About ADARUN Parameters for Cluster Nuclei

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# About ADARUN Parameters for Cluster Nuclei

We recommend that you use your existing values (or the default settings) of the Adabas ADARUN parameters for each Adabas nucleus in a cluster, and then tune the values after analyzing the performance of the cluster. For more information about expected differences, read Performance and Tuning.

Session statistics can be used to determine the best settings for each parameter. The statistics are printed automatically at the end of a session, but can also be displayed using nucleus or ADACOM operator commands during the session.

For your convenience, ADARUN parameters that are most significant to Adabas Cluster Services usage are described in Useful ADARUN Parameters.

This document covers the following topics:

- Global ADARUN Parameters

- ADARUN Parameter Usage in Cluster Environments

- Useful ADARUN Parameters for Adabas Cluster Services

## Global ADARUN Parameters

ADARUN parameters that must be the same for all nuclei in the cluster are called global.

Some global parameters are set at nucleus startup and cannot be changed during the ensuing session; other global parameters can be changed during a session:

- When you set a value for a global parameter that cannot be changed after the first nucleus in an Adabas cluster has started, intracluster messages are used to communicate the ADARUN parameter settings of the first nucleus to all subsequent cluster nuclei. Each subsequent nucleus receives this information during initialization and determines whether its global nonchangeable parameters are equal to those of the first nucleus.

  If they are not equal, the nucleus fails with a parameter error. The nonequal global changeable parameters are reset to the value retrieved from the intracluster messages and a corresponding message is printed.

- If you change the value of a global parameter that can be changed during a running session, the nucleus on which you make the change acquires a "parameter change lock", makes the changes in its local parameter area, and communicates the changes to the other cluster nuclei using intracluster messages.

  All other nuclei in the cluster receive the intracluster messages containing the global parameters that have changed, change the parameters in their local parameter area, and send an "acknowledge" message.

## ADARUN Parameter Usage in Cluster Environments

A cluster nucleus makes use of:

- global parameters, whose values are enforced by Adabas Cluster Services to be equal for all nuclei in a cluster. Some of these parameters can be modified (globally modifiable) during a session using an operator command or the Adabas Online System (NISNHQ, NONDES, and AOSLOG are only modifiable using AOS); others are fixed (globally fixed) and cannot be modified while the nuclei in the cluster are running.

- local parameters, which can be different for each nucleus. Some of these parameters are modifiable (locally modifiable) using an operator command or the Adabas Online System; others are fixed (locally fixed) and cannot be modified.

A few Adabas ADARUN parameters are not available to a cluster nuclei (No).

In the following table, the "N/A" column indicates which ADARUN parameters are not available to a cluster nucleus, the "LF" column indicates whether the parameter is a locally fixed parameter, the "LM" column indicates whether the parameter is a locally modifiable parameter, the "GF" column indicates whether the parameter is a globally fixed parameter, and the "GM" column indicates whether the parameter is a globally modifiable parameter.

Note
The parameters for which links are provided have particular use in Adabas Cluster Services environments and are described in Useful ADARUN Parameters for Adabas Cluster Services. A description of every ADARUN parameter (including those not described in the Adabas Cluster Services documentation) can be found in the Adabas mainframe operations documentation.

Parameter | Usage | N/A | LF | LM | GF | GM
--- | --- | --- | --- | --- | --- | ---
AOSLOG | Log to DDPRINT commands issued by AOS or ADADBS OPERCOM that modify the active nucleus |  |  | LM |  |
AREXCLUDE | Exclude file(s) from autorestart |  | LF |  |  |
ARMNAME | Name used to activate ARM |  | LF |  |  |
ARNWORKBUFFERS | Number of work buffers allocated during autorestart processing. |  | LF |  |  |
ASSOCACHE | Controller caching control for the Associator component |  | LF |  |  |
ASSOSPACEWARN | Associator space notifications |  |  |  |  | GM
ASYTVS | Asynchronous buffer flush based on volser |  |  | LM |  |
AUTOCQENV | Type of user affected by the AUTOCQTIME parameter setting |  | LF |  |  |
AUTOCQTIME | Maximum wait time for commands in the command queue during online recovery |  | LF |  |  |
AUTOINCASSOSIZE | Associator automatic database increase size |  |  |  |  | GM
AUTOINCASSOTHRESHOLD | Associator space threshold size |  |  |  |  | GM
AUTOINCASSOTOTAL | Associator space maximum size |  |  |  |  | GM
AUTOINCDATASIZE | Data Storage automatic database increase size |  |  |  |  | GM
AUTOINCDATATHRESHOLD | Data Storage space threshold size |  |  |  |  | GM
AUTOINCDATATOTAL | Data Storage space maximum size |  |  |  |  | GM
CACHE | Load ADACSH (Adabas Caching Facility) |  | LF |  |  |
CACTIVATE | RABN range activation (Adabas Caching Facility) |  |  | LM |  |
CASSODSP | Associator RABNs cached for data space (Adabas Caching Facility) |  |  | LM |  |
CASSOEXT | Associator RABNs cached for extended memory (Adabas Caching Facility) |  |  | LM |  |
CASSOG64 | Cache an Associator RABN or RABN range backed by 2G large pages in the virtual 64-bit storage cache. |  |  | LM |  |
CASSOHSP | Associator RABNs cached for hiperspace (Adabas Caching Facility) |  |  | LM |  |
CASSOL64 | Cache an Associator RABN or RABN range backed by 1M large pages in the virtual 64-bit storage cache. |  |  | LM |  |
CASSOV64 | Associator RABNs cached for virtual 64 (Adabas Caching Facility) |  |  | LM |  |
CASSOMAXS | Associator cache space unit size (Adabas Caching Facility) |  |  | LM |  |
CBUFNO | Read buffer count for concurrent I/O (Adabas Caching Facility) |  |  | LM |  |
CCTIMEOUT | Cache space area inactivity time (Adabas Caching Facility) |  |  | LM |  |
CDATADSP | Data Storage RABNs cached for data space (Adabas Caching Facility) |  |  | LM |  |
CDATAEXT | Data Storage RABNs cached for extended memory (Adabas Caching Facility) |  |  | LM |  |
CDATAG64 | Cache a Data Storage RABN or RABN range backed by 2G large pages in the virtual 64-bit storage cache. |  |  | LM |  |
CDATAHSP | Data Storage RABNs cached for hiperspace (Adabas Caching Facility) |  |  | LM |  |
CDATAL64 | Cache a Data Storage RABN or RABN range backed by 1M large pages in the virtual 64-bit storage cache. |  |  | LM |  |
CDATAV64 | Data Storage RABNs cached for virtual 64 (Adabas Caching Facility) |  |  | LM |  |
CDATAMAXS | Data Storage cache space unit size (Adabas Caching Facility) |  |  | LM |  |
CDEMAND | Lowest acceptable Adabas buffer efficiency level (Adabas Caching Facility) |  |  | LM |  |
CDISPSTAT | RABN range statistic display location (Adabas Caching Facility) |  |  | LM |  |
CDXnn | Collation descriptor user exit(s) |  | LF |  |  |
CEXCLUDE | Excluded command types (Adabas Caching Facility) |  |  | LM |  |
CFILE | File or file range to be cached (Adabas Caching Facility) |  |  | LM |  |
CLOGBMAX | Maximum size of a log buffer |  | LF |  |  |
CLOGDEV | Multiple command log device |  | LF |  |  |
CLOGLAYOUT | Define command log format |  |  |  | GF |
CLOGMAX | Maximum size of all logged buffers allowed for an Adabas command. |  | LF |  |  |
CLOGMRG | Automatic command log merge control in a cluster environment |  |  |  |  | GM
CLOGSIZE | Multiple command log size (blocks) |  | LF |  |  |
`CLUCHACHEEXTRA` | The additional vector size, in blocks, required to allow Adabas Cluster Services and Adabas Parallel Services to track the blocks held by Adabas Caching Facility in the different cluster nuclei. |  | LF |  |  |
CLUCACHENAME | Cluster cache structure name (Adabas Cluster Services only) |  |  |  | GF |
CLUCACHESIZE | Cluster cache area size (Adabas Parallel Services only) |  |  |  | GF |
CLUCACHETYPE | Cluster cache area storage type (Adabas Parallel Services only) |  |  |  | GF |
CLUCACHEUNCHANGED | Shared cache unchanged block control (Adabas Parallel Services only) |  | LF |  |  |
CLUGROUPNAME | Cluster group name (Adabas Cluster Services only) |  |  |  | GF |
CLULOCKNAME | Cluster lock structure name (Adabas Cluster Services only) |  |  |  | GF |
CLULOCKSIZE | Cluster lock area size (Adabas Parallel Services only) |  |  |  | GF |
CLUPUBLPROT | Cluster publishing of protection data |  |  |  |  | GM
CLUSTER | Adabas cluster session control |  |  |  | GF |
CLUWORK1CACHE | Cluster number of WORK blocks in global cache |  | LF |  |  |
CMADDR | Starting address of the GETMAIN common memory pool above the 16M line |  | LF |  |  |
CMAXCSPS | Storage area count for ADACSH (Adabas Caching Facility) |  |  | LM |  |
CMDQMODE | Command queue memory pool location |  | LF |  |  |
CMFIX | GETMAIN common memory pool fixed location indicator above the 16M line |  | LF |  |  |
CMLADDR | Starting address of the GETMAIN common memory pool below the 16M line |  | LF |  |  |
CMLFIX | GETMAIN common memory pool fixed location indicator below the 16M line |  | LF |  |  |
CMLSCOPE | Control for access to the GETMAIN common memory pool below the 16M line |  | LF |  |  |
CMLSIZE | Indicator for GETMAIN performance in common memory pool below the 16M line |  | LF |  |  |
CMSCOPE | Control for access to the GETMAIN common memory pool above the 16M line |  | LF |  |  |
CMSIZE | Indicator for GETMAIN performance in common memory pool above the 16M line |  | LF |  |  |
CRETRY | Cache space retry interval (Adabas Caching Facility) |  |  | LM |  |
CSTORAGE | RABN caching activation (Adabas Caching Facility) |  | LF |  |  |
CT | Command time limit (seconds) |  |  |  |  | GM
CWORKSTORAGE | Cache space type (Adabas Caching Facility) |  |  | LM |  |
CWORK2FAC | Percentage of Work part 2 cached (Adabas Caching Facility) |  |  | LM |  |
CWOFK3FAC | Percentage of Work part 3 cached (Adabas Caching Facility) |  |  | LM |  |
CXFILE | Excluded files (Adabas Caching Facility) |  |  | LM |  |
DATACACHE | Controller caching control for the Data Storage component |  | LF |  |  |
DATASPACEWARN | Data Storage space notifications |  |  |  |  | GM
DBID | Database ID (physical) |  |  |  | GF |
DEVICE | Device type of the first ASSO extent |  |  |  | GF |
DIRRATIO | Ratio of directory entries to data elements in a cluster cache structure/area |  |  |  |  | GM
DSF | Delta Save Facility control |  |  |  | GF |
DSFEX1 | Delta Save Facility user exit |  | LF |  |  |
DTP1 | Distributed transaction processing control |  |  |  | GF |
DUALCLD | Dual command log device |  | LF |  |  |
DUALCLS | Dual command log size (blocks) |  | LF |  |  |
DUALPLD | Dual protection log device |  | LF |  |  |
DUALPLS | Dual protection log size (blocks) |  | LF |  |  |
ELEMENTRATIO | Ratio of directory entries to data elements in a cluster cache structure/area |  |  |  |  | GM
ENCRYPTION | Indicate whether or not to activate Adabas Encryption |  | LF |  |  |
EXCPVR | EXCP or EXCPVR indicator when APF-authorized |  | LF |  |  |
FASTPATH | Adabas Fastpath control |  |  |  | GF |
FMXIO | Limit parallel I/O operations by LFIOP flush processing |  |  | LM |  |
FORCE | Overwrite IDTE |  | LF |  |  |
HEXnn | Hyperdescriptor exit(s) |  | LF |  |  |
IDTNAME | Name for alternate ID table |  | LF |  |  |
IDTPSUP | IDT name suppression indicator |  | LF |  |  |
IGNDIB | Ignore DIB entry |  | LF |  |  |
IGNDTP | Ignore distributed transaction processing area (Work part 4) |  | LF |  |  |
INFOBUFFERSIZE | Size of information buffer pool |  | LF |  |  |
INTAUTO | The time interval (in seconds) between autorestart progress messages. |  | LF |  |  |
INTNAS | Interval between nucleus statistic checkpoints (SYNS 60) |  |  |  |  | GM
LARGEPAGE | Large page use indicator |  | LF |  |  |
LBP | Length of buffer pool |  | LF |  |  |
LCP | Length of security pool |  | LF |  |  |
LDEUQP | Length of unique (UQ) descriptor pool |  | LF |  |  |
LDTP | Length of distributed transaction processing area (Work part 4) |  | LF |  |  |
LFIOP2 | Length of asynchronous flush pool |  | LF |  |  |
LFP | Length of internal format buffer pool |  | LF |  |  |
LI | Length of ISN list table (TBI) |  | LF |  |  |
LNKGNAME | Link globals table name |  | LF |  |  |
LOCAL3 | Nucleus (cluster) unreachable to the network |  |  |  | GF |
LOGABDX | Log ABDs |  | LF |  |  |
LOGCB | Log control block |  |  | LM |  |
LOGCLEX | Log command log extension (CLEX) |  | LF |  |  |
LOGFB | Log format buffer |  |  | LM |  |
LOGGING | Logging of Adabas commands |  |  | LM |  |
LOGIB | Log ISN buffer |  |  | LM |  |
LOGIO | Log I/O activity |  |  | LM |  |
LOGMB | Log multifetch buffers |  | LF |  |  |
LOGRB | Log record buffer |  |  | LM |  |
LOGSB | Log search buffer |  |  | LM |  |
LOGSIZE | Maximum command log size |  | LF |  |  |
LOGUX | Log user exit B data |  |  | LM |  |
LOGVB | Log value buffer |  |  | LM |  |
LOGVOLIO | Extended I/O list log indicator |  |  | LM |  |
LOGWARN | PLOG/CLOG status check frequency |  |  | LM |  |
LP | Length of data protection area (Work part 1) |  | LF |  |  |
LQ | Length of sequential command table |  | LF |  |  |
LRDP | Length of the redo pool in cluster environments. |  | LF |  |  |
LRPL | Size of Adabas or Event Replicator replication pools |  | LF |  |  |
LS | Length of sort area |  |  | LM |  |
LTZ | The size of the time zone pool used by a user session. |  | LF |  |  |
LU | Length of intermediate user buffer |  |  |  |  | GM
LWKP2 | Length of ISN list processing area (Work part 2) |  | LF |  |  |
LWP | Length of Adabas work pool Note Please refer to Online Recovery in the Operations documentation for recommendations concerning the LWP formula. |  | LF |  |  |
MLWTO | Whether multi-line messages that are normally written to the operator console as a series of single-line write-to-operator (WTO) messages should instead appear as multi-line WTO messages. |  | LF |  |  |
MODE2 | Mode of operation |  |  |  | GF |
MSGBUF | Size of the message buffer |  | LF |  |  |
MSGCONSL | Case of messages on message console |  | LF |  |  |
MSGDRUCK | Case of messages in DDDRUCK data set |  | LF |  |  |
MSGPRINT | Case of messages sent to DDPRINT data set |  | LF |  |  |
MXCANCEL | Timeout threshold for a cancel request between cluster nuclei(Adabas Cluster Services and Adabas Parallel Services) |  |  | LM |  |
MXCANCELWARN | Timeout threshold for a cancel request warning between cluster nuclei (Adabas Cluster Services and Adabas Parallel Services) |  |  | LM |  |
MXMSG | Maximum message reply time between cluster nuclei (Adabas Cluster Services and Adabas Parallel Services) |  |  | LM |  |
MXMSGWARN | Timeout threshold for a message reply warning between cluster nuclei (Adabas Cluster Services and Adabas Parallel Services) |  |  | LM |  |
MXSTATUS | XCF status monitoring heartbeat interval (Adabas Cluster Services) |  |  | LM |  |
MXTNA | Maximum inactivity time limit override for a user |  |  |  |  | GM
MXTSX | Maximum Sx execution time limit override for a user |  |  |  |  | GM
MXTT | Maximum transaction time limit override for a user |  |  |  |  | GM
MXWTOR | Self-termination query operator response interval (Adabas Cluster Services and Adabas Parallel Services) |  |  | LM |  |
NAB | Number of attached buffers |  | LF |  |  |
NC | Number of command queue elements |  | LF |  |  |
NCLOG | Number of command logs |  | LF |  |  |
NH | Number of hold queue elements |  | LF |  |  |
NISNHQ | Number of ISNs in hold queue for user |  |  |  |  | GM
NONDES | Non-descriptor searches |  |  |  |  | GM
NPLOG | Number of protection logs |  | LF |  |  |
NPLOGBUFFERS | Number of PLOG protection I/O buffers |  | LF |  |  |
NQCID | Number of active command IDs per user |  |  |  |  | GM
NSISN | Number of ISNs per ISN table element |  |  | LM |  |
NT | Number of threads |  | LF |  |  |
NU | Number of user queue elements |  | LF |  |  |
NUCID | Cluster nucleus ID |  | LF |  |  |
NWORK1BUFFERS | Number of Work part 1 protection I/O buffers |  | LF |  |  |
OPENRQ | Open command required |  |  |  | GF |
PGFIX | I/O control block page request indicator |  | LF |  |  |
PLOGDEV | Multiple protection log device |  | LF |  |  |
PLOGRQ | Protection log required |  |  |  | GF |
PLOGSIZE | Multiple protection log size (blocks) |  | LF |  |  |
PREFETCH4 | Prefetch/multifetch feature control (see note below) | N/A |  |  |  |
PREFICMD4 | Include command from prefetch/multifetch (see note below) | N/A |  |  |  |
PREFIFIL4 | Include file from prefetch/multifetch (see note below) | N/A |  |  |  |
PREFNREC4 | Multifetch record count (see note below) | N/A |  |  |  |
PREFSBL4 | Prefetch single buffer length (see note below) | N/A |  |  |  |
PREFSTDD4 | Job statement label for location for multifetch statistics | N/A |  |  |  |
PREFTBL4 | Prefetch total buffer length (see note below) | N/A |  |  |  |
PREFXCMD4 | Exclude command from prefetch/multifetch (see note below) | N/A |  |  |  |
PREFXFIL4 | Exclude file from prefetch/multifetch (see note below) | N/A |  |  |  |
PROGRAM | The program to be run |  | LF |  |  |
QBLKSIZE | Sequential data set block size (optimized by ADAIOR) |  | LF |  |  |
READONLY2 | Read-only session control |  |  | LM |  |
REFSTPRT | Whether statistics should be printed after they are refreshed |  | LF |  |  |
REPLICATION | Replication indicator |  |  |  | GF |
REVFILTER | Adabas Review record filtering indicator |  | LF |  |  |
REVIEW | Adabas Review control |  |  | LM |  |
REVLOGBMAX | Maximum number of bytes of a logged buffer for Adabas Review |  | LF |  |  |
REVLOGMAX | Maximum size of all logged buffers for an Adabas Review command |  | LF |  |  |
RIAFTERUPDATE | Control RI command behavior |  |  |  | GF |
RPLCONNECTCOUNT | Number of connection attempts for replication |  | LF |  |  |
RPLCONNECTINTERVAL | Connection attempt interval for replication |  | LF |  |  |
RPLPARMS | Location of replication definitions |  | LF |  |  |
RPLSORT | Replication transaction data sorting indicator |  |  |  | GF |
RPWARNINCREMENT | Replication pool usage warning message interval |  | LF |  |  |
RPWARNINTERVAL | Replication pool usage warning message suppression interval |  | LF |  |  |
RPWARNMESSAGELIMIT | Replication pool usage warning message limit before suppression |  | LF |  |  |
RPWARNPERCENT | Replication pool usage threshold |  | LF |  |  |
SECUID | Security system user ID requirement level |  |  |  |  | GM
SMF | Adabas SMF recording control |  | LF |  |  |
SMF89 | Type 89 SMF record control |  | LF |  |  |
SMFDETAIL | SMF record detail section control |  |  | LM |  |
SMFINTERVAL | SMF interval record control |  |  | LM |  |
SMFRECNO | SMF user-defined record number control |  |  | LM |  |
SMFSUBSYS | IBM or user-defined SMF subsystem control |  |  | LM |  |
SMGT | Error handling (PIN) facility control |  | LF |  |  |
SORTCACHE | Controller caching control for the Adabas sort area component |  | LF |  |  |
SPT | Adabas triggers and stored procedures control |  |  |  | GF |
SRLOG | Spanned record logging control |  | LF |  |  |
SUBMPSZ | Common memory pool size |  | LF |  |  |
SVC | SVC number |  | LF |  |  |
TAPEREL | End-of-file processing for tapes or cartridges |  | LF |  |  |
TARGETID | Unique Entire Net-Work target ID |  | LF |  |  |
TCPIP | TCP/IP access control |  |  | LM |  |
TCPURL | TCP/IP universal resource locator (URL) |  |  | LM |  |
TEMPCACHE | Controller caching for the Adabas temp area component |  | LF |  |  |
TFLUSH2 | Synchronous buffer flush time |  |  | LM |  |
TLSCMD | Time limit for S1, S2, and S4 complex searches (seconds) |  |  |  |  | GM
TMDRQ3 | Number of entries in Adabas Transaction Manager internal request queue |  | LF |  |  |
TMETDATA3 | Databases storing Adabas Transaction Manager ET data |  | LF |  |  |
TMGTT3 | Time limit in which an Adabas Transaction Manager global transaction can be opened without being prepared |  | LF |  |  |
TMLOG3 | Logging option for Adabas Transaction Manager |  |  | LM |  |
TMMSGSEV3 | Severity threshold for suppression of Adabas Transaction manager warning messages |  | LF |  |  |
TMRESTART3 | Adabas Transaction Manager problematic transaction restart handling |  | LF |  |  |
TMSYNCMGR3 | Indicator for Adabas Transaction Manager interaction with external transaction coordinator |  | LF |  |  |
TMTCIDPREF3 | Adabas Transaction Manager prefix for dynamically allocated client IDs |  | LF |  |  |
TNAA | Non-activity time limit (access-only users) |  |  |  |  | GM
TNAE | Non-activity time limit (ET logic users) |  |  |  |  | GM
TNAX | Non-activity time limit (exclusive update users) |  |  |  |  | GM
TT | Transaction time limit |  |  |  |  | GM
UEXnn | User exits: 1, 3, 4, 5, 8 |  | LF |  |  |
User exits: 2, 12 |  |  |  | GF |
User exits: 6, 9 (for utilities) | N/A |  |  |  |
UEXSMF | SMF user exit module name |  | LF |  |  |
UTIONLY | Utilities-only session |  |  |  | GF |
V64BIT | Virtual storage above the 2G bar usage indicator |  | LF |  |  |
VISTA | Adabas Vista control |  |  |  | GF |
WORKCACHE | Controller caching for the Adabas work area component |  | LF |  |  |

Notes:

1. Adabas Cluster Services and Adabas Parallel Services do not support DTP=TM, but it does support DTP=RM.
2. Adabas Cluster Services and Adabas Parallel Services do not support LFIOP=0, MODE=SINGLE, READONLY=YES, or TFLUSH.
3. Adabas Cluster Services and Adabas Parallel Services do not support the LOCAL=YES and all TM*parameters
4. The PREFxxx parameters are used with application programs (PROGRAM=USER) making Adabas calls. They have no effect when specified for an Adabas nucleus.

### On this page

- Global ADARUN Parameters
- ADARUN Parameter Usage in Cluster Environments