sys.zOS.IMSSubsystem
IMS subsystems consist of several specialized address spaces running on a z/OS® system. Each provide different IMS services for the subsystem. Each subsystem has one address space known as the Control region which regulates the IMS subsystem as a whole. The subsystem name is also known to all address spaces in the subsystem as the IMSID.
Attributes
| CDM attribute | Value | Example |
|---|---|---|
| (Subsystem) SubsystemName | The 1-4 character name of the IMS subsystem. | IMN3 |
| (Subsystem) VersionString | The version and release of the IMS control region | 15.1 |
| (Subsystem) CommandPrefixName | A prefix used by support personnel to direct commands to the IMS subsystem. It is often the same as the IMSID. | IMN3 |
| (Subsystem) ControllingAddressSpace | The Jobname of the Control region. This is needed to identify the address space to support personnel. | IMN1CTL |
| IMSSubsysType |
There are three types of IMS subsystem and this is reflected by the type of Control region, they are: v DCCTL has only the Transaction Manager component and provides access to the IMS message queues for IMS applications. v DBCTL has only the Database Manager component and provides IMS database functions. v DB/DC provides Transaction Managemer and Database Manager functions for large application systems. |
DCCTL DBCTL DB/DC |
| IRLMGroupName | The XCF group name used by all CQS address spaces that share the same set of XCF structures. | IMN0IRM |
| CQSGroupName | The XCF group name used by all CQS address spaces that share the same set of XCF structures. All CQS group names have the prefix CQS. | CQSIMN3 |
| IMSPlexGroupName | An IMSPLEX group name represents group of IMS components (subsystems) that share either data and/or message queues. All IMSPLEX members (for example, OM, RM, IMS, CQS) that are in the same IMSPLEX sharing group that share either databases or message queues must specify the same identifier. | CSLIMN0 |
| TransactionsChecksum | Checksum for all transactions defined to the IMS. | |
| ProgramsChecksum | Checksum for all programs defined to the IMS. | |
| DatabasesChecksum | Checksum for all databases defined to the IMS. |
Requirements for discovery
- IMS Subsystem book has all attributes and all relationships except to AddressSpaces.
- ZOSTASK book has naming rules and relationships to AddressSpaces.
- Filtering enabled (which is the default). Note that following Attribute level filters are disabled by default because they can be large at some sites. The customer needs to consciously choose to discover these: Transactions, Programs.
- IMS subsystem and related address spaces must be active and fully initialized.
- Attributes and relationships that are marked with an asterisk (*) are discovered only when the DLA runs in authorized mode.
- No configuration datasets are read for this discovery, that is, no special data set authority required.
CDM specific information
| CDM Naming Policy | sys.zOS.IMSSubsystem | |
| CDM Attribute | Value | Example |
| Label | SubsystemName-SMFID | IMN3-OMO1 |
| id (IdML) | SubsystemName-SMFID-IMSSubsystem | IMN3-OMO1-IMSSubsystem |
| sourceToken (IdML) | SubsystemName-SMFID-IMSSubsystem | IMN3-OMO1-IMSSubsystem |
Naming rules
SubsystemName and hostedDependency relationship to sys.zOS.zOS.ControllingAddressSpace and hostedDependency relationship to sys.zOS.zOS.
Relationships
| Link type | Source | Target | Comment |
|---|---|---|---|
| hostedDependency | sys.zOS.IMSSubsystem | sys.zOS.zOS | Part of primary naming rule a long with SubsystemName attribute. |
| federates | sys.zOS.IMSSubsystem | sys.zOS.AddressSpace | For all related Control region, DLI, DBRC, IRLM, CQS, FDBR, CONNECT, OM, SCI, RM, |
| uses | sys.zOS.AddressSpace | sys.zOS.IMSSubsystem | For all related Dependant Regions, for example, MPR, JMP, IFP, BMP, JBP, DBT |
| uses | sys.zOS.IMSSubsystem | sys.zOS.DB2Subsystem | There may be 0 or 1 DB2® related to the IMS. |
| uses | sys.zOS.IMSSubsystem | sys.zOS.MQSubsystem | There may be 0 or 1 MQ related to the IMS. |
| uses | sys.zOS.IMSSubsystem | sys.zOS.IMSSysplexGroup | For related IRLMGROUP, CQSGROUP and IMSPLEX. |
| accessedVia | sys.zOS.IMSSubsystem | net.BindAddress |
For all related federated address spaces that are listening on a TCP and UDP Port. This relationship is used by the DLA sensor to stitch relationships with distributed resources. |
| uses | sys.zOS.CICSRegion | sys.zOS.IMSSubsystem | |
| Contains | sys.zOS.IMSSubsystem | sys.zOS.IMSTransaction | |
| Contains | sys.zOS.IMSSubsystem | sys.zOS.IMSProgram | |
| Contains | sys.zOS.IMSSubsystem | sys.zOS.IMSDatabase |