WaitOnLock

Started by Nonameover 25 years ago2 messages
#1Noname
darcy@druid.net

A client just got this error. Anyone know why I suddenly get this?
The program has been working flawlessly for months before this.

WaitOnLock: error on wakeup - Aborting this transaction

-- 
D'Arcy J.M. Cain <darcy@{druid|vex}.net>   |  Democracy is three wolves
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#2Tom Lane
tgl@sss.pgh.pa.us
In reply to: Noname (#1)
Re: WaitOnLock

darcy@druid.net (D'Arcy J.M. Cain) writes:

WaitOnLock: error on wakeup - Aborting this transaction

What happens to NOTICEs in your application?

For some odd reason, deadlock reports come out as a NOTICE followed by
this error message; if you are bit-bucketing NOTICEs then you may well
be confused.

Window 1:

regression=# begin;
BEGIN
regression=# lock int4_tbl;
LOCK TABLE

Window 2:

regression=# begin;
BEGIN
regression=# lock int8_tbl;
LOCK TABLE
regression=# lock int4_tbl;
<< waits >>

Window 1:

regression=# lock int8_tbl;
NOTICE: Deadlock detected -- See the lock(l) manual page for a possible cause.
ERROR: WaitOnLock: error on wakeup - Aborting this transaction

regards, tom lane