Usage considerations
This section lists system, access, authentication, and storage considerations for
BMC AMI Fast Path Indexer for IMS
.
System requirements
IBM z/Architecture mainframes
BMC licenses BMC AMI Fast Path Indexer for IMS to run on specific CPUs.
- IBMz/OS 1.10 or later
- supported releases of IMS
- APF authorization for the STEPLIB containing the BMC AMI Fast Path Indexer for IMS load library
- standard IMS RESLIB (SDFSRESL) for execution
Access method
When deciding upon a particular type of access method, consider the following information:
- You must code the primary DEDB with the PROCSEQ keyword (for PFX indexes) or PROCSEQD keyword (for IBM native indexes) in the PSB before you can access the data in the primary DEDB through an alternate processing sequence method.
- To access the index as a stand-alone database, you must provide a PCB for that index. You should specify a read-only PROCOPT.
Authentication process
When processing indexes, the BMC AMI Fast Path Indexer for IMS product uses the tiered password feature that is available within the security system for the product.
The tiered passwords allow the product's XSCAN, BUILD, VERIFY, and RESYNC commands to process PFX indexes, IBM native indexes, or both.
Authorization tiers
Tier | Definition |
|---|---|
0 | enables the XSCAN, BUILD, VERIFY, and RESYNC commands to process only PFX indexes |
1 | enables the XSCAN, BUILD, and VERIFY commands to process only IBM native indexes |
2 | reserved for future use |
3 | enables the XSCAN, BUILD, and VERIFY commands to process PFX and IBM native indexes Tier 3 also enables the RESYNC command to process PFX indexes. The commands to process the indexes might be executed in different job steps. |
Storage requirements
BMC AMI Fast Path Indexer for IMS obtains storage from the extended common service area (ECSA) when possible, regardless of the options that are defined in the IMS system.
BMC AMI Fast Path Indexer for IMS must include the minimum storage requirements shown in the following table.
Use | Area | Amount | Attribute |
|---|---|---|---|
system initialization | modules | 10 KB | CSA |
normal execution | modules | 63 KB | CSA |
18 KB | |||
control blocks | 5 KB | CSA | |
per PST | 1.1 KB | ECSA | |
additional storage | definition blocks | 84 bytes per secondary index database | ECSA |
212 bytes per primary DEDB | ECSA |