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When was my database started ?

  • Denish Patel
  • 5th May 2011
  • postgresql

In the database world, it’s fair to ask question to database that when have you started? In Oracle world, it can be easily find out by querying system level view V$INSTANCE. In PostgreSQL world, until today, I wasn’t able to answer that question without checking database log files. Today, I asked this question to OmniTi’s database operations irc channel and got answer in 20 minutes. I regret that I should have asked it earlier but anyways, now I know that in PostgreSQL it’s possible using this query.


omniti=# SELECT (pg_stat_file( 'postmaster.pid')).modification;
modification
------------------------
2010-08-13 15:37:14-04

If someone complains that database was restarted , it would be easy as DBA to query and verify it. I hope this query will be helpful to you during day-to-day operations!

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