CICS system definitions - CSYSDEF

The CICS system definitions (CSYSDEF) views display a CPSM topology definition that describes a CICS system to be managed as part of a CICSPlex.

Supplied views

To access from the main menu, click:

Administration views > CICS system links and related resources > CICS system definitions

Table 1. Views in the supplied CICS system definitions (CSYSDEF) view set
View Notes
CICS system definitions

EYUSTARTCSYSDEF.ADDTOGRP

Add one or more CICS system definitions to a CICS system group.
CICS system definitions

EYUSTARTCSYSDEF.CREATE

Create a CICS system definition and add it to the data repository.
CICS system definitions

EYUSTARTCSYSDEF.DETAILED

Detailed information about a selected CICS system definition.
CICS system definitions

EYUSTARTCSYSDEF.REMOVE

Remove a CICS system definition from the data repository.
  • Note: If the CICS system definition name is specified as a SCOPE in a BAS definition, the REMOVE will fail, with an indication that the record is in use.
CICS system definitions

EYUSTARTCSYSDEF.TABULAR

Tabular information about all CICS system definitions for the CICSplex identified as the context.

Actions

Table 2. Actions available for CSYSDEF views
Action Description
ADDTOGRP Add one or more CICS system definitions to a CICS system group.
CREATE Create a CICS system definition and add it to the data repository.
REMOVE Remove a CICS system definition from the data repository.
  • Note: If the CICS system definition name is specified as a SCOPE in a BAS definition, the REMOVE will fail, with an indication that the record is in use.
UPDATE Update a CICS system definition in the data repository.

Fields

Table 3. Fields in CSYSDEF views
Field Attribute name Description
Period definition name ACTVTIME The name of the period definition that identifies the hours during which this CICS system is to be running.
BAS install failure action AINSFAIL Indicates the action to be taken in the event of a BAS install failure. Options are:
  • CONTINUE
    • Continue installing other resources.
  • NORMAL
    • Shut down the CICS system normally.
  • PROMPT
    • Prompt the operator console for an action. The resource installation process in the CICS system is suspended until the operator responds, but all other MAS processing continues.
  • TERMINATE
    • Terminate the resource installation process. No more resources are installed. Any resources that were successfully installed are not removed.
  • IMMEDIATE
    • Shut down the CICS system immediately.
This action is not performed when resources generated by CICS bundles for applications or platforms fail to install.
Application ID APPLID The application ID of a CICS system is the name by which it is known in the intercommunication network; that is, its netname.
Install BAS resources option AUTOINST Indicates whether resources associated with the system through a resource description should be automatically installed when the MAS connects to the CMAS:
  • ALWAYS - Install resources every time the MAS connects after a CICS startup.
  • COLDONLY - Install resources only when the MAS connects after a CICS INITIAL or COLD start.
  • NEVER - Resources should never be automatically installed in this CICS system.
  • WARMONLY - Install resources only when the MAS connects after a CICS warm start or emergency restart (AUTO).
This option does not apply to resources generated by CICS bundles for applications or platforms.
RS server bottom tier BOTRSUPD For sysplex optimized workloads, this value is converted from a task load percentage to an actual task count. That count will be used to define the bottom tier task load range (from zero up to this value).

The value range is from 1 to 25, or INHERIT.

  • A value of INHERIT means assign the value that is specified for this attribute in the parent CICSplex definition (CPLEXDEF) object for this CICS region. This is the default setting for this attribute.
  • Values between 1 and 25 are applied as an arithmetic percentage to a region's MAXTASKS setting. The task count value from zero up to this value is deemed to be the task load bottom tier. If the task load in a region falls into this range, then it will be broadcast to the coupling facility for every change in the load. Once the load reaches this value, then the RS server update frequency task rules will be activated.

The default value is 1%. You should only change this value after giving consideration to the impact that the change may have on your workload and coupling facility throughput. Any change to this value will be applied at the next region startup.

Last modification agent CHANGEAGENT The change agent identifier that made the last modification.
  • DREPAPI - Resource was last changed by a CICSPlex SM API command.
  • DREPBATCH - Changed by a CICSPlex SM utility.
Last modification agent release CHANGEAGREL The CICS release level of the agent that made the last modification.
Last modification CHANGETIME The local time when the definition was last changed.
Last modification user ID CHANGEUSRID The user ID that made the last modification.
Sample interval for CICS region monitoring CICSSAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
Sample interval for connection monitoring CONNSAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
CSYSDEF context CONTEXT This is an output only field, identifying the CICSplex context for a query. It is required to enable the Hyperlinks on the UPDATERS and READRS attributes.
Definition origin CREATEORIGIN Identifies where the definition originated:
  • N_A - The definition has been created by a user or API program.
  • PLATFORM - The definition has been created during the installation of a platform.
Time created CREATETIME The local time when the definition was created.
Daylight saving time in effect DAYLGHTSV Indicates whether you are currently recognizing daylight saving time. Specify:
  • YES - Recognize daylight saving time.
  • NO - Do not recognize daylight saving time.
  • INHERIT - to inherit the value assigned to the CMAS to which this CICS system is connected when active. When this CICS system is inactive, the value is inherited from the CMAS assigned the task of monitoring the availability of this CICS system. INHERIT can only be specified if both the Time zone (TMEZONE) and Time zone offset (TMEZONEO) values are INHERIT.
Sample interval for DB2/DBCTRL monitoring DBXSAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
Description DESC A 1 to 58-character description of the CICS system definition.
Description code page DESCCODEPAGE The code page of the description field.
Target region active at startup DYNROUTE Indicates whether or not this CICS system is to be active as a target region and accept work for the workload for which it is a target at CICS startup.
  • YES - The CICS system is to be an active target and accept work for the workload for which it is a target at CICS startup.
  • NO - The CICS system is not a target region, or the CICS system is to be quiesced and will not accept work for the workload for which it is a target at CICS startup.

The Target region in active workload (EYUSTARTWLMAWAOR) view may be used to Activate or Quiesce target regions in a workload.

A target region would normally have this option set to YES. A routing region may have this option set to YES, if it is also acting as a target region in the workload.

Sample interval for file monitoring FILESAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
Sample interval for global region monitoring GLBLSAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
Host name HOST The 116-character host name of the system decimal IPv4 address (for example, 9.20.181.3), or its colon hexadecimal IPv6 address (for example ABCD:EF01::2345:6789). If an IPv4 address is entered as an IPv4 compatible IPv6 address (deprecated) or an IPv4 mapped IPv6 address (for example ::FFFF:1.2.3.4) it is converted to a standard IPv4 dotted decimal address. IPv6 addresses should not be used for CICS Transaction Server for z/OS, Version 3 Release 2 and earlier releases. This is used for IPIC SYSLINK connections.
Sample interval for journal monitoring JRNLSAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
Monitoring status MONSTATUS Indicates whether resource monitoring is to be active when this CICS system is started. Specify:
  • YES - Resource monitoring is to be active. For this to occur, the CICS system must be associated with a monitor specification.
  • NO - Resource monitoring is not to be active.
  • INHERIT - Inherit the value specified with the monitor specification to which this CICS system is associated.
Maintenance point CMAS ID MPCMASID This is an output only field, identifying the maintenance point CMAS for the CICSplex. It is required to enable the Hyperlinks on the UPDATERS and READRS attributes.
Action for CICS-at-maximum-tasks event MXTACTION The name of the action definition to be used when generating a notification about the named condition. Specify * to inherit the action definition from the analysis specification.
Severity for CICS-at-maximum-tasks event MXTSEV The severity level that is to be associated with the named condition. The options are:
  • VLS - Very low severe
  • LS - Low severe
  • LW - Low warning
  • HW - High warning
  • HS - High severe
  • VHS - Very high severe
  • NO - The condition is not to be monitored
  • INHERIT - Derive the severity from the analysis specification
  • N_A - The default severity level for this condition is to be used
Note:

Workload Manager (WLM) health is assessed independently of SAM and is not influenced by SAM settings.

CICS system definition name NAME The 1- to 8-character name for the CICS system to be associated with the CICSplex identified as the context.
Network ID NETWORKID The network ID of the system. NETWORKID is used in combination with the APPLID option to ensure unique naming for connecting systems via IPIC. This is used for IPIC SYSLINK connections.
Action for Non-responsive-MAS event NRMACTION The name of the action definition to be used when generating a notification about the named condition. Specify * to inherit the action definition from the analysis specification.
Severity for Non-responsive-MAS event NRMSEV The severity level that is to be associated with the named condition. The options are:
  • VLS - Very low severe
  • LS - Low severe
  • LW - Low warning
  • HW - High warning
  • HS - High severe
  • VHS - Very high severe
  • NO - The condition is not to be monitored
  • INHERIT - Derive the severity from the analysis specification
  • N_A - The default severity level for this condition is to be used
Note:

Workload Manager (WLM) health is assessed independently of SAM and is not influenced by SAM settings.

Port number PORT This is used by IPIC SYSLINK processing to override the TCPIPSERVICE port number on which inbound requests are received. Valid values are a decimal number in the range of 1 to 65535.
Primary CMAS name PRICMAS The name of the CMAS that is assigned the task of monitoring the availability of this CICS system. When the CICS system is part of a CICSplex that is managed by a single CMAS, specify the name of that CMAS. When multiple CMASs participate in managing the CICSplex, identify the CMAS to which the CICS system normally connects. Naming a CMAS does not prevent the CICS system from connecting to another CMAS when, for example, the primary CMAS is not available.
Sample interval for program monitoring PROGSAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
RS server read interval READRS Within a workload running in optimized mode, this value specifies the minimum interval between target region status refreshes that a routing region would request from the CICS CFDT server. This value will be used to override the default interval value specified in CICSplex definition, which is the parent of this CICS system definition.

The value range is from 0 to 2000 or INHERIT, and represents units of milliseconds:

  • A value of INHERIT means assign the value that is specified for this attribute in the parent CICSplex definition (CPLEXDEF) object for this CICS region. This is the default setting for this attribute.
  • A value of 0 means that a routing region will request a status update of a target region on every occasion that it examines that target region's status.
  • Values between 1 and 2000 specify the minimum millisecond time interval that must expire before a target region's status data can be refreshed.

A low value mean that the router will refresh a target's status from the RS server more often than for a higher value. For workloads in QUEUE mode, this will result in a task load more evenly balanced across the CICS regions in the workload target scope (assuming all other health and link factors are equal) . However, the utilization of the RS server will be correspondingly increased, which may consequently result in a higher utilization of your coupling facility.

A value of 1000 represents a one second interval. The default value is 200 milliseconds

The value specified here will be applied the next time this CICS region is started. If you want the change to be applied to a running instance of this CICS region, then it may be changed in-flight using the MAS views.

Time data is kept after monitoring stops (minutes) RETENTION The number of minutes collected data is to be kept after resource monitoring stops. (Resource monitoring stops when the CICS system stops or when the MAS view command is used to stop resource monitoring for the CICS system.) The retention period can be:
  • 1 - 1440
    • Collected data is to be kept the specified number of minutes.
  • 0
    • Collected data is not to be kept.
  • INHERIT
    • The CICS system is to use the value specified with its associated monitor specification.
Real time analysis status RTASTATUS Indicates whether or not the system availability monitoring (SAM) and MAS resource monitoring (MRM) components of real-time analysis are to be active when this CICS system is started.
  • YES - System availability monitoring and MAS resource monitoring are active.
  • NO - No RTA monitoring is active. If the MAS has just been initialized or has been updated to turn analysis on, NO is displayed until RTA is fully initialized.
  • SAM - System availability monitoring is active.
  • MRM - MAS resource monitoring is active.
  • N/A - The MAS is not connected to its CMAS (the MAS Status field shows INACTIVE).
Action for system availability monitoring event SAMACTION The name of the action definition to be used when generating a notification about the named condition. Specify * to inherit the action definition from the analysis specification.
Severity for system availability monitoring event SAMSEV The severity level that is to be associated with the named condition. The options are:
  • VLS - Very low severe
  • LS - Low severe
  • LW - Low warning
  • HW - High warning
  • HS - High severe
  • VHS - Very high severe
  • NO - The condition is not to be monitored
  • INHERIT - Derive the severity from the analysis specification
  • N_A - The default severity level for this condition is to be used
Note:

Workload Manager (WLM) health is assessed independently of SAM and is not influenced by SAM settings.

Action for system dump event SDMACTION The name of the action definition to be used when generating a notification about the named condition. Specify * to inherit the action definition from the analysis specification.
Severity for system dump event SDMSEV The severity level that is to be associated with the named condition. The options are:
  • VLS - Very low severe
  • LS - Low severe
  • LW - Low warning
  • HW - High warning
  • HS - High severe
  • VHS - Very high severe
  • NO - The condition is not to be monitored
  • INHERIT - Derive the severity from the analysis specification
  • N_A - The default severity level for this condition is to be used
Note:

Workload Manager (WLM) health is assessed independently of SAM and is not influenced by SAM settings.

Exemption from simulated security checks SECBYPASS Indicates whether CICSPlex SM Exemption security is active for this CICS system. Exemption security allows simulated CICS security checks to be bypassed.
  • YES - Exemption security is active for this CICS system.
  • NO - Exemption security is not active for this CICS system.
  • INHERIT - Inherit the Security checking exemption value assigned to the CICSplex with which this CICS system is associated.
Simulated CICS-command security checking status SECCMDCHK Indicates whether or not CICSPlex SM security checking is to simulate CICS command checking for this CICS system. Specify:
  • YES - Simulate CICS command checking for this CICS system.
  • NO - Do not simulate CICS command checking for this CICS system.
  • INHERIT - Inherit the value assigned to the CICSplex with which this CICS system is associated.
Simulated CICS-resource security checking status SECRESCHK Indicates whether CICSPlex SM security checking is to simulate CICS resource checking for this CICS system. Specify:
  • YES - Simulate CICS resource checking for this CICS system.
  • NO - Do not simulate CICS resource checking for this CICS system.
  • INHERIT - Inherit the value assigned to the CICSplex with which this CICS system is associated.
Action for short on storage (SOS) event SOSACTION The name of the action definition to be used when generating a notification about the named condition. Specify * to inherit the action definition from the analysis specification.
Severity for short-on-storage (SOS) event SOSSEV The severity level that is to be associated with the named condition. The options are:
  • VLS - Very low severe
  • LS - Low severe
  • LW - Low warning
  • HW - High warning
  • HS - High severe
  • VHS - Very high severe
  • NO - The condition is not to be monitored
  • INHERIT - Derive the severity from the analysis specification
  • N_A - The default severity level for this condition is to be used
Note:

Workload Manager (WLM) health is assessed independently of SAM and is not influenced by SAM settings.

Action for CICS-stalled event STLACTION The name of the action definition to be used when generating a notification about the named condition. Specify * to inherit the action definition from the analysis specification.
Severity for CICS-stalled event STLSEV The severity level that is to be associated with the named condition. The options are:
  • VLS - Very low severe
  • LS - Low severe
  • LW - Low warning
  • HW - High warning
  • HS - High severe
  • VHS - Very high severe
  • NO - The condition is not to be monitored
  • INHERIT - Derive the severity from the analysis specification
  • N_A - The default severity level for this condition is to be used
Note:

Workload Manager (WLM) health is assessed independently of SAM and is not influenced by SAM settings.

System ID SYSID The 4-character system ID of the CICS system. The value specified must match the CICS SYSIDNT SIT operand or override.
Action for transaction dump event TDMACTION The name of the action definition to be used when generating a notification about the named condition. Specify * to inherit the action definition from the analysis specification.
Severity for transaction dump event TDMSEV The severity level that is to be associated with the named condition. The options are:
  • VLS - Very low severe
  • LS - Low severe
  • LW - Low warning
  • HW - High warning
  • HS - High severe
  • VHS - Very high severe
  • NO - The condition is not to be monitored
  • INHERIT - Derive the severity from the analysis specification
  • N_A - The default severity level for this condition is to be used
Note:

Workload Manager (WLM) health is assessed independently of SAM and is not influenced by SAM settings.

Sample interval for TDQ monitoring TDQSAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
Sample interval for terminal monitoring TERMSAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
Time zone TMEZONE The time zone in which this CICS system is located. Specify:
  • A time zone code letter in the range B through Z. For details of the time zone codes, see table 'Time zone codes' in the CICSPlex SM Administration manual.
  • INHERIT - to inherit the time zone assigned to the CMAS to which this CICS system is connected when active. When this CICS system is inactive, the time zone is inherited from the CMAS assigned the task of monitoring the availability of this CICS system. INHERIT can only be specified if both the Time zone offset (TMEZONEO) is INHERIT and daylight saving time (DAYLGHTSV) is INHERIT .
Time zone offset TMEZONEO The adjustment value that is to be applied to the computed time. This value is used to resolve time references in areas that do not use a standard zone. Specify:
  • A value between 0 and 59 to identify the number of minutes to be added to the time for that time zone (for areas that do not use a standard time zone).
  • INHERIT - to inherit the time zone offset assigned to the CMAS to which this CICS system is connected when active. When this CICS system is inactive, the time zone offset is inherited from the CMAS assigned the task of monitoring the availability of this CICS system. INHERIT can only be specified if both the Time zone (TMEZONE) is INHERIT and daylight saving time (DAYLGHTSV) is INHERIT .
RS server top tier TOPRSUPD For sysplex optimized workloads, this value is converted from a task load percentage to an actual task count. That count will be subtracted from the MAXTASK value for the region to determine top tier task load range. This value will be used to override the default value specified in CICSplex definition, which is the parent of this CICS system definition.

The value range is from 1 to 25, or INHERIT.

  • A value of INHERIT means assign the value that is specified for this attribute in the parent CICSplex definition (CPLEXDEF) object for this CICS region. This is the default setting for this attribute.
  • Values between 1 and 25 are applied as an arithmetic percentage to a region's MAXTASKS setting. The resultant task count value is subtracted from the region's MAXTASKS setting to establish a task load top tier. If the task load in a region runs up to its MAXTASKS limit, then the task load must drop back below this value before the MAXTASKS state for the region is switched off and broadcast to the coupling facility.

The default value is 5%. You should only change this value after giving consideration to the impact that the change may have on your workload and coupling facility throughput. Any change to this value will be applied at the next region startup.

Sample interval for transaction monitoring TRANSAMP The number of seconds in the range 0 - 86400 that CICSPlex SM is to wait between requests to collect sample data for the named type of monitoring. A value of INHERIT means that the CICS system uses the value specified with its associated monitor specification.
RS server update frequency UPDATERS Within a workload running in optimized mode, this value specifies the frequency with which the CICS CFDT (RS) server will be called to modify the value of the task load within a target CICS region. This value will be used to override the default frequency value specified in CICSplex definition, which is the parent of this CICS system definition.

The value range is from 0 to 25, or INHERIT:

  • A value of INHERIT means assign the value that is specified for this attribute in the parent CICSplex definition (CPLEXDEF) object for this CICS region. This is the default setting for this attribute.
  • A value of 0 means that the RS Server is not notified of any task load count changes, which disables the optimized workload function for regions within the scope of this CICSplex.
  • Values between 1 and 25 are applied as an arithmetic percentage to a region's MAXTASKS setting. The resultant task count value is used as a numeric threshold to drive an update call to the RS Server.

For example, with a MAXTASKS setting of 120, and with this attribute set to 20, the RS Server will be called to update the WLM load count when the regions task count changes between:

  • 23 and 24 tasks - (20%),
  • 47 and 48 tasks - (40%),
  • 71 and 72 tasks - (60%),
  • 95 and 96 tasks - (80%),
  • 119 and 120 tasks - (100%).

The RS Server would be updated when a regions task load increments or decrements across these boundaries.

If you specify a value that is at the lower end of the 1-25 scale, then that will cause an increase in the frequency of updates to the RS Server across its task load range. For workloads in QUEUE mode, this will result in a task load more evenly balanced across the CICS regions in the workload target scope (assuming all other health and link factors are equal) . However, the utilization of the RS server will be correspondingly increased, which may consequently result in a higher utilization of your coupling facility.

The value specified here will be applied the next time this CICS region is started. If you want the change to be applied to a running instance of this CICS region, then it may be changed in-flight using the MAS views.

WLM optimization enablement WLMOPTEN This attribute controls the enablement of the optimized dynamic routing function.

When set to ENABLED, the region will attempt to connect to the CICS Region Status server when the CICSplex SM workload management agent starts. If that connection is successful, then the region will be eligible to participate in optimized workload routing requests.

If this attribute is set to DISABLED, then the region will not connect to the Region Status server when it starts, and optimized dynamic workload routing requests will be suppressed.

The setting of this definition may be overridden at run time through the MAS views.

Task load queue mode WLMQMODE This attribute is used by CICSPlex SM Workload Manager. This value specifies how the queued task load of a target CICS region is to be evaluated:
  • MAXTASK - specifies that both active and MAXTASK queued tasks are to be included in the task load evaluation for the region.
  • ALL - specifies that the task load evaluation for the region will include active tasks, tasks queued for the MAXTASK limit and tasks that are queued because of a TRANCLASS limit.

The default value is ALL. Any change to this value will be applied at the next region startup.

Routing region active at startup WLMSTATUS Indicates whether or not this CICS system is to participate in its associated workload as a routing region when the CICS system is started. Options are:
  • YES - The CICS system is to join its associated workload as a routing region at CICS startup.
  • NO - The CICS system will not attempt to act as a routing region at CICS startup.

Use the WLM specifications to CICS systems link (EYUSTARTLNKSWSCS) view, the WLM specifications to CICS system group links (EYUSTARTLNKSWSCG) view, or Workload management Map function to identify the associated workload. If the CICS system is not associated with a workload, it will not be activated as a routing region.

A routing region would normally have this option set to YES. A target region must also have this option set to YES, if it is to receive requests using the CICS distributed routing model (DSRTPGM).

Task load health threshold WLMTHRSH This attribute is used by CICSPlex SM Workload Manager. It specifies a percentage threshold of the current region's task load, which is calculated by dividing the current task count by the maximum task count. When the load for a target region reaches this threshold, then WLM considers the region to be relatively unhealthy. This will cause higher link weights to be applied to the WLM routing algorithm when evaluating this region. When a target scope covers local and remote regions relative to the router, then WLM will favour local targets over remote ones. The effect of this attribute is that when this load threshold in the local regions is achieved, then WLM will start to favour remote targets instead. When all targets in the scope achieve this load threshold, then WLM will revert to favouring local targets again.

The value range is from 1 to 100, and the default value is 60. The value specified here will be applied the next time this CICS region is started.

Note: this value is nullified when applied to the routing factor of link neutral dynamic routing requests. This is because the link weight itself is ignored for the LNQUEUE and LNGOAL algorithms.