| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: changing MyDatabaseId |
| Date: | 2010-11-15 12:56:17 |
| Message-ID: | 1289825681-sup-174@alvh.no-ip.org |
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| Lists: | pgsql-hackers |
Excerpts from Tom Lane's message of lun nov 15 02:41:40 -0300 2010:
> I believe also that there are probably race conditions in several of
> the steps you listed; in particular there is certainly a risk involved
> in changing the database-we-advertise-being-connected-to versus a
> concurrent DROP DATABASE. Maybe that's easily soluble, but I'm not sure
> about it.
Perhaps it would help to first disconnect from the original database and
not reconnect to any one in particular, i.e. stay in a state like the
autovac launcher is in. Then cleanup as per Robert's list, then switch
to a valid database ID.
--
Álvaro Herrera <alvherre(at)commandprompt(dot)com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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