You can use the restoreConfig and wsadmin commands
to roll back a migrated WebSphere® Application Server Version 8.0 stand-alone application
server to the state that it was in before migration.
Before you begin
Supported configurations: This
topic is about configuration migration, such as migrating deployment
managers and federated nodes in a network deployment environment.
The Application Migration Toolkit for WebSphere Application Server
provides support for migrating applications from previous versions
of WebSphere Application Server to the latest product version. For
information about migrating applications, read more about the Application
Migration Toolkit.
sptcfg
Best practice: When migrating a Version 6.x
or 7.x stand-alone application server, the best practice is to perform
the following actions if you want to be able to roll it back to its
previous state after migration:
- Run the backupConfig command or your own preferred
utility to back up the Version 6.x or 7.x stand-alone application
server configuration.
Important: Make sure that you note
the exact name and location of this backed-up configuration.
Read
the "backupConfig command" article in the information center for more
information.
- Migrate the stand-alone application server.
- If necessary, you can now roll back the stand-alone application
server that you just migrated.
Procedure
- Stop all of the servers that are currently running in the Version 8.0 environment.
- Perform one of the following actions to restore the Version
6.x or 7.x configuration for the stand-alone application server.
- Run the restoreConfig command or your own preferred
utility to restore the Version 6.x or 7.x configuration.
Important: Make sure that you restore the same backed-up configuration
that you created just before you migrated this stand-alone application
server.
Read the "restoreConfig command" article in the information
center for more information.
- Use the wsadmin command to run
the migrationDisablementReversal.jacl script
from the Version 6.x or 7.x WAS_HOME/bin directory
of the stand-alone application server that you need to roll back from Version 8.0.
Use the following
parameters:
./wsadmin.sh -f migrationDisablementReversal.jacl -conntype NONE
- If you chose to keep the installed applications in the
same location as the prior release during migration to Version 8.0 and any of the Version 8.0 applications are
not compatible with the prior release, install applications that are
compatible.
- Start the rolled-back stand-alone application server in
the Version 8.0 environment.
Results
The configuration should now be returned to the state that
it was in before migration.
What to do next
You can now restart the migration process if you want to
do so.