atmarkit.co.jp/ait/articles/0611/02/news126_2.html
  • https://www.oracle.com/technetwork/jp/database/articles/kusakabe/kusakabe-8-5172663-ja.html
• Oracle stream(replication) official documentation
  • https://docs.oracle.com/cd/E16338_01/server.112/b61351/toc.htm
• Oracle stream (jp)
  • https://blogs.oracle.com/supportjp/oracle-database-oracle-streams

Useful SQL

• all table size
  • https://www.zanmai.net/blog/data/252.html

SELECT 
      a.table_name
      ,a.num_rows
      , b.MB
FROM all_tables a
      , (Select Segment_Name,Sum(bytes)/1024/1024 MB From all_segments Group By Segment_Name) b
WHERE a.table_name = b.Segment_Name
ORDER BY a.num_rows desc, b.MB desc;

• Update Join

  • http://www.mitene.or.jp/~rnk/TIPS_ORCL_UPDATE.htm
  • https://codeday.me/jp/qa/20190309/382305.html
    • 11g Versionでは使えなかった。

• Tablespace management

  • official tablespace management
    • https://docs.oracle.com/cd/E57425_01/121/ADMIN/tspaces.htm#GUID-FB734C25-BA3A-45E8-BDCE-77C668140B67
  • https://doracle.tistory.com/48
    • tablespace auto resize, manual resize
  • http://kaludin.egloos.com/v/2919398

• Table/View/Procedure/Function structure

  • https://devlights.hatenablog.com/entry/20091005/p1
  • user_tables -> all_tables のようにuserをallに変えたら異なるユーザーが作成したリソースが確認できる。

• Ranking

  • https://sql-oracle.com/?p=1246

SELECT stu_no,activity,score,
 RANK() OVER (ORDER BY score) score_rank
FROM student
ORDER BY score_rank;