This document describes how to set Adabas session parameters on the ADARUN control statement. The information is organized as follows:
Use the following guidelines when setting the various Adabas session parameters:
Ensure that the following are specified correctly:
program to be executed (see PROGRAM parameter).
mode of operation (MODE parameter).
database ID (see DBID parameter).
If the session is to be restricted to read only (no updating permitted), use the READONLY parameter.
If the session is to be restricted to Adabas utilities only, use the UTIONLY parameter.
Review buffer and table sizes to be in effect for the session:
| Parameter | Description |
|---|---|
| ASYTVS, LFIOP, TFLUSH | Buffer flush control |
| LBP | Length of the buffer pool |
| LCP | Length of security pool |
| LDEUQP | Length of unique (UQ) descriptor pool |
| LDTP |
If you have Adabas Transaction Manager installed, this parameter defines the size (in blocks) of the WORK4 index which is used to administer the data on DDWORKR4. |
| LFP | Length of internal format buffer pool |
| LI | Length of table for ISN lists |
| LP | Length of data protection area (Work part 1) |
| LQ | Length of table of sequential commands |
| LRDP | Length of the cluster redo pool |
| LS | Length of sort area |
| LU | Length of intermediate user buffer |
| LWKP2 | Length of Work part 2 |
| LWP | Length of Adabas work pool |
| MSGBUF | Length of message buffer for use with SMGT=YES |
| NAB | Number of attached buffers |
| NC | Number of elements in command queue |
| NH | Number of elements in hold queue |
| NISNHQ | Maximum number of records in hold queue per user |
| NQCID | Maximum number of active command IDs per user |
| NSISN | Maximum number of ISNs per TBI element |
| NT | Number of threads |
| NU | Number of elements in user queue |
Review the time limits to be in effect for the session:
| Parameter | Description |
|---|---|
| CT | Command timeout limit |
| MXTNA | Maximum inactivity limit using OP command for individual user |
| MXTSX | Maximum execution limit for Sx command for individual user |
| MXTT | Maximum transaction time limit using OP command for individual user |
| TLSCMD | Sx command time limit |
| TNAA | Inactivity limit for access only users |
| TNAE | Inactivity limit for ET logic users |
| TNAX | Inactivity limit for EXU users |
| TT | Transaction time limit |
If dual protection logging is to be used, the DUALPLD and DUALPLS parameters apply.
If multiple (2-8) protection log data sets are to be used, the NPLOG, PLOGDEV, and PLOGSIZE parameters apply.
If command logging is to be used, the following parameters are applicable:
CLOGMAX
CLOGBMAX
CLOGLAYOUT
LOGGING
LOGABDX, LOGCB, LOGCLEX, LOGFB, LOGIB, LOGIO, LOGMB, LOGRB, LOGSB, LOGUB,
LOGUX, LOGVB
If a sequential command log is to be used, the LOGGING parameter applies.
If dual command log data sets are to be used, the DUALCLD and DUALCLS parameters apply.
If multiple (2-8) command log data sets are to be used, the NCLOG, CLOGDEV, and CLOGSIZE parameters apply.
If the multifetch or prefetch feature is to be used, the following parameters are applicable:
PREFETCH
PREFICMD
PREFIFIL
PREFNREC
PREFSBL
PREFTBL
PREFXCMD
PREFXFIL
Determine if any of the following user exits are to be activated:
| User Exit | Description |
|---|---|
| CDXnn | Collation (sort) descriptor processing |
| DSFEX1 | Delta Save Facility user exit for use with DSF=YES |
| HEXnn | User hyperdescriptor processing |
| UEX1 | User processing before command execution (retired) |
| UEX2 | Dual log copy |
| UEX3 | User phonetic processing |
| UEX4 | User processing after command processing and before command logging |
| UEX5 | Adabas Review hub event handler |
| UEX6 | User processing before data compression |
| UEX8 | Message/utility user processing |
| UEX9 | User processing during file unload |
| UEX11 | User processing before command execution |
| UEX12 | Multiple log data set copy |
Enable the nucleus to run with specific subsystems and associated products or in certain environments:
| Parameter | Description |
|---|---|
| CACHE | Adabas Caching Facility (ACF) |
| CLUSTER | Adabas cluster nucleus session control (ALS or ASM) |
| DSF | Adabas Delta Save Facility Facility (ADE) |
| DTP | Enable the nucleus for distributed transaction processing as a resource or transaction manager (ATM) |
| FASTPATH | Adabas Fastpath (AFP) |
| REVIEW | Adabas Review (REV) |
| SMGT | Enhanced error handling (PINs) and message buffering subsystem |
| STP | Triggers and Stored Procedures Facility |
| VISTA | Adabas Vista (AVI) |
If CLUSTER is either LOCAL or SYSPLEX, determine the cluster environment settings:
| Parameter | Description |
|---|---|
| CLOGMRG | Merge cluster command logs automatically |
| CLUCACHENAME | Custer cache structure/area name |
| CLUCACHESIZE | Parallel cluster global cache area size |
| CLUCACHETYPE | Parallel cluster global cache area construct type |
| CLUGROUPNAME | Cluster name |
| CLULOCKNAME | Custer lock structure/area name |
| CLULOCKSIZE | Parallel cluster global lock area size |
| DIRRATIO/ELEMENTRATIO | Together define the ratio of directory entries to data elements |
| LRDP | Length of the cluster redo pool |
| MXCANCEL | Time limit for a canceled peer nucleus to terminate |
| MXMSG | Time limit for an inter-nucleus command to be processed |
| NUCID | Cluster nucleus ID |
Determine the status of the nucleus in a network:
| Parameter | Description |
|---|---|
| LOCAL | Enable nucleus for network connections |
| TCPIP | TCP/IP direct link to the nucleus |
| TCPURL | Identify the location of the TCP/IP link |
Determine if any of the following parameters are applicable for the session:
| Parameter | Description |
|---|---|
| DEVICE | Device type for first block of Associator |
| FORCE | Ignore active database ID setting in the ID table |
| IGNDIB | Ignore active nucleus entry in data integrity block (DIB) |
| IGNDTP | Ignore data in Work part 4 on startup for use with DTP=RM |
| NONDES | Non-descriptor searches |
| OPENRQ | Open command required |
| PLOGRQ | Selective/normal protection log required |
| QBLKSIZE | Sequential block size |
When performing an autorestart following an abend, use the optional AREXCLUDE parameter to exclude any problem files from processing.
The Adabas session statistics are printed automatically at the end of a session and may be displayed during the session. These statistics can help you determine the optimum settings for each parameter. Adabas Online System may also be used to obtain session statistics.