Yes, that could be the case. We have a python function that imports CSV files, which can take a long time, and that may have been running during that time. I didn't look at the pg_lock file. What should I be looking for?

On Jul 20, 2006, at 3:13 PM, Tom Lane wrote:

Claire McLister <[EMAIL PROTECTED]> writes:
  We have a couple of tables (40,000 and 600,000 rows each) that I am
trying to build an index on an integer column.

  When I issue the "create index foo_index on foo(id);" command in
psql it just does not return. I've waited over half an hour for the
smaller table.

It sounds like someone had a write lock on the table.  Did you try
looking in pg_locks?

                        regards, tom lane

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