Before you upgrade to a new version of the database server,
you must perform a complete backup.
About this task
Important: The database server conversion software
automatically recreates the sysutils database when you upgrade
to the latest version of the database server. All backup and restore
information from the old database server version is lost. Backups
that you make under the older version of the database server are not
compatible with the newer version of the database server.
To
prepare for an upgrade:
Procedure
- Use ON-Bar to
perform a level-0 backup of all your data before you upgrade your
database server, ISM, or change storage managers.
- Save these backups so that you can restore the data in
case you need to revert to the old database server version.
- Before you upgrade, back up the administrative files.
- After you upgrade the database server, back up all storage
spaces and logical logs.
For complete information about
database server migration, see the HCL OneDB™
Migration Guide.
If
you change storage manager vendors, do not remove the old storage
manager until you verify that the new storage manager works for both
backup and restore operations.