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44 DB2 Manager User Guide
StorageTek Proprietary
DB2 Manager Control Region
All access to Archive Manager databases containing migrated rows is
performed via the DB2 Manager control region. This is a started task, which
must be initiated prior to performing any DB2 row migration or retrieval
activities.
This chapter describes the operation and control of the DB2 Manager control
region.
The DB2 Manager control region performs the following functions:
• Enables DB2 Manager for Archive Manager database processing.
• Enables interception of all SQL insert, update and retrieve commands for
DB2 tables which have been enabled for DB2 Manager migration
processing.
• Establishes the environment for object storage and retrieval from Archive
Manager.
• Processes SQL retrieve and update requests for rows which have been
migrated to Archive Manager.
• Performs object storage processing when migrating rows to an Archive
Manager database.
• Performs SMF record creation to record DB2 Manager row access activity.
• Processes requests from the operator interface facility.
No other system activities are required in order to enable DB2 Manager row
storage and retrieval processing. In particular, no modifications are required
to existing application coding to allow access to rows which have been
migrated to an Archive Manager database.
Control region initialization
The DB2 Manager control region is initiated as an MVS started task. Any
valid procedure name may be assigned to this started task. The procedure
used for starting this task was created during the DB2 Manager installation
process. JCL to execute this procedure is supplied in the sample JCL library
distributed with the product.
The following points should be noted regarding creation and maintenance of
the LCDDB2 procedure:
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