G u i d o B a r o s i o <gbarosio@uolsinectis.com.ar> writes:
> [postgres@prdpwgb0208 postgres]$ createlang plpgsql tech_mis
> createlang: language installation failed: ERROR: could not load library "/usr/local/pgsql/lib/plpgsql.so":
/usr/local/pgsql/lib/plpgsql.so:undefined symbol: PG_exception_stack
I think you've got a version mismatch problem --- specifically, it looks
like you are trying to load an 8.0 plpgsql.so into a pre-8.0 backend.
PG_exception_stack is (just by chance no doubt) the first symbol the
newer code tries to reference that's not in the older backend.
regards, tom lane