EMC Centera Disk Option › Secondary Disk Database Maintenance › MERGE Control Statement › Prerequisites

Prerequisites

When you perform a MERGE function with an input database, if the database contains any SYSOUT groups archived to secondary disk storage:

• The contents of the secondary disk SYSOUT groups must have been unloaded with SECOND specified on the UNLOAD control statement.
• The MERGE function then reloads the SYSOUT groups based upon the secondary disk operands on the MERGE command.

MERGE Control Statement:

Syntax:

MERGE tape-index driver parameters

Where:

tape-index

Specifies the high-level naming prefix to be set for the TAPEIDX initialization parameter. This parameter must be coded when using the ‘driver’ and ‘parameters’ parameters.

To prevent conflicts with any existing archival tapes, MERGE requires that this high-level naming prefix for tapes be different from those for any tapes defined in the input databases.

driver

For OPTICAL storage this is the same value specified in the SARINIT DSK2DRVR parameter. Use driver only if you have an optical disk secondary storage driver.

For CENTERA storage, set driver to a value of CENTERA.

Note: For more information, see the chapter "Using the Optical Disk Interface."

parameters

For OPTICAL storage, this value is the same as the value specified in the SARINIT DSK2PARM parameter.

For CENTERA storage this is:

• The IP address of the first Centera access nodes, followed by
• The value specified in the CENTADR initialization parameter, followed by
• The optional value of the name of the Centera Pool Entry Authorization (PEA) data set (the value of the CENTPDSN initialization parameter)

More information:

UNLOAD Control Statement