autovacuum default run with vacuum_index_cleanup and vacuum_truncate and related lock?

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Hi,

It’s Postgres 13 version, we plan to migrate from Oracle to Postgres 13 on RHEL8.  One maintain job is about autovacuum, with default config,  autovacuum will do on tables with  “vacuum_index_cleanup” and “vacuum_truncate” option?   With both options, autovacuum woker will hold “access exclusive” lock when truncate empty blocks and cleanup index ?  if that’s true, how to handle autovacuum to reduce the lock blocking issue?

 

Thanks,

 

James


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