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Failing to recover after panic shutdown

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Title: Failing to recover after panic shutdown

Hi

I am running Postgres 8.2 on Windows 2003 server SP2.

Every now and then (2-3 times a year) our Postgres service is down and we need to manually start it. This is what we find:

In log when going down:

2008-06-02 13:40:02 PANIC:  could not open file "pg_xlog/000000010000001C00000081" (log file 28, segment 129): Invalid argument

This application has requested the Runtime to terminate it in an unusual way.

Please contact the application's support team for more information.

2008-06-02 13:40:02 LOG:  server process (PID 5792) exited with exit code 3

2008-06-02 13:40:02 LOG:  terminating any other active server processes

2008-06-02 13:40:02 WARNING:  terminating connection because of crash of another server process

2008-06-02 13:40:02 DETAIL:  The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.

2008-06-02 13:40:02 HINT:  In a moment you should be able to reconnect to the database and repeat your command.

(WARNING, DETAIL and HINT is repeated a few times)

2008-06-02 13:40:02 LOG:  all server processes terminated; reinitializing

2008-06-02 13:40:02 LOG:  database system was interrupted at 2008-06-02 13:39:39 W. Europe Daylight Time

2008-06-02 13:40:02 LOG:  checkpoint record is at 1C/80F646B0

2008-06-02 13:40:02 LOG:  redo record is at 1C/80F646B0; undo record is at 0/0; shutdown FALSE

2008-06-02 13:40:02 LOG:  next transaction ID: 0/316291661; next OID: 44447343

2008-06-02 13:40:02 LOG:  next MultiXactId: 1929; next MultiXactOffset: 4093

2008-06-02 13:40:02 LOG:  database system was not properly shut down; automatic recovery in progress

2008-06-02 13:40:02 LOG:  redo starts at 1C/80F64700

2008-06-02 13:40:02 LOG:  unexpected pageaddr 1C/79000000 in log file 28, segment 129, offset 0

2008-06-02 13:40:02 LOG:  redo done at 1C/80FFD6E0

2008-06-02 13:40:02 FATAL:  the database system is starting up

2008-06-02 13:40:03 FATAL:  the database system is starting up

2008-06-02 13:40:03 FATAL:  the database system is starting up

2008-06-02 13:40:03 FATAL:  the database system is starting up

2008-06-02 13:40:03 FATAL:  could not open file "pg_xlog/000000010000001C00000081" (log file 28, segment 129): Invalid argument

2008-06-02 13:40:03 FATAL:  the database system is starting up

2008-06-02 13:40:03 LOG:  startup process (PID 4420) exited with exit code 1

2008-06-02 13:40:03 LOG:  aborting startup due to startup process failure

2008-06-02 13:40:05 LOG:  archived transaction log file "000000010000001C00000080"

2008-06-02 13:40:05 LOG:  logger shutting down

In log when manually started:

2008-06-02 13:50:34 LOG:  database system was shut down at 2008-06-02 13:40:03 W. Europe Daylight Time

2008-06-02 13:50:34 LOG:  checkpoint record is at 1C/80FFE990

2008-06-02 13:50:34 LOG:  redo record is at 1C/80FFE990; undo record is at 0/0; shutdown TRUE

2008-06-02 13:50:34 LOG:  next transaction ID: 0/316292191; next OID: 44447343

2008-06-02 13:50:34 LOG:  next MultiXactId: 1929; next MultiXactOffset: 4093

2008-06-02 13:50:34 LOG:  database system is ready

2008-06-02 13:50:35 LOG:  archived transaction log file "000000010000001C00000080"

2008-06-02 13:50:54 LOG:  archived transaction log file "000000010000001C00000080"

We are archiving WAL-segments at a remote machine, and we are copying non-filled WAL-segments every 10 minutes to be able to rebuild the DB with a maximum of 10 minutes of missing data. (I dont know if that has anything to do with it).

Does anyone have a clue on what the problem could be?

Vennlig hilsen

Per Lauvås
Systemutvikler

Fax: +47 22 41 60 61
Direct: +47 24 15 55 51
Mintra as
Storgata 1
P.O. Box 8945 Youngstorget
N-0028 Oslo
Tel: +47 24 15 55 00
Fax: +47 22 41 60 61
http://www.mintra.no

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