Enterprise Server Processes

CASCD - Region Console Daemon
CASCD manages region processes and console log messages. There is one of these console daemon process for every region. It is started by the casstart process.

CASCD is the parent of all other processes that run for the lifetime of the region. If it detects they have died, it informs CASMGR and restarts them.

Responsibities:

  • Starting processes
  • Monitoring started processes
  • Informing Server Manager of any process termination
  • Console Messages
CASMGR - Region Server Manager
CASMGR is started by the CASCD process, and works in conjunction with the Console Daemon to provide process management. There is one server manager process per region, represented by a DCA control block in shared memory.

Responsibilities:

  • Creates and manages the IPC area (shared memory) based on configuration data from MFDS
  • Controls the system state of Enterprise Server
  • Participates in error recovery processing
  • Handles CICS Interval Control Processing
  • Monitors region state for timeouts and deadlocks
  • Dispatches JCL jobs to initiators
CASTRC - Region Trace Control (TRC)
CASTRC writes trace to disk when auxiliary tracing is active and generates HSF data. There is one process per region. It is started by CASCD.

Responsibilities:

  • Auxiliary trace hardening - to casauxta.rec and casauxtb.rec
  • Creation of historical statistic information
CASTSC - Region Temporary Storage, Channels and Containers Control (TSC)
CASTSC controls temporary storage, channels, and containers. There is one process per region. It is started by CASCD.

Responsibilities:

  • CICS Channels and Containers support
  • Historical Statistics Facility
  • Auxiliary trace logging
  • CICS journal control
  • CICS extra-partition transient data processing
  • Distribution of system events to interested parties
MFCS - Micro Focus Communication Server

MFCS is the region communication component which handles the communication between clients and the Enterprise Server. There can be one or more communications servers per region depending on capacity needs.

MFCS is started by CASCD and contains the following service listeners:

  • TN3270
  • CICS ISC
  • Web Services

It is represented by a TCTS control block in shared memory.

CASDBC - IMS Database Control

CASDBC is responsible for IMS DB support and is an optional component with one for every region. It is started by CASCD.

CASTMC - IMS Transaction Manager Control
CASTMC is responsible for IMS TM support, and is an optional component with one for every region. It is started by CASCD.
Parent topic: The Micro Focus Directory Server