Thread: PostgreSQL hanging

I am runing PG 8.1.4/Windows.
Over the weekend, I have had to restart the PostgreSQL service a couple
of times after PG hangs.
At the time this happens, the log is showing entries such as the one
below

2006-07-31 09:19:55 LOG:  could not rename file
"pg_xlog/0000000100000208000000E1" to
"pg_xlog/0000000100000208000000F4", continuing to try

Any ideas what may be causing this?

My database is currently 7.7 GB.
I have 54GB of drive space available, so it is not being caused by lack
of disk space.

My autovacuum parameters are as follows:

#-----------------------------------------------------------------------
----
# AUTOVACUUM PARAMETERS
#-----------------------------------------------------------------------
----

autovacuum = on            # enable autovacuum subprocess?
autovacuum_naptime = 20        # time between autovacuum runs, in secs
autovacuum_vacuum_threshold = 100    # min # of tuple updates before
                    # vacuum
autovacuum_analyze_threshold = 100    # min # of tuple updates before
                    # analyze
autovacuum_vacuum_scale_factor = 0.1    # fraction of rel size before
                    # vacuum
autovacuum_analyze_scale_factor = 0.1    # fraction of rel size before
                    # analyze
autovacuum_vacuum_cost_delay = 100    # default vacuum cost delay for
                    # autovac, -1 means use
                    # vacuum_cost_delay
autovacuum_vacuum_cost_limit = 100    # default vacuum cost limit for
                    # autovac, -1 means use
                    # vacuum_cost_limit


Any suggestions will be appreciated.

Do you have any antivirus running on your system? if so, try disabling that.

This problem can occur if some other process is holding a lock on that specific file and so as a result not able to rename the file.

Thanks,
--
Shoaib Mir
EnterpriseDB (www.enterprisedb.com)

---

From: Shoaib Mir [mailto:shoaibmir@gmail.com]
Sent: Monday, July 31, 2006 11:58 AM
To: Benjamin Krajmalnik
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] PostgreSQL hanging

Do you have any antivirus running on your system? if so, try disabling that.

This problem can occur if some other process is holding a lock on that specific file and so as a result not able to rename the file.

Thanks,
--
Shoaib Mir
EnterpriseDB (www.enterprisedb.com)

Hi,

Try to run  a vaccum scripts in the db.

Thanks & Regards
Dilipkumar
----- Original Message -----
From: "Benjamin Krajmalnik" <kraj@illumen.com>
To: <pgsql-admin@postgresql.org>
Sent: Monday, July 31, 2006 10:04 PM
Subject: [ADMIN] PostgreSQL hanging


I am runing PG 8.1.4/Windows.
Over the weekend, I have had to restart the PostgreSQL service a couple
of times after PG hangs.
At the time this happens, the log is showing entries such as the one
below

2006-07-31 09:19:55 LOG:  could not rename file
"pg_xlog/0000000100000208000000E1" to
"pg_xlog/0000000100000208000000F4", continuing to try

Any ideas what may be causing this?

My database is currently 7.7 GB.
I have 54GB of drive space available, so it is not being caused by lack
of disk space.

My autovacuum parameters are as follows:

#-----------------------------------------------------------------------
----
# AUTOVACUUM PARAMETERS
#-----------------------------------------------------------------------
----

autovacuum = on # enable autovacuum subprocess?
autovacuum_naptime = 20 # time between autovacuum runs, in secs
autovacuum_vacuum_threshold = 100 # min # of tuple updates before
# vacuum
autovacuum_analyze_threshold = 100 # min # of tuple updates before
# analyze
autovacuum_vacuum_scale_factor = 0.1 # fraction of rel size before
# vacuum
autovacuum_analyze_scale_factor = 0.1 # fraction of rel size before
# analyze
autovacuum_vacuum_cost_delay = 100 # default vacuum cost delay for
# autovac, -1 means use
# vacuum_cost_delay
autovacuum_vacuum_cost_limit = 100 # default vacuum cost limit for
# autovac, -1 means use
# vacuum_cost_limit


Any suggestions will be appreciated.

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