Read Before Installing Internet Express A.08.00

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5. If you have a previous version of the Internet Express
PostgreSQL product installed, you must first manually
uninstall it before installing the latest version. If you do not
have a previous version of Internet Express PostgreSQL,
continue to Step 7.
To upgrade to the latest version of Internet Express
PostgreSQL from a previous version, follow these steps:
a. Back up the PostgreSQL databases.
b. Follow these steps for each database cluster to be
migrated:
iUse the pg_dumpall utility of the current version
of PostgreSQL on your system to create a dump of
all the databases in the database cluster. For more
information on the pg_dumpall utility, see the
pg_dumpall manpage.
ii Remove or relocate the database directory. If your
previous database directory was created using an
HP-UX Internet Express PostgreSQL, and you only
worked with the default database, then your
database directory will be
/var/opt/iexpress/postsql. The default
directory must be removed even if it was not used.
c. Use swremove to remove the current HP-UX Internet
Express PostgreSQL installation.