Figure 1 shows three job control language (JCL) entry
points from which the ARCUTIL load module can be accessed. Because
ARCUTIL first tries to access the CDS in RLS mode, you can ignore
message IEC161I
009 if you have not specified record level
sharing. This section discusses those entry points. You can choose
any of three methods for collecting system data:
- Invocation of the IDCAMS DCOLLECT command.
DCOLLECT
is a command in Access Method Services (AMS), available in MVS/DFP™
Version 3 Release 2 or later. By using IDCAMS DCOLLECT, you can create
reports including not only DFSMShsm-specific but also DFSMSdfp-specific
information.
You can use the following parameters:
- Parameter
- Data Collected
- MIGRATEDATA
- Migrated data set information
- BACKUPDATA
- Backup version information
- CAPPLANDATA
- Tape capacity and DASD capacity planning
- Direct invocation of ARCUTIL using JCL.
You can access the
ARCUTIL module with JCL and receive DFSMShsm-specific data.
- Invocation of a user-written program.
A user-written program
may request DFSMShsm to create the collection data set. By writing your
own program, you can generate custom reports for your environment
without using the IDCAMS DCOLLECT command. For an example of a user-written
program, see Figure 2.