Thank you, Kevin, for the tip.
It appears nobody is waiting for a lock (all current locks are granted):
chemaxon=# select
pg_class.relname,pg_locks.pid,pg_locks.mode,pg_locks.granted from
pg_class,pg_locks where pg_class.relfilenode=pg_locks.relation order
by pg_locks.pid;
relname | pid | mode | granted
----------------------------------------+-------+------------------+---------
pg_class | 14735 | AccessShareLock | t
pg_class_oid_index | 14735 | AccessShareLock | t
prop_table_speedtest | 14735 | AccessShareLock | t
struc_table_speedtest_pkey | 14735 | AccessShareLock | t
struc_table_speedtest_pkey | 14735 | RowExclusiveLock | t
struc_table_speedtest_cd_id_seq | 14735 | AccessShareLock | t
struc_table_speedtest_fx | 14735 | AccessShareLock | t
pg_namespace_oid_index | 14735 | AccessShareLock | t
struc_table_speedtest_ul | 14735 | RowExclusiveLock | t
pg_namespace_nspname_index | 14735 | AccessShareLock | t
pg_class_relname_nsp_index | 14735 | AccessShareLock | t
struc_table_speedtest | 14735 | AccessShareLock | t
struc_table_speedtest | 14735 | RowExclusiveLock | t
struc_table_speedtest_fx | 14735 | RowExclusiveLock | t
struc_table_speedtest_hx | 14735 | AccessShareLock | t
struc_table_speedtest_hx | 14735 | RowExclusiveLock | t
prop_table_speedtest_pkey | 14735 | AccessShareLock | t
struc_table_speedtest_ul_update_id_seq | 14735 | AccessShareLock | t
pg_namespace | 14735 | AccessShareLock | t
struc_table_speedtest | 14737 | RowExclusiveLock | t
struc_table_speedtest | 14737 | ExclusiveLock | t
struc_table_speedtest_fx | 14737 | RowExclusiveLock | t
struc_table_speedtest_pkey | 14737 | RowExclusiveLock | t
struc_table_speedtest_hx | 14737 | RowExclusiveLock | t
pg_class_relname_nsp_index | 15488 | AccessShareLock | t
pg_class | 15488 | AccessShareLock | t
pg_class_oid_index | 15488 | AccessShareLock | t
pg_locks | 15488 | AccessShareLock | t
(28 rows)
Any more ideas?
Thanks
Peter
2009/4/9 Kevin Grittner <Kevin.Grittner@xxxxxxxxxxxx>:
> Péter Kovács <maxottovonstirlitz@xxxxxxxxx> wrote:
>> postgres 14727 9868 0 22:34 ? 00:00:00 postgres: pkovacs
>> chemaxon 127.0.0.1(12496) idle in transaction
>> postgres 14735 9868 0 22:34 ? 00:00:00 postgres: pkovacs
>> chemaxon 127.0.0.1(12497) idle in transaction
>> postgres 14737 9868 0 22:34 ? 00:00:00 postgres: pkovacs
>> chemaxon 127.0.0.1(12498) UPDATE waiting
>
> I would start by looking at pg_locks to see if your update is blocked
> by one of the connections which is idle in a transaction. Any locks
> won't be released until the idle transaction commits or rolls back.
> Then look at pg_stat_activity to check timestamps. Be sure your
> software doesn't have any code path which leaves things dangling.
> (Since you seem to be using Java, I recommend proper use of
> try/finally blocks to ensure resources are released.)
>
> -Kevi
>
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