Backup and restore postgreSQL

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От Bayan M. Almuqhim
Тема Backup and restore postgreSQL
Дата
Msg-id 0EB54111E5F012439259BE380257F5D98F2388@ex-itu01-002
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Ответы Re: Backup and restore postgreSQL
Список pgsql-admin
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Dear all,


I have 8.4 postgreSQL on Ubuntu 11.10 and I would like to upgrade my server to Ubuntu 12.04 and use 9.1 postgreSQL. 
I have Slony-| replication cluster in my database, also there is a table with many partitions.

In order to do that, I started by backing up my database and restore it in a test server (Ubuntu 12.04, 9.1 postgreSQL) to make sure that I can get back the data if something wrong happened. My database have geometry data, so I enabled postgis on it.

I tried pg_dump and pg_dumpall to do the backup, then restore it but neither ways worked for me in the restore process ! 
pg_dump: sudo pg_dump -i -U postgres mydb | gzip > /$path/database-backup.gz
and restore it with: sudo gunzip -c /$path/database-backup.gz | psql mydb -U postgres


pg_dumpall: sudo pg_dumpall -U postgres | gzip -c > mybackup.sql.gz
and restore it: sudo gunzip -c mybackup.sql.gz | psql -U postgres


The tables were restored but with no data inside them, and I got "out of memory error" and the restore process stops.
Here is the error that I encounter with my restore (in terminal):

--------------------------
.
.
.
invalid command \N
invalid command \N
invalid command \N
invalid command \N
invalid command \.
ERROR:  syntax error at or near "1"
LINE 1: 1 $someNumbers 2013-02-26 04:52:27.410494 $someNumbers $someNumbers  ...
        ^
invalid command \.
ERROR:  syntax error at or near "2"
LINE 1: 2 2 1
        ^
invalid command \.
ERROR:  syntax error at or near "1"
LINE 1: 1 $someNumbers $someNumbers $someNumbers D "ColName"='VALUE' and "Col"='VAlue...
        ^
out of memory
-----------------------


Is that syntax error means there is a real error in my data which cause failure to the restore process?
I learned that system generated date\time may stored in the database in the format "2013-02-26 04:52:27.410494" which will cause error in 
backup and restore processes, is that correct? although I searched my database for that specific date and couldn't find it in any table !

If those were not the problems, would you help me to identify and solve the problem? Is there special configuration I should do to the new Serve/Database in order to restore the data in it correctly ? 
Or is there a better way to do the backup and restore to my database?


Thank you and best regards,
Bayan Almuqhim

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