take care to inclue a parameter in the copy command that will make sure the
archived WAL will not be overwritten
for your reference(on Linux)
"It is important that the archive command return zero exit status if and
only if it succeeded. Upon getting a zero result, PostgreSQL will assume that
the WAL segment file has been successfully archived, and will remove or recycle
it. However, a nonzero status tells PostgreSQL that the file was not archived;
it will try again periodically until it succeeds.
The archive command should generally be designed to refuse to overwrite any
pre-existing archive file. This is an important safety feature to preserve the
integrity of your archive in case of administrator error (such as sending the
output of two different servers to the same archive directory). It is advisable
to test your proposed archive command to ensure that it indeed does not
overwrite an existing file, and that it returns nonzero status in this case. We
have found that cp -i does this correctly on some platforms but not others. If
the chosen command does not itself handle this case correctly, you should add a
command to test for pre-existence of the archive file. "
----- Original Message -----
From: Khan, Mahmood Ahram
To: Ashish Karalkar
Sent: Friday, May 18, 2007 9:07 AM
Subject: RE: [ADMIN] WAL FILES
Thanks Ashish,
Its working fine now. And I set the archive timeout parameter to 25. (i,e 25
seconds).
So Thanks once again.
Thanks & Best Regards
M.AHRAM KHAN
------------------------------------------------------------------------------
From: Ashish Karalkar [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 17, 2007 6:26 PM
To: Khan, Mahmood Ahram
Subject: Re: [ADMIN] WAL FILES
I think u should try
archive_command = ' copy %p d:\archive\%f '
I hope this should work.
I am not windows user but still i think.
Please let me know if it works.
set the archive timeout para to lower value to see it works or nt immediately.
With regards
Ashish...
----- Original Message -----
From: Khan, Mahmood Ahram
To: [email protected]
Sent: Thursday, May 17, 2007 4:42 PM
Subject: [ADMIN] WAL FILES
Hi All,
I am archiving PostgreSQL Database. I want to copy all my WAL files from
pg_xlogs folder to d:\archive
I am using PostgreSQL 8.2 on Windows XP.
And my archive_command looks like this ( archive_command copy
c:\Program Files\PostgreSQL\8.2\data\pg_xlog d:\archive\ )
But it is loading the files in pg_xlogs folder itself. So Can anybody have
idea about this.
Thanks & Regards
M.AHRAM KHAN
