Subtasks
An HCL Workload Automation for Z address space (subsystem) consists of many z/OS subtasks. Some of these subtasks are always attached when the subsystem is started, others are conditionally attached according to initialization parameters specified for the scheduler options (OPCOPTS) statement in the HCL Workload Automation for Z parameter library.
When a Z controller is started in standby mode, only the HCL Workload Automation for Z main task (EQQMAJOR) is started. The subtasks that comprise an active Z controller are attached when a takeover is performed.
HCL Workload Automation for Z subtasks describes the subtasks.
| Subtask ID | Component code | Description | Activated by | Function |
|---|---|---|---|---|
| APPC | PP | APPC functions | OPCOPTS APPCTASK(YES) | Starts APPC support |
| AR | AR | Automatic recovery | OPCOPTS RECOVERY(YES) | Manages failing operations |
| CPH | CPH | Critical path handler | Always activated | Updates the critical job table |
| DBF | DF | DB Filler | FEDERATOR parameter of MIRROPTS | Replicates CP data to the database referenced by the Federator |
| DRT | DX | Data router | Always activated | Routes data to other subtasks or HCL Workload Automation for Z subsystems |
| EMGR | EM | Event manager | OPCOPTS OPCHOST(YES) | Processes job-tracking events |
| ERDR | ER | Event reader | OPCOPTS ERDRTASK(n) | Reads events from an event data set |
| EWTR | EW | Event writer | OPCOPTS EWTRTASK(YES) | Writes events to an event data set |
| EXA | EX | External router | OPCOPTS OPCHOST(YES) | Calls EQQUX009 to route submit requests to a user-defined destination ID |
| FL | FL | Fetch joblog | OPCOPTS RCLEANUP(YES) | Retrieves JOBLOG information |
| GEN | GS | General service | OPCOPTS OPCHOST(YES) | Processes HCL Workload Automation for Z dialog requests |
| HTC | HTC | HTTP client | HTTP parameter of ROUTOPTS | Manages communications with z-centric agents through the HTTP or HTTPS protocol |
| HTS | HTS | HTTP client | HTTP parameter of ROUTOPTS | Listens for inbound requests from the z-centric agent |
| ID | ID | TCP/IP Data Store | TCPDEST parameter of FLOPTS | Manages communications with TCP/IP-connected Data Stores |
| IP | IP | TCP/IP tracker | TCPIP parameter of ROUTOPTS | Manages communications with TCP/IP-connected standard trackers |
| JCC | JC | Job completion checker | OPCOPTS JCCTASK(YES) | Scans SYSOUT data sets |
| JLA | JL | JT and DB logs archiver | OPCOPTS OPCHOST(YES) | Copies JT and DB logs to the archive data set (EQQJTARC and EQQDBARC, respectively) |
| NMM | NM | Normal mode manager | OPCOPTS OPCHOST(YES) | Maintains the current plan |
| PSU | PS | Pre-SUBMIT tailoring | OPCOPTS RCLEANUP(YES) | Tailors the JCL before submitting it by adding the EQQCLEAN pre-step |
| RODM | RM | RODM support | OPCOPTS RODMTASK (YES) | Starts RODM support |
| SUB | SU | Submit task | Always activated | Initiates work (job submit, job release, and WTO and STC operations) |
| VTAM® | CB | Network communication function (NCF) | OPCOPTS NCFTASK(YES) | Transmits and receives HCL Workload Automation for Z data through a VTAM® link |
| WSA | WA | Workstation analyzer | OPCOPTS OPCHOST(YES) | Schedules work for processing |
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Note: The subtask ID is the same identifier used to control the subtask using the z/OS MODIFY command.
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