Hi Thom, thanks for your reply. Here's my psql output: bash-3.00$ bin/psql psql (9.0.1, server 8.1.4) WARNING: psql version 9.0, server version 8.1. Some psql features might not work. Type "help" for help. postgres=# SHOW wal_level; ERROR: unrecognized configuration parameter "wal_level" postgres=# SELECT pg_start_backup('basebackup', true); ERROR: function pg_start_backup("unknown", boolean) does not exist HINT: No function matches the given name and argument types. You may need to add explicit type casts. postgres=# SELECT pg_start_backup('basebackup'); ERROR: WAL archiving is not active HINT: archive_command must be defined before online backups can be made safely. The mismatched server version number doesn't look right! Note that this is a Postgres 9.0 tarball I've extracted onto a server which already has Postgres 8.1.4 installed. Any thoughts from anybody? Thanks. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Can-t-take-base-back-up-with-Postgres-9-0-on-Solaris-10-tp3240364p3240406.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general