CA Database Copier for IMS
CA Database Copier™ for IMS for z/OScreates copies of IMS databases. You can make the following types of copies:
- A copy of an IMS database whether the database is used concurrently by an online IMS system in update mode, or otherwise.
- A copy by reading the database directly or by making an incremental image copy.
- An incremental image copy (a new backup copy by merging all the database changes found in the IMS Change Accumulation file with the old backup copy). The resulting backup copy is the database image at the later point in time and, if database recovery is needed, is the input to the recovery process.
- Backup copies of CAGRPs, DBGRPs, DBDSGRPs, and RECOVGRPs.
- Asynchronous image copies of multiple IMS database data sets in parallel in the same job step.
- A “snapshot copy” of a database and then create the actual image copy from the snapshot image.
This section lists the
CA Database Copier™ for IMS for z/OShighlights:
- Supports Full Function (HDAM, HIDAM, HISAM, and SHISAM), Fast Path DEDB (data entry database), and index databases.
- Supports HALDB (PHDAM and PHIDAM) databases.
- Supports OSAM (up to 8 GB for full-function databases and 4 GB for HALDBs) and VSAM (up to 4 GB) access methods.Support for both VSAM and OSAM data sets that are placed in the extended addressing space on Extended Address Volumes (EAV) is provided.
- Supports flash copies of all database types (Full Function, Fast Path, and HALDB).
- Makes image copies of data sets defined to Change Accumulation groups (CAGRP), database data set groups (DBDSGRP), database groups (DBGRP), and database recovery groups (RECOVGRP).
- Makes incremental image copies producing a batch image copy without reading the database. The process does not affect the performance of systems and applications accessing the database.
- Can create asynchronous image copies of multiple IMS database data sets in parallel in the same job step.
- Optionally, invokes DBRC and IRLM in share control and recovery control environments.
- Uses a separate buffer pool local toCA Database Copier™ for IMS for z/OS. In NMD mode, the IMS Fast Path buffer pool is not used for DEDB access.
- Uses optimized buffering schemes for all files.
- Integrates withCA Database Analyzer™ for IMS for z/OSto validate the integrity of the image copy being produced.
- The high performance I/O facility can save time when a copy of an image copy is needed. The copy image copy function operates at channel speed with optimal buffer tuning to create an image copy identical to the input image copy.
IMS Information Repository (IIR)
The IMS Information Repository (IIR) provides a set of tables that are stored in a relational database management system (RDBMS) known as CA Datacom.
When IIR is selected during execution (IIRRECORD=YES), one or more rows are created at the completion of the job in the corresponding IIR tables. The columns stored in each of these tables correspond to the informational fields provided on the output report for the executed utility.
The IIR feature is optional and does not affect the overall performance of the monitored utility jobs. The information collected provides significant benefit to the IMS user in performance tuning, problem determination, and resource planning.
The CA Datacom relational database environment included with the IIR environment provides several reporting tools that can be used to report on the data stored in the IIR tables. In addition, various methods are available to extract the data in the IIR repository for use by other reporting tools.
Global Parameter Processing
Global parameter processing lets you specify installation standard keyword definitions in a PDS member (or sequential data set). Once defined, you can use these definitions to supplement the keyword parameters coded in the JCL control statements.