The following parameters can be entered using DDCARD input. The PRODUCT parameter is mandatory. All other parameters are optional.
Parameter | Usage |
---|---|
CT | Command timeout limit. |
DSPSCOPE | Specify the type of dataspaces used by Adabas System Coordinator and Adabas Fastpath (z/OS only). |
FORCE | Overwrite ID table entry. |
LOCAL | Define an isolated daemon. |
LU | Length of intermediate user buffer. |
MPMWTO | Display information messages. |
NABS | Number of attached buffers. |
NC | Number of command queue elements. |
NXC | Number of sysplex command queue elements |
PRODUCT | Identify the services to be made available. Mandatory. |
START– Cold start feature | Delete shared memory from previous execution. |
ZIIP | Activate zIIP support for the System Coordinator Daemon. |
Parameter | Use | Mimimum | Maximum | Default |
---|---|---|---|---|
CT | The maximum number of seconds (more precisely, units of 1.048576 seconds) that can elapse from the time a daemon request is completed until the results are retrieved by the sender through the interregion communication. | 1 | 16,777,215 | 60 |
This parameter is used to prevent a request queue element (RQE) and attached buffer from being held indefinitely when a user with an outstanding request terminates abnormally.
Possible causes of a command timeout are
address space is swapped out or cannot be dispatched;
the task is cancelled or ABENDed;
the task has low priority in a high-activity system.
Parameter | Use | Possible Values | Default |
---|---|---|---|
DSPSCOPE | Specify the type of dataspaces used by Adabas System Coordinator and Adabas Fastpath (z/OS only). | ALL | COMMON | COMMON |
For backwards compatibility, the default is
DSPSCOPE=COMMON
. This default allows dataspaces to be
used by all programs in the system and provides a commonly addressable area
similar to the common service area (CSA). However, a future version of z/OS may
disallow this type of dataspace (AllowUserKeyCADS(NO)).
Continued support for dataspaces is provided by the use of
DSPSCOPE=ALL
. This will allow dataspaces to share data
selectively among programs running in multiple address spaces.
This parameter is used by:
The Adabas System Coordinator daemon when it is defined to use a dataspace for its shared memory latency/pulse services (refer to Daemon latency/pulse services).
The Adabas Fastpath buffer when it is defined to use a dataspace (refer to the Dataspace Name Adabas Fastpath buffer parameter).
Possible values:
DSPSCOPE=COMMON
: Allow dataspaces to share
data commonly among all programs in the system.
DSPSCOPE=ALL
: Allow dataspaces to share data
selectively among programs in the system.
The following fixes must be applied and active in all components
(client, daemon, database) across all systems (LPARs) before the use of
DSPSCOPE=ALL
is considered for any daemon within a group
involving those systems
Product | Fix number |
---|---|
Adabas System Coordinator | MI831003, MI831004 |
Adabas Fastpath | AW822058 |
Parameter | Use | Possible Values | Default |
---|---|---|---|
FORCE | Specify whether or not this daemon is to force an entry into the active node list. | YES | NO | NO |
Possible values:
FORCE=YES
: Force an active entry, if one is
available.
FORCE=YES
is usually not required. However, it
may be needed if the previous daemon session ended abnormally, leaving the old
entry in the active node list. Use this setting carefully.
FORCE=NO
: Causes an error if the node used by
this daemon already appears in the active node list.
Parameter | Use | Possible Values | Default |
---|---|---|---|
LOCAL | Specify whether or not a daemon is to be isolated from other Entire Net-Work nodes. | YES | NO | NO |
Possible values:
LOCAL=YES:
Isolates this daemon from other
Entire Net-Work nodes.
LOCAL=NO:
The daemon can receive calls from
other Entire Net-Work nodes.
Parameter | Use | Mimimum | Maximum | Default |
---|---|---|---|---|
LU | Set the size of the intermediate user buffer area. | 4000 | 65,535 | 65,535 |
The size specified must be large enough to accommodate all control information for commands passed to the node.
An error occurs if the LU
parameter specifies a
value greater than the byte count implied by the NAB
parameter. If you change either parameter value, you may have to change them
both.
Parameter | Use | Possible Values | Default |
---|---|---|---|
MPMWTO | Specify whether or not to display information level (l-level) messages. | YES | NO | NO |
By default, information level (I-level) messages are suppressed.
Parameter | Use | Mimimum | Maximum | Default |
---|---|---|---|---|
NABS | Specify the number of attached buffers to be used. | 0 | 500,000 | 16 |
An attached buffer is an internal buffer used for communication with the daemon.
For Adabas System Coordinator, this is an optional parameter that defines the number of attached buffers to be used for receiving requests from clients or from other daemon peers.
An attached buffer pool is allocated with a size equal to the value of
the NABS
parameter multiplied by 4096 bytes.
Parameter | Use | Mimimum | Maximum | Default |
---|---|---|---|---|
NC | Set the maximum number of command queue elements. | 20 | 32,767 | 100 |
The maximum number of command queue elements (CQEs) that can be processed simultaneously by this daemon.
Parameter | Use | Mimimum | Maximum | Default |
---|---|---|---|---|
NXC | Set the maximum number of queue elements in the sysplex messaging command queue. | 1 | 4096 | 256 |
This parameter is used only for multi-system daemons using XCF messaging, or for full Parallel Systems daemons using dynamic transaction routing (DTR). Although the default value will be sufficient for most sites, the number will dynamically expand as required when there is a high volume of XCF messages.
Parameter | Use | Possible Values | Default |
---|---|---|---|
PRODUCT |
Specifies which product services are to be made available by Adabas System Coordinator:
|
AAF |
none |
This parameter is used once for each service that is to be made available by the daemon.
Possible values:
PRODUCT=AAF
:
Enable the daemon services necessary to support Adabas SAF Security for the protection of online administration of COR-based Add-on products.
PRODUCT=AFP
:
Enable the daemon services necessary to support the Adabas Fastpath Asynchronous Buffer Manager. This is mandatory for sites using Adabas Fastpath.
PRODUCT=ATM
:
Enable the daemon services necessary to support Adabas Transaction Manager. This is mandatory for sites using Adabas Transaction Manager.
PRODUCT=AVI
:
Enable the daemon services necessary to support Adabas Vista daemon-managed jobs such as those defined to use activity pulsing or those defined to run in dynamic transaction routing systems (eg. CICS/MRO, CICS/PLEX, IMS and UTM).
PRODUCT=DTR
:
Note:PRODUCT=DTR
previously replaced PRODUCT=CAS
but parameter support for PRODUCT=CAS
has been retained for backward compatibility.
This is an optional dummy parameter used simply to identify that dynamic transaction routing systems (eg. CICS/MRO, CICS/PLEX, IMS and UTM) are being managed by this daemon.
Parameter | Use | Possible Values | Default |
---|---|---|---|
START | Normally, the daemon inherits and reuses shared
memory allocations from a previous execution. Specify
START=COLD to skip this recovery processing.
Note: If there is a risk of daemons unnaturally terminating across an IPL
then |
COLD | none |
Parameter | Use | Possible Values | Default |
---|---|---|---|
ZIIP | Specify whether or not zIIP support is to be activated for this Daemon. | YES | NO | No |
This parameter is valid for z/OS operating environments only.
Possible values:
ZIIP=YES:
zIIP support for the Daemon is activated. The Daemon offloads CPU time from the general processors to System z Integrated Information Processors (zIIP). The purpose of this configuration is to reduce the CPU consumption on the general processors.
ZIIP=NO:
The default setting.
The Daemon runs without the option to offload CPU time to zIIPs.
Note:
The use of ZIIP=YES requires the availability of the Adabas for zIIP
license file (AZPAD). If the AZPAD license file is missing or found invalid,
the Daemon will start but will run as if ZIIP=NO had been specified.
If the Daemon was started with ZIIP=YES, the setting of the ZIIP parameter can be changed at runtime - that is, set to NO and subsequently back to YES - using the ZIIP= command from the operator console. If the Daemon was started with ZIIP=NO, the setting of the ZIIP parameter cannot be changed to YES later in this session.
Refer to Daemon Operator Commands for more information on the ZIIP= operator command.