From: | Massimo Dal Zotto <dz(at)cs(dot)unitn(dot)it> |
---|---|
To: | hackers(at)postgreSQL(dot)org (PostgreSQL Hackers) |
Cc: | michael(dot)j(dot)davis(at)tvguide(dot)com (Michael J Davis) |
Subject: | Re: [HACKERS] How do I get the backend server into gdb? |
Date: | 1999-04-29 09:28:22 |
Message-ID: | 199904290928.LAA01786@nikita.wizard.net |
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Lists: | pgsql-hackers |
>
> I need to debug this connection problem I am having with Access97. My
> question is how can I get the new Postgres backend that starts up for Access
> into debug (gdb)? I can get the PostMaster open in gdb.
>
> Thanks, Michael
>
$ postgres -h
postgres: illegal option -- h
Usage: postgres [options] [dbname]
...
-W wait N seconds to allow attach from a debugger
I added the -W option for this purpose. You should start the postmaster
with the following option:
postmaster -o '-W 15' ...
The -W option is passed to the backend which sleeps 15 seconds before doing
any work. In the meantime you have the time to do a ps, find the backend pid
and attach gdb to the process.
Obviously you can't do that in a production environment because it adda a
fixed delay for each connection which will make your users very angry.
--
Massimo Dal Zotto
+----------------------------------------------------------------------+
| Massimo Dal Zotto email: dz(at)cs(dot)unitn(dot)it |
| Via Marconi, 141 phone: ++39-0461534251 |
| 38057 Pergine Valsugana (TN) www: http://www.cs.unitn.it/~dz/ |
| Italy pgp: finger dz(at)tango(dot)cs(dot)unitn(dot)it |
+----------------------------------------------------------------------+
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