DH, > Our mail server has been suffering performance problems due to excessive > use of the local MySQL server in the various configurations. Looking over > the Amavisd-new configuration, I see that SQL Logging is enabled via: > @storage_sql_dsn = @lookup_sql_dsn; > The lookups are necessary, but as we don't use $*_quarantine_method='sql' > anywhere, and we aren't using the penpals feature, I would like to turn > the SQL logging off. Once I do that, I want to clean out the tables used > by SQL Logging. Based on README.sql.txt, I am led to believe that the > @storage_sql_dsn is the sole user of the following tables: > maddr > msgs > msgrcpt > quarantine
Right. > Currently the sizes of these tables are several hundred megs each (except > for quarantine, which is empty). My question is twofold: > First, I can just comment out or remove the @storage_sql_dsn line in > amavisd.conf in order to disable SQL Logging? Yes. > Second, will I cause any problems by deleting all the rows from the 4 > tables above? Are they used in any other way? No problems. Tables msgs, msgrcpt and maddr are pretty much write-only except for pen pals, which gets disabled along with turning off @storage_sql_dsn. The table 'quarantine' is normally write-only, except for releasing from a quarantine when @storage_sql_dsn is enabled and quarantine method points to 'sql:' . Even if @storage_sql_dsn is still enabled and writing goes on, you may be deleting records from these tables - which is how maintenance purging is normally done (README.sql). (with MySQL, purging is somewhat troublesome because of extensive locking, which can bog down amavisd; this is an order of magnitude less noticeable problem with database on PostgreSQL). Mark ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ AMaViS-user mailing list AMaViS-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amavis-user AMaViS-FAQ:http://www.amavis.org/amavis-faq.php3 AMaViS-HowTos:http://www.amavis.org/howto/
