I am having a problem where row exclusive locks are causing applications and vacuums to hang. I shutdown all applications, but the locks remain. I stop and start postgres, but the locks are still there. A pid is not listed. This problem started showing up after switching to the XA datasource with the Postgres JDBC driver. Is this causing problems?
psql nafis
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select pg_class.relname,pg_locks.* from pg_class,pg_locks where pg_class.relfilenode=pg_locks.relation;
SNIP:
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pid mode virtualtransaction granted locktype database relation
(null) AccessShareLock -1/309809 true relation 16384 29478
(null) AccessShareLock -1/309809 true relation 16384 29497
(null) AccessShareLock -1/317897 true relation 16384 29145
(null) RowShareLock -1/317897 true relation 16384 29239
(null) AccessShareLock -1/317897 true relation 16384 29136
(null) AccessShareLock -1/317931 true relation 16384 29647
(null) RowExclusiveLock -1/317931 true relation 16384 29647
(null) AccessShareLock -1/309809 true relation 16384 29494
(null) RowShareLock -1/317931 true relation 16384 29347
(null) RowShareLock -1/317931 true relation 16384 29225
(null) AccessShareLock -1/317931 true relation 16384 29147
(null) AccessShareLock -1/317931 true relation 16384 29392
(null) RowExclusiveLock -1/317931 true relation 16384 29392
(null) RowShareLock -1/317931 true relation 16384 29239
11209 AccessShareLock 3/7 true relation 16384 10969
(null) AccessShareLock -1/317931 true relation 16384 29136
(null) AccessShareLock -1/317931 true relation 16384 29145
(null) AccessShareLock -1/309809 true relation 16384 29446
(null) RowExclusiveLock -1/309809 true relation 16384 29446
11209 AccessShareLock 3/7 true relation 16384 2663
(null) AccessShareLock -1/309809 true relation 16384 29447
(null) RowExclusiveLock -1/309809 true relation 16384 29447
(null) AccessShareLock -1/309809 true relation 16384 29466
(null) AccessShareLock -1/317897 true relation 16384 29392
(null) RowExclusiveLock -1/317897 true relation 16384 29392
(null) RowShareLock -1/317897 true relation 16384 29225
(null) AccessShareLock -1/317897 true relation 16384 29147
(null) AccessShareLock -1/309809 true relation 16384 29582
