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Click on the parameter to get more info
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ADARUN
Parm |
Description |
Parm
Influence |
RC |
SC |
Effect, etc. |
| ASYTVS |
Asynchronous Buffer Flush
YES = asynchronously (default)
NO = not asynchronously
ASYTVS=YES in connection with FMXIO>1 (number of parallel I/O operations) by LFIOP flush processing reduces the time for a buffer flush
Important for performance! |
LBP
LP
TFLUSH
LFIOP
FMXIO
FIC |
-- |
-- |
Number and duration of a buffer flush |
| FMXIO |
Parallel LFIOP I/O Operations
The maximum number of parallel I/O operations by LFIOP flush processing
Values 1 - 16
Important for performance! |
LBP
LP
TFLUSH
ASYTVS
FIC |
-- |
-- |
Fewer and faster buffer flushes, more I/Os per disk |
| LBP |
Length of Buffer Pool
Used to store ASSO and DATA blocks for processing.
In 31-bit mode (EXCPVR), the buffer pool is automatically allocated above the 16-megabyte line
64-bit mode is also possible: "EXCPVR is being used for this run in ESA64 mode"
Most important for performance! |
LP
TFLUSH
LFIOP |
87
97
160
161
162
163
170 |
-- |
low values = poor buffer efficiency, more physical ASSO and DATA I/Os, more buffer flushes
high values = increased paging
Parm error 12
Parm error 71 |
| LCP |
Lenght of Security Pool
Security pool for ADASEC
Important for performance! |
LP
-- |
204 |
-- |
Access to security file |
| LDEUQP |
Length of Unique Descriptor Pool
The unique descriptor (UQ) pool (value + 11 bytes) should hold all UQ descriptors that are being changed by all transactions
Checks whether UQ DE value exist |
-- |
197
198 |
-- |
-- |
| LDTP |
Length of Distributed Transaction Processing Area (Work part 4)
For use with DTP=RM (resource manager) |
DTP=RM
LP |
17 |
4 |
-- |
| LFIOP |
Asynchronous Buffer Pool Control
Asynchronous buffer flush I/O pool for
Keep it small, approx. 25-40% of LBP
0=synchronous BF
1=25% of LBP
n=user defined
In 31-bit mode (EXCPVR), the work pool is automatically allocated above the 16-megabyte line
64-bit mode is also possible: "EXCPVR is being used for this run in ESA64 mode"
Important for performance! |
LBP
LP
TFLUSH
FIC |
8 |
-- |
high values = wait time, high channel and disk load |
| LFP |
Length of Internal Format Buffer Pool
In 31-bit mode (EXCPVR), the format pool is automatically allocated above the 16-megabyte line
64-bit mode is also possible: "EXCPVR is being used for this run in ESA64 mode"
Since ADA7, HWM are always close to 100%
Still sequential searching
Important for performance! |
-- |
42
45 |
--
-- |
low values = format overwrites
Parm error 13 |
| LI |
Length of Tables of ISNs (TBI)
Store ISN lists (overflow ISNs or saved ISN lists), which are identified by a CID and system UID
LI=(# TBI-elements, limited by NQCID) * (size TBI element)
Max size see NSISN
Important for performance! |
NSISN
NQCID |
71 |
-- |
Parm error 10 |
| LOCAL |
Local Nucleus
YES=Isolated
NO=Calls from Entire Net-Work nodes are available |
-- |
-- |
-- |
Parm error 74 |
| LOGGING |
Command Logging Control
Command logging for the Adabas session. UEX4 needs LOGGING=YES |
CL
DUALCLD
DUALCLS
LOGCB
LOGCLEX
LOGFB
LOGIB
LOGIO
LOGRB
LOGSB
LOGUX
LOGVB
LOGSIZE
UEX4
|
-- |
-- |
Active logging (dual or single) can cause performance problems. I/Os are not done by a subtask |
| LOGSIZE |
Maximum Command Logging Size
The maximum blocksize for the sequential command log
Default value of QBLKSIZE |
LOGGING
QBLKSIZE
|
-- |
-- |
Active sequential logging causes performance problems. I/Os are not done by a subtask. Tape mount or full disk will lock the nucleus. |
| LP |
Length of Data Protection Area (Work Part 1)
Specifies the number of blocks to allocate to the Work data protecxtion area (part 1 of 4).
Changes of LP will be automatically detected during autorestart
Important for performance! |
LBP
TFLUSH
LFIOP
TT
LWKP2
WORK-3
WORK-4
FIC
|
9
95
8 |
15
--
-- |
low values = high number of buffer flushes
high values = probably not used
Parm errors 17, 18 |
| LQ |
Length of Sequential Command Table
Specifies the number of bytes for the TBQ elements for read sequences:
physical = 56 bytes
logical = 86 bytes + length compr. DE value
max. length 68 + 253 = 331 bytes x possible CIDs
ADA74: TBQ element = approx. 120 bytes (?)
|
NQCID |
70 |
-- |
Parm error 11 |
| LWP |
Work Pool, contains of:
- Sort area
- Intermediate UB
- DVT (32KB)
- Temp. transl. int.
formats (32KB)
- I/O areas, WORK2/3
- LOGIO of CLOG
In 31-bit mode (EXCPVR), the work pool is automatically allocated above the 16-megabyte line
64-bit mode is also possible: "EXCPVR is being used for this run in ESA64 mode"
Important for performance! |
LS
LU
--
--
--
--
LOGIO
LOGGING
PREFE |
164
1
152
--
--
45
--
88 |
--
3
--
--
--
--
--
1 |
low values = throw backs, WORK2 I/Os, no selection of CQ, ENQ time, ECBs
Parm errors 14, 16, 39, 67 |
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