Oracle Enterprise Manager to 10g Grid Migration Process

Migrating from previous Oracle Enterprise Manager releases to Grid Control is a two-step process:

1. Deploy the OMA (Agent) to all managed servers.
2. Migrate existing Oracle Enterprise Manager administrator accounts to Grid Control.

1. Deploy the OMA (Agent) to all managed servers.

To simplify and automate Management Agent deployment, a Tcl script is provided that is submitted as a job from an Enterprise Manager Release 2.2, Release 9.0.1, or Release 9.2 Job system. The deployment script (agentIntallJob.tcl) can be found in the Oracle Enterprise Manager 10g home directory at the following location:

%ORACLE_HOME/sysman/agent_download/agentInstallJob.tcl

2. Migrate existing Oracle Enterprise Manager administrator accounts to Grid Control.

Once the Oracle Enterprise Manager 10g Management Agents have been deployed and configured, the next step is to migrate information about users, privileges, groups, and preferred credentials from the original Management Repository to the Oracle Enterprise Manager 10g Management Repository.

Both Enterprise Manager 9i and Oracle Enterprise Manager 10g save and encrypt all administrator accounts and preferred credentials in the repository. In order to migrate all of these accounts over to Enterprise Manager 10g, you must run the Migration Utility from the Enterprise Manager 10g home.

This command line utility can be found in the following directory: %EM_HOME%/bin/repo_mig

The Migration Utility requires the repository user and password for both the original Management Repository database and for the new Oracle Enterprise Manager 10g Management Repository database.

You execute the utility and specify operational parameters using the following format:

$ repo_mig   –migrate  EM_user/password@old_repository_host:port:sid  sysman/password@OMR_host:port:sid

where:
-preview: Generates a preliminary migration report without carrying out the migration.
-migrate: Performs migration of groups, administrators, target privileges, and preferred credentials of hosts, databases, and listeners.
source_user: Source OEM repository user name
source_pwd: Source OEM repository password
source_service: Source OEM repository service. For example, Host:Port:SID
dest_user: Destination OEM repository user name
dest_pwd: Destination OEM repository password
dest_service: Destination OEM repository service. (Host:Port:SID)

Once the migration is complete, the account information is then saved and encrypted. The passwords on all of the accounts will remain the same.