Backup of postgres

On Wed, 19 Aug 1998, Przemyslaw Bak wrote:

Hi all,

I have following script to backup database:
--------- cut ----------
#!/bin/sh

PSQL=/usr/local/pgsql/bin/psql
DUMP=/usr/local/pgsql/bin/pg_dump
PREFIX=`date +%j`
BACKUP_DIR=/usr/local/pgsql/data/base/.BACKUP

Databases=`$PSQL -tq -d template1 -c "select datname from pg_database"`
renice 20 $$

echo Backup started ...
for db in `echo $Databases`
do

echo "time: `date +%H%M%S` - Backup of $db in progress ..."
$DUMP -D $db > /$BACKUP_DIR/$PREFIX.$db
echo "time: `date +%H%M%S` - Backup of $db finnished ..."
done
echo Backup finnished ...
--------- cut ----------

Crontab runs it every night (4:00am - nobody is working on the machine).
But every run I have following message:

---------- cut -------------
From: Cron Daemon <root@shire.st3.makro.com.pl>
To: postgres@shire.st3.makro.com.pl
Subject: Cron <postgres@shire> /usr/local/pgsql/store3/Backup.sh

3986: old priority 0, new priority 20
Backup started ...
time: 040001 - Backup of template1 in progress ...
time: 040004 - Backup of template1 finnished ...
time: 040004 - Backup of mzo in progress ...
time: 040010 - Backup of mzo finnished ...
time: 040010 - Backup of store3 in progress ...
/usr/local/pgsql/store3/Backup.sh: line 19: 4002 Segmentation fault $DUMP -D $db >/$BACKUP_DIR/$PREFIX.$db
time: 042021 - Backup of store3 finnished ...
Backup finnished ...
---------- cut -------------

What's wrong with this script ?
It is running on Linux 2.0.33, Pentium 200, 64MB.
Please help - we save in postgres huge number of data.

przemol

What version of postgresql are you running? I can't recall whether
it was in 6.2 or 6.1 (I think 6.2), but one of those versions
contained a pg_dump that would seg fault on some databases.

Marc Zuckman
marc@fallon.classyad.com

_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
_ Visit The Home and Condo MarketPlace _
_ http://www.ClassyAd.com _
_ _
_ FREE basic property listings/advertisements and searches. _
_ _
_ Try our premium, yet inexpensive services for a real _
_ selling or buying edge! _
_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

On Wed, 19 Aug 1998, Marc Howard Zuckman wrote:

On Wed, 19 Aug 1998, Przemyslaw Bak wrote:

Hi all,

I have following script to backup database:
--------- cut ----------
#!/bin/sh

PSQL=/usr/local/pgsql/bin/psql
DUMP=/usr/local/pgsql/bin/pg_dump
PREFIX=`date +%j`
BACKUP_DIR=/usr/local/pgsql/data/base/.BACKUP

Databases=`$PSQL -tq -d template1 -c "select datname from pg_database"`
renice 20 $$

echo Backup started ...
for db in `echo $Databases`
do

echo "time: `date +%H%M%S` - Backup of $db in progress ..."
$DUMP -D $db > /$BACKUP_DIR/$PREFIX.$db
echo "time: `date +%H%M%S` - Backup of $db finnished ..."
done
echo Backup finnished ...
--------- cut ----------

Crontab runs it every night (4:00am - nobody is working on the machine).
But every run I have following message:

---------- cut -------------
From: Cron Daemon <root@shire.st3.makro.com.pl>
To: postgres@shire.st3.makro.com.pl
Subject: Cron <postgres@shire> /usr/local/pgsql/store3/Backup.sh

3986: old priority 0, new priority 20
Backup started ...
time: 040001 - Backup of template1 in progress ...
time: 040004 - Backup of template1 finnished ...
time: 040004 - Backup of mzo in progress ...
time: 040010 - Backup of mzo finnished ...
time: 040010 - Backup of store3 in progress ...
/usr/local/pgsql/store3/Backup.sh: line 19: 4002 Segmentation fault $DUMP -D $db >/$BACKUP_DIR/$PREFIX.$db
time: 042021 - Backup of store3 finnished ...
Backup finnished ...
---------- cut -------------

What's wrong with this script ?
It is running on Linux 2.0.33, Pentium 200, 64MB.
Please help - we save in postgres huge number of data.

przemol

What version of postgresql are you running? I can't recall whether
it was in 6.2 or 6.1 (I think 6.2), but one of those versions
contained a pg_dump that would seg fault on some databases.

Postgres 6.3.2. I compiled it from sources.

przemol