Обсуждение: Determine which query prevents applying WALs on standby
Is there a way to detect which query (or queries) on hot standby holds streaming replication? Looked into the sources and found out that function ResolveRecoveryConflictWithVirtualXIDs do that job but have no idea how to do that with SQL. -- With best regards, Andrey Zhidenkov.
Andrey Zhidenkov <andrey.zhidenkov@gmail.com> writes: > Is there a way to detect which query (or queries) on hot standby holds > streaming replication? Looked into the sources and found out that > function ResolveRecoveryConflictWithVirtualXIDs do that job but have > no idea how to do that with SQL. The pg_locks view on your standby should reveal something. > > -- > With best regards, Andrey Zhidenkov. > > -- Jerry Sievers Postgres DBA/Development Consulting e: postgres.consulting@comcast.net p: 312.241.7800
Hi team, Would please remove me from it. Beat Regard, Zhenyu Xu -----邮件原件----- 发件人: Jerry Sievers <gsievers19@comcast.net> 发送时间: Thursday, September 6, 2018 23:35 收件人: Andrey Zhidenkov <andrey.zhidenkov@gmail.com> 抄送: pgsql-admin@postgresql.org 主题: Re: Determine which query prevents applying WALs on standby Andrey Zhidenkov <andrey.zhidenkov@gmail.com> writes: > Is there a way to detect which query (or queries) on hot standby holds > streaming replication? Looked into the sources and found out that > function ResolveRecoveryConflictWithVirtualXIDs do that job but have > no idea how to do that with SQL. The pg_locks view on your standby should reveal something. > > -- > With best regards, Andrey Zhidenkov. > > -- Jerry Sievers Postgres DBA/Development Consulting e: postgres.consulting@comcast.net p: 312.241.7800