"Xueying (Libby) SHEN" <xshen@cs.umass.edu> writes:
> Hi, I installed PostgreSQL 7.2.1 on my Linux machine and I am exploring
> the features. When I use pg_dump to backup my database, I get
> the error message below:
> =======================================================================
> Database version: PostgreSQL 7.2.1 on i686-pc-linux-gnu, compiled by GCC
> 2.96
> Archiver(db) version: 7.1.3
> Aborting because of version mismatch.
> Use --ignore-version if you think it's safe to proceed anyway.
> ========================================================================
> This is my first time to install the system and I don't have any 7.1.3
> on my system.
Yes you do: clearly you are invoking the pg_dump from it.
Most likely the Linux installation included a set of 7.1.3 PG executables,
and that set is in your search path ahead of whereever you put 7.2.
Check your PATH.
regards, tom lane