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Parameter block
For a full description of these parameters, see the WebSphere MQ for z/OS System Setup Guide.
Parameter block is any one or more of the following parameters that you want to change:
- ALCUNIT
- Specifies the unit in which primary and secondary space allocations are made.
Specify one of:
- CYL
- Cylinders
- TRK
- Tracks
- BLK
- Blocks
- ARCPFX1
- Specifies the prefix for the first archive log data set name.
See the TSTAMP parameter for a description of how the data sets are named and for restrictions on the length of ARCPFX1.
- ARCPFX2
- Specifies the prefix for the second archive log data set name.
See the TSTAMP parameter for a description of how the data sets are named and for restrictions on the length of ARCPFX2.
- ARCRETN
- Specifies the retention period, in days, to be used when the archive log data set is created.
The parameter must be in the range zero through 9999.
Discarding archive log data sets is discussed in the z/OS System Administration Guide.
- ARCWRTC
- Specifies the list of z/OS routing codes for messages about the archive log data sets to the operator.
Specify up to 14 routing codes, each with a value in the range 1 through 16. You must specify at least one code. Separate codes in the list by commas, not by blanks.
For more information about z/OS routing codes, see the MVS™ Routing and Descriptor Codes manual.
- ARCWTOR
- Specifies whether a message is to be sent to the operator and a reply is received before attempting to mount an archive log data set.
Other WebSphere MQ users might be forced to wait until the data set is mounted, but they are not affected while WebSphere MQ is waiting for the reply to the message.
Specify either:
- YES
- The device needs a long time to mount archive log data sets. For example, a tape drive. (The synonym is Y.)
- NO
- The device does not have long delays. For example, DASD. (The synonym is N.)
- BLKSIZE
- Specifies the block size of the archive log data set. The block size you specify must be compatible with the device type you specify in the UNIT parameter.
The parameter must be in the range 4 097 through 28 672. The value you specify is rounded up to a multiple of 4 096.
This parameter is ignored for data sets that are managed by the storage management subsystem (SMS).
- CATALOG
- Specifies whether archive log data sets are cataloged in the primary integrated catalog facility (ICF) catalog.
Specify either:
- NO
- Archive log data sets are not cataloged. (The synonym is N.)
- YES
- Archive log data sets are cataloged. (The synonym is Y.)
- COMPACT
- Specifies whether data written to archive logs is to be compacted. This option applies only to a 3480 or 3490 device that has the improved data recording capability (IDRC) feature. When this feature is turned on, hardware in the tape control unit writes data at a much higher density than normal, allowing for more data on each volume. Specify NO if you do not use a 3480 device with the IDRC feature or a 3490 base model, with the exception of the 3490E. Specify YES if you want the data to be compacted.
Specify either:
- NO
- Do not compact the data sets. (The synonym is N.)
- YES
- Compact the data sets. (The synonym is Y.)
- PRIQTY
- Specifies the primary space allocation for DASD data sets in ALCUNITs.
The value must be greater than zero.
This value must be sufficient for a copy of either the log data set or its corresponding BSDS, whichever is the larger.
- PROTECT
- Specifies whether archive log data sets are to be protected by discrete ESM (external security manager) profiles when the data sets are created.
Specify either:
- NO
- Profiles are not created. (The synonym is N.)
- YES
- Discrete data set profiles are created when logs are off-loaded. (The synonym is Y.) If you specify YES:
- ESM protection must be active for WebSphere MQ.
- The user ID associated with the WebSphere MQ address space must have authority to create these profiles.
- The TAPEVOL class must be active if you are archiving to tape.
Otherwise, off-loads will fail.
- QUIESCE
- Specifies the maximum time in seconds allowed for the quiesce when an ARCHIVE LOG command is issued with MODE QUIESCE specified.
The parameter must be in the range 1 through 999.
- SECQTY
- Specifies the secondary space allocation for DASD data sets in ALCUNITs.
The parameter must be greater than zero.
- TSTAMP
- Specifies whether the archive log data set name has a time stamp in it.
Specify either:
- NO
- Names do not include a time stamp. (The synonym is N.) The archive log data sets are named:
arcpfxi.AnnnnnnnWhere arcpfxi is the data set name prefix specified by ARCPFX1 or ARCPFX2. arcpfxi can have up to 35 characters.
- YES
- Names include a time stamp. (The synonym is Y.) The archive log data sets are named:
arcpfxi.cyyddd.Thhmmsst.Annnnnnnwhere c is 'D' for the years up to and including 1999 or 'E' for the year 2000 and later, and arcpfxi is the data set name prefix specified by ARCPFX1 or ARCPFX2. arcpfxi can have up to 19 characters.- EXT
- Names include a time stamp. The archive log data sets are named:
arcpfxi.Dyyyyddd.Thhmmsst.AnnnnnnnWhere arcpfxi is the data set name prefix specified by ARCPFX1 or ARCPFX2. arcpfxi can have up to 17 characters.
- UNIT
- Specifies the device type or unit name of the device that is used to store the first copy of the archive log data set.
Specify a device type or unit name of 1 through 8 characters.
If you archive to DASD, we can specify a generic device type with a limited volume range.
- UNIT2
- Specifies the device type or unit name of the device that is used to store the second copy of the archive log data sets.
Specify a device type or unit name of 1 through 8 characters.
If this parameter is blank, the value set for the UNIT parameter is used.
Parent topic:
Parameter descriptions
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