This section describes the setup and configuration tasks that are required to convert an existing Replication Server warm standby application to a Mirror Activator system.
If you are setting up a new Mirror Activator system (that is, using a primary database that was not previously configured for a warm standby application), see “Setting up a new Mirror Activator system” for complete setup and configuration tasks.
Table 2-2 provides a checklist of the tasks required to configure software components and set up the Mirror Activator system for replication when you convert an existing warm standby application to a Mirror Activator system.
The checklist in Table 2-2 assumes that:
The Replication Server and primary and standby databases are already configured for a warm standby application, and the warm standby application is functioning properly to replicate transactions from the primary database to the standby database.
You need not materialize the standby database because it has been maintained by the Replication Server, and it already contains data and schema that are identical to the primary database.
You have already completed all of the tasks described in “Setting up Mirror Replication Agent connectivity”, except:
Creating the Replication Server user login name (for the Mirror Replication Agent), and
Setting up the Mirror Replication Agent configuration parameters for the Replication Server connection.
If the Replication Server and primary and standby databases
were not previously configured for a Replication
Server warm standby application, do not use
the task checklist in Table 2-2. You must instead use the setup and configuration
tasks described in “Setting up a new Mirror Activator system”.
When converting an existing warm standby application to a Mirror Activator system, you must perform all of the tasks in Table 2-2 in the order they are shown. If you deviate from this sequence, the results may be unpredictable, and you may have to back out of the entire process and start over.
Task |
Description |
|---|---|
1 |
Materialize the mirror log devices, and set up the disk replication system for synchronous replication to the mirror log devices. |
2 |
Set up the Mirror Replication Agent configuration parameters for the Replication Server connection. |
3 |
Stop and disable the RepAgent thread in the primary database.
|
4 |
Initialize the primary database using the Mirror Replication Agent pdb_init command.
|
5 |
Quiesce the primary database. |
6 |
Initialize the Mirror Replication Agent using the ra_init command, and set the paths to the mirror log devices. |
7 |
Resume update activity in the primary database after Mirror Replication Agent initialization is complete. |
8 |
Resume the Mirror Replication Agent to put it in Replicating state. |
The following sections contain detailed procedures for each setup and configuration task.
