PostgreSQL - 'could not truncate file "global/21607": permission denied'

Question

So I inherited a Windows system that runs a perl script that connects to a local PostgreSQL database (also on running on this Windows Server). It moves data from one table to another.

I got the following error:

could not truncate file "global/21607": permission denied

Is it possible to find which table corresponds to "global/21607"?

Answer 1

Assuming you are on a recent version of PostgreSQL, you could try:

SELECT pg_filenode_relation(
          (SELECT oid FROM pg_tablespace WHERE spcname = 'pg_global'),
          21607
       );

Could it be that there is an anti-virus program running that locks the file?