Running IRRMIN00 When PARM=NEW Is Specified
The RACF® database-initialization program (IRRMIN00) formats a non-VSAM DASD data set or creates a CMS file on an FBA disk for use as a RACF database. Use this utility with PARM=NEW to initialize a new, empty, database.
You must run IRRMIN00 during the initial installation of RACF to format the RACF database. After RACF is installed, you can run IRRMIN00 to format an alternate RACF database.
Note: The installation process uses IRRMIN00 to format primary
and backup RACF databases.
The IRRMIN00 program divides a RACF database
into 4K records. When you create a new RACF database,
the following records are initialized:
- Record
- Description
- ICB block
- The header block (inventory control block).
- Templates
- The user, group, data-set, and general template definitions, plus six reserved blocks.
- Segment table block
- Segment definitions from within a template.
- BAM blocks
- BAM (block availability mask) blocks are initialized with the space configuration for the database.
- Empty blocks
- Available for later use as profile blocks or index blocks.
Note: No profile or index blocks are initialized.