change: OFFLINE
Size of the segments in which the log is saved and threshold value
which causes the logs to be saved with automatic log backup.
The lower and upper limits:
LogIOClusterSize * 3 <= AutoLogBackupSize < LogVolumeSize*
If no log segment size has been defined, 1/3 log is considered a log segment.
(4 bytes integer)
change: OFFLINE
The value specifies the i/o capable memory used by different
MaxDB components in particular the data cache, converter and
the shared catalog cache.
Use the database monitoring to obtain information about the data cache
hit rate and the performance of the system.
The lower and upper limits are:
800 <= CacheMemorySize < total RAM size
(4 bytes integer)
default: 250000
change: OFFLINE
new in 7.9.10.00
Initial number of lock list entries in which the current and requested row and table locks for all users are held. Specification depends on the used application, the number of users, and the isolation level. Use the database monitoring to obtain information about the number of Max. Entries, Escalations, and Average Used Entries. The lower limits are: InitialSQLLocks >= 500 AND/OR InitialSQLLocks >= (((TransactionLockManagementStripes + TableLockManagementStripes + RowLockManagementStripes) * 100) DIV 3 There should be at least 10 row locks per transaction (4 bytes integer)
default: 2
change: OFFLINE
Maximum number of backup devices (e.g. tape drives) used in parallel
for backup/recovery
The lower and upper limits are:
1 <= MaxBackupMedia <= 32
(2 bytes integer)
default: 1
change: OFFLINE
The value of MaxCPUs has a great influence on the distribution of the database kernel tasks to operating system threads (UKTs). The parameter defines the maximum of CPU-Cores that are occupied by the operating system threads (UKTs) that are generating the main load. If the computer is used as database server exclusively, MaxCPUs should correspond to the actual number of CPU-Cores of the machine. Otherwise reduce the value by the number of CPU-Cores occupied by other applications. The lower and upper limits are: 1 <= MaxCPUs ( MaxCPUs <= actual number of CPU-Cores ) (2 bytes integer)
default: 1
change: OFFLINE
Maximum number of data volumes
Allow for a reserve number of volumes which enables you to add
volumes during database operation.
The lower and upper limits are:
11 <= MaxDataVolumes < POWER( 2, ConverterVolumeIdLayout )
(2 bytes integer)
default: 1
change: OFFLINE
Maximum number of log volumes,
mirrored log volumes are not included.
Allow for a reserve number of volumes which enables you to add
volumes during database operation.
The lower and upper limits are:
1 <= MaxLogVolumes <= 32
(2 bytes integer)
default: 5000000
change: RUNNING
Maximum number of lock list entries in which the current and requested
row and table locks for all users are held.
Specification depends on the used application, the number of
users, and the isolation level.
Use the database monitoring to obtain information about the number
of Max. Entries, Escalations, and Average Used Entries.
The lower limits are:
MaxSQLLocks >= InitialSQLLocks
(4 bytes integer)
default: 50
change: OFFLINE
Maximum number of simultaneously active users (database sessions). Overconfiguration exceeding the actual requirement results in an excessive demand for address space (especially shared memory). (2 bytes integer)
default: "NO"
possible values: "YES" "NO"
change: OFFLINE
This parameter (Multiple Components One Database) shows applications whether they have exclusive access to the database or not. Valid types are: 'YES' : for there are other applications using the database 'NO' : for there are no other applications
default: 0
change: OFFLINE
Number of KB useable for OMS heap
0 means : OMS heap is not limited by the liveCache
otherwise the lower limit is
OmsMaxHeapSize >= 100000
(4 bytes integer)
change: OFFLINE
Path where context and diagnosis information is stored for this database. (char(256))
default: 1
change: RUNNING
The value of UseableCPUs has a great influence on the distribution of the database kernel tasks to operating system threads (UKTs) that are generating the main load. The MaxCPUs parameter defines the maximum of CPUs that are occupied by the operating system threads (UKTs) that are generating the main load. UseableCPUs allows online modifications and can be used to narrow down or raise the currently used CPUs during runtime. The lower and upper limits are: 1 <= UseableCPUs <= MaxCPUs ( UseableCPUs <= MaxCPUs ) The parameter LoadBalancingCheckInterval must be greater than 0 to set value that differs from MaxCPUs. (2 bytes integer)
default: "NO"
possible values: "YES" "NO"
change: OFFLINE
Specifies whether the database system mirrors the log area. This kind of mirroring should be only used if hardware-based mirroring is not possible. 'YES': log area is mirrored 'NO' : log area is not mirrored (char(8))