yes,and there is an offical tool to safely clean them:
http://www.postgresql.org/docs/9.1/static/pgarchivecleanup.html
在 2013-1-3 下午9:16，"Viktor" <viktor@xxxxxxxxxxxx>写道：
Hello,
I have running postgresql maste-slave replication with activated archiving-mode on the master.
Question: is it safe to clean older archived logs or it may corrupt the slave replication ? And what is the best way to clean them (by making snapshots)?
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Regards.
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