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
Read Overview of migration, coexistence, and interoperability and Premigration considerations.
For resources to help you plan and perform your migration, visit Knowledge Collection: Migration planning for WebSphere Application Server.
Read WASPreUpgrade command and WASPostUpgrade command for descriptions of the parameters
related to the information that you need to collect before you begin
this procedure. (The Migration wizard prompts you for the information
during the migration.)
Before using the Migration wizard, you should
have installed Version 8.0 already.
You can first use the Profile Management tool
or the
manageprofiles command to create a valid
new target
Version 8.0 application
server profile if one does not already exist, or you can create a
target profile later using the Migration wizard.
Restriction: You
cannot use the Profile Management Tool to create profiles for WebSphere Application Server installations
on 64-bit architectures except on the Linux for zSeries platform.
However, you can use the Profile Management Tool on other 64–bit architectures
if you use a WebSphere Application Server 32–bit
installation.
The WebSphere Application Server (base) product creates
a valid Version 8.0 profile
for a stand-alone application server during installation.
Tip: Before migrating a WebSphere Application Server Version 6.x application
server, use the backupConfig command or your own
preferred backup utility to back up your existing configuration if
you want to be able to restore it to its previous state after migration.
Read the "backupConfig command" article in the information center
for more information. Make sure that you note the exact name and location
of this backed-up configuration.
About this task
The Migration wizard was introduced in WebSphere Application Server Version 6.0. The
wizard is the graphical interface to the primary Version 8.0 command-line migration
tools, which are the WASPreUpgrade command and
the WASPostUpgrade command.
After gathering all of the information that
is required during the migration, use the wizard to migrate a WebSphere Application Server Version 6.x application
server to a Version 8.0 stand-alone
application server.
For help in troubleshooting
problems when migrating, see Troubleshooting migration.
- Start the Migration wizard.
- Read the Welcome panel to learn about the migration process,
and then click Next.
- Select or specify a previous version of WebSphere Application Server from which to
migrate, and then click Next.
Select the check
box and enter the location of the previous installation if it does
not display in the selection list.
- Select the source profile or instance that you want to
migrate, and then click Next.
- Select the target profile to which you want to migrate
from the list of valid profiles for the installation or select Create
new profile, and then click Next.
Select
the check box to create a backup copy of the target profile's configuration
before migrating the source profile. If you select the check box,
the backup copy of the target profile will be written to profile_root/temp/MigrationBackup.time_stamp.zip.
You can use the restoreConfig command to restore
the configuration after migration if necessary.
Note: When migrating a stand-alone
application server from Version 6.x to Version 8.0, you can choose a
stand-alone application server node that has already been registered
with an administrative agent as the target of the migration.
- If you selected Create new profile on the last panel,
enter the parameters for creating the new profile and then click Next.
- Specify a migration backup directory in which to place
a backup copy of the configuration from the previous version, and
then click Next.
The directory is created if
it does not already exist. If the directory exists, it should be empty
because the backup operation might overwrite existing backup files.
- Select one of the options for migrating the applications
installed on the source profile, and then click Next.
You
can choose to do any one of the following with the applications:
- If you selected the option to install your applications,
specify where the migrated applications should be located and then
click Next.
You can choose any one of the following
options:
- Keep the applications in the same directories in which they are
currently located.
Restrictions: If
you choose this option, the location is shared by the existing
WebSphere Application Server Version 6.x installation
and the
Version 8.0 installation.
If you keep the migrated applications in the same locations as those
of the previous version, the following restrictions apply:
- The WebSphere Application Server Version 8.0 mixed-node support
limitations must be followed. This means that the following support
cannot be used when evoking the wsadmin command:
- Precompile JSP
- Use Binary Configuration
- Deploy EJB
- You risk losing the migrated applications unintentionally if you
later delete applications from these locations when administering
(uninstalling for example) your Version 6.x installation.
- Choose to install the applications in the default directory of
the target version.
- Specify the directory in which to install the migrated applications.
- Select one of the options for setting port values, optionally
specify a starting port value for resolving port conflicts, and then
click Next.
You can choose to do ether one of
the following with the port values:
- Use the port values assigned to the previous (source) installation.
- Use the port values assigned to the target profile.
By default, a port conflict is resolved by incrementing
the port number by one until an unused port number is found. Instead,
you can specify a starting port number to be used when a conflict
is detected. If the starting port number is in use, it will be incremented
by one until an unused port number is found.
- Select the check box if you want to migrate to support
script compatibility, and then click Next.
If
you select this option, migration creates the following Version 6.x
configuration definitions:
- Transports
- ProcessDef
- Version 6.x SSL
- Version 6.x ORB service threadpool
instead of the following
Version 8.0 configuration definitions:
- Channels
- ProcessDefs
- Version 8.0 SSL
- Version 8.0 ORB service
threadpool
Select this option in order to minimize impacts to existing
administration scripts. If you have existing wsadmin scripts
or programs that use third-party configuration APIs to create or modify
the Version 6.x configuration definitions, for example, you might
want to select this option during migration.
Note: This
is meant to provide a temporary transition until all of the nodes
in the environment are at the
Version 8.0 level. When they
are all at the
Version 8.0 level,
you should perform the following actions:
- Modify your administration scripts to use all of the Version 8.0 settings.
- Use the convertScriptCompatability command
to convert your configurations to match all of the Version 8.0 settings.
Read convertScriptCompatibility command for more information.
- Specify the administrative console workspace user root
directory where the "My Tasks" user information is stored in the previous
installation, and then click Next.
This panel
displays only if you are migrating from Version 6.1.x.
- Enter the administrative security credentials for the source WebSphere Application Server installation,
and then click Next.
This panel displays only
if security is enabled and if the server user identity is not stored
in the repository.
- Check the information in the summary panel and make sure
that it is correct, and then click Next to start the migration.
- If the wizard indicates that the profile-creation process
was successful, click Next.
This panel displays
only if you selected the option to create a new target profile.
If
the process is not successful, the wizard displays a failure panel.
If the process is partially successful, the wizard displays a warning
panel. Correct any problems and retry the migration.
- If the wizard indicates that the pre-upgrade process was
successful, click Next.
If the process is not
successful, the wizard displays a failure panel. If the process is
partially successful, the wizard displays a warning panel. Correct
any problems and retry the migration.
- If the wizard indicates that the post-upgrade process was
successful, click Next.
If the process is not
successful, the wizard displays a failure panel. If the process is
partially successful, the wizard displays a warning panel. Correct
any problems and retry the migration.
- If the wizard indicates that the migration was successful,
click Next.
If the process is not successful,
the wizard displays a failure panel. If the migration is partially
successful, the wizard displays a warning panel. Correct any problems
and retry the migration.
- Click Next to migrate another profile, or click Cancel to
exit the Migration wizard.