| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Dan Harris <fbsd(at)drivefaster(dot)net> |
| Cc: | PostgreSQL Performance <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: pg_dump blocking create database? |
| Date: | 2007-09-13 03:21:13 |
| Message-ID: | 25728.1189653673@sss.pgh.pa.us |
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| Lists: | pgsql-performance |
Dan Harris <fbsd(at)drivefaster(dot)net> writes:
> My PG server came to a screeching halt yesterday. Looking at top saw a very
> large number of "startup waiting" tasks. A pg_dump was running and one of my
> scripts had issued a CREATE DATABASE command. It looks like the CREATE DATABASE
> was exclusive but was having to wait for the pg_dump to finish, causing a
> massive traffic jam of locks behind it.
> Once I killed the pg_dump process, things returned to normal.
> Version 8.0.12. Is this a bug?
It's operating as designed :-(. 8.1 and later use less strict locking
on pg_database during create/drop database.
regards, tom lane
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