15 Nisan 2013 Pazartesi

DB HEALTH CHECK CONTROLS 3- MONTHLY


Monthly controls and actions according to controls provide healthy databases and management facilities. So i strongly recommend monthly control for all junior dba's becoming senior dba.

  1. Check the undo segment size for last month. You could find check undo tablespace size sql from metalink.
  2. Check max undo segment size for last month.
  3. Check the dba objects which are owned by schema accounts but created at SYSTEM or SYSAUX or USERS tablespace.
  4. Check the average connection count per user monthly
  5. Check the database size and compare it previous size
  6. Check tablespace status
  7. Check index and constraints status, contact the software developer for dropping disabled indexes or constraints
  8. Check the datafiles autoextensible and If they are auto extend then disable it.  
  9. Check the analyze objects or GATHER_STAT JOBS status ( at night)
  10. Check the default or temporary tablespace for each user

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