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How to purge old files from pg_xlogs directory
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I have an archive command copying WAL files from pg_xlogs to my archive directory. However, I notice that the pg_xlogs directory is growing in size with (but is limiting itself to around 7 files). What controls this "7" value? Is there a risk it will grow to a huge number of files?
How do I limit the number of log files, or even better, limit to no more than 48 hours worth? I found a similarly titled question here but it doesn't really apply. I'm using PostgreSQL version 8.4.20 (so settings/commands from v9 won't apply)
Can I just create a cron job that deletes files from pg_xlogs older than 48 hours? Will this crash/corrupt the pgsql server? Is there a better way?
Can I use my archive_command to delete the source file after moving to my archive directory?
postgresql write-ahead-logging
asked Feb 10 '18 at 23:15
TSGTSG
1385
bumped to the homepage by Community♦ 5 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
I have an archive command copying WAL files from pg_xlogs to my archive directory. However, I notice that the pg_xlogs directory is growing in size with (but is limiting itself to around 7 files). What controls this "7" value? Is there a risk it will grow to a huge number of files?
How do I limit the number of log files, or even better, limit to no more than 48 hours worth? I found a similarly titled question here but it doesn't really apply. I'm using PostgreSQL version 8.4.20 (so settings/commands from v9 won't apply)
Can I just create a cron job that deletes files from pg_xlogs older than 48 hours? Will this crash/corrupt the pgsql server? Is there a better way?
Can I use my archive_command to delete the source file after moving to my archive directory?
postgresql write-ahead-logging
asked Feb 10 '18 at 23:15
TSGTSG
1385
bumped to the homepage by Community♦ 5 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
I have an archive command copying WAL files from pg_xlogs to my archive directory. However, I notice that the pg_xlogs directory is growing in size with (but is limiting itself to around 7 files). What controls this "7" value? Is there a risk it will grow to a huge number of files?
How do I limit the number of log files, or even better, limit to no more than 48 hours worth? I found a similarly titled question here but it doesn't really apply. I'm using PostgreSQL version 8.4.20 (so settings/commands from v9 won't apply)
Can I just create a cron job that deletes files from pg_xlogs older than 48 hours? Will this crash/corrupt the pgsql server? Is there a better way?
Can I use my archive_command to delete the source file after moving to my archive directory?
postgresql write-ahead-logging
asked Feb 10 '18 at 23:15
TSGTSG
1385
I have an archive command copying WAL files from pg_xlogs to my archive directory. However, I notice that the pg_xlogs directory is growing in size with (but is limiting itself to around 7 files). What controls this "7" value? Is there a risk it will grow to a huge number of files?
How do I limit the number of log files, or even better, limit to no more than 48 hours worth? I found a similarly titled question here but it doesn't really apply. I'm using PostgreSQL version 8.4.20 (so settings/commands from v9 won't apply)
Can I just create a cron job that deletes files from pg_xlogs older than 48 hours? Will this crash/corrupt the pgsql server? Is there a better way?
Can I use my archive_command to delete the source file after moving to my archive directory?
postgresql write-ahead-logging
postgresql write-ahead-logging
asked Feb 10 '18 at 23:15
TSGTSG
1385
asked Feb 10 '18 at 23:15
TSGTSG
1385
edited Feb 10 '18 at 23:22
TSG
asked Feb 10 '18 at 23:15
TSGTSG
1385
asked Feb 10 '18 at 23:15
TSGTSG
1385
asked Feb 10 '18 at 23:15
TSGTSG
1385
1385
bumped to the homepage by Community♦ 5 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 5 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
add a comment |
1 Answer
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Firstly PG 8.4 is no longer supported (since July 2014), you should move your databases to a supported version as soon as possible.
The WAL configuration settings for the 8.4 version are documented here:
https://www.postgresql.org/docs/8.4/static/runtime-config-wal.html
In particular checkpoint_segments control the number of WAL files.
You must not delete WAL files, either manually or with a cron job or with archive_command. This would definitely corrupt your database.
WAL files may grow in number if archive_command is not working or lagging behind.
answered Feb 12 '18 at 11:38
Daniel VéritéDaniel Vérité
17.9k33653
add a comment |
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Firstly PG 8.4 is no longer supported (since July 2014), you should move your databases to a supported version as soon as possible.
The WAL configuration settings for the 8.4 version are documented here:
https://www.postgresql.org/docs/8.4/static/runtime-config-wal.html
In particular checkpoint_segments control the number of WAL files.
You must not delete WAL files, either manually or with a cron job or with archive_command. This would definitely corrupt your database.
WAL files may grow in number if archive_command is not working or lagging behind.
answered Feb 12 '18 at 11:38
Daniel VéritéDaniel Vérité
17.9k33653
add a comment |
Firstly PG 8.4 is no longer supported (since July 2014), you should move your databases to a supported version as soon as possible.
The WAL configuration settings for the 8.4 version are documented here:
https://www.postgresql.org/docs/8.4/static/runtime-config-wal.html
In particular checkpoint_segments control the number of WAL files.
You must not delete WAL files, either manually or with a cron job or with archive_command. This would definitely corrupt your database.
WAL files may grow in number if archive_command is not working or lagging behind.
answered Feb 12 '18 at 11:38
Daniel VéritéDaniel Vérité
17.9k33653
add a comment |
Firstly PG 8.4 is no longer supported (since July 2014), you should move your databases to a supported version as soon as possible.
The WAL configuration settings for the 8.4 version are documented here:
https://www.postgresql.org/docs/8.4/static/runtime-config-wal.html
In particular checkpoint_segments control the number of WAL files.
You must not delete WAL files, either manually or with a cron job or with archive_command. This would definitely corrupt your database.
WAL files may grow in number if archive_command is not working or lagging behind.
answered Feb 12 '18 at 11:38
Daniel VéritéDaniel Vérité
17.9k33653
Firstly PG 8.4 is no longer supported (since July 2014), you should move your databases to a supported version as soon as possible.
The WAL configuration settings for the 8.4 version are documented here:
https://www.postgresql.org/docs/8.4/static/runtime-config-wal.html
In particular checkpoint_segments control the number of WAL files.
You must not delete WAL files, either manually or with a cron job or with archive_command. This would definitely corrupt your database.
WAL files may grow in number if archive_command is not working or lagging behind.
answered Feb 12 '18 at 11:38
Daniel VéritéDaniel Vérité
17.9k33653
answered Feb 12 '18 at 11:38
Daniel VéritéDaniel Vérité
17.9k33653
answered Feb 12 '18 at 11:38
Daniel VéritéDaniel Vérité
17.9k33653
answered Feb 12 '18 at 11:38
Daniel VéritéDaniel Vérité
17.9k33653
17.9k33653
add a comment |
add a comment |
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