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WAL configuration and REINDEX

From: Jose Manuel Garci­a Valladolid <garcia_josval(at)gva(dot)es>
To: pgsql-admin(at)postgresql(dot)org
Cc: Jose Alarcon <alarcon_jos(at)gva(dot)es>
Subject: WAL configuration and REINDEX
Date: 2006-09-21 10:40:55
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
Hello admins,

 I have a PostgreSQL 8.1.4 server under Linux Red Hat with several 
databases. The server is configured with WAL archiving turned on. As a 
maintenance process, every night one cron job launches a backup process 
to the server with
pg_dump, then the server shuts down and starts up and do a REINDEX 
DATABASE to all databases to keep all tables reindexed.

 After 30 days of no activity to the server (this is a DBA test server) 
the amount of WAL segments is increasing at very high speed. Every 
REINDEX process generates between 25 and 30 WAL segments. With this 
behavior (and no activity!!) I can not maintain this amount of data to 
performs future WAL backups and recovers.

 Any idea to decrease the number of WAL segments generated?
 Is possible to know when a table would be reindexed and to avoid dayly 
REINDEX process?

 Thank you.
 Jose Manuel García V.

Attachment: garcia_josval.vcf
Description: text/x-vcard (451 bytes)


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