MODIFY JOURNAL

MODIFY JOURNAL

Specifies the desired and maximum allowed sizes of RTR's recovery journal.

Format

MODIFY JOURNAL [disk-1] ... [,disk-n]

Command Qualifiers

Defaults

/CLUSTER

/NOCLUSTER

/BLOCKS=nr-blocks

/BLOCKS=1000

/MAXIMUM_BLOCKS=nr-blocks

/MAXIMUM_BLOCKS=1000

/NODE=node-list

/NODE=default-node-list

/OUTPUT[=file-spec]

/OUTPUT=stdout

Description

The MODIFY JOURNAL command specifies how the size of RTR recovery journal files on the specified disks can be modified. The target or desired size is specified using the /BLOCKS qualifier. The maximum_allowed size is specified using the /MAXIMUM_BLOCKS qualifier. /BLOCKS and /MAXIMUM_BLOCKS are a positional qualifiers, so journal files need not be the same size on each disk.

RTR only uses journal files on nodes that are configured to run servers, that is, on backends and on routers with call-out servers.

Note that the MODIFY JOURNAL command does not cause immediate journal file extension. Actual file size modifications take place on demand (by the RTRACP) within the limits defined by the MODIFY JOURNAL command.

The MODIFY JOURNAL command assumes that a journal already exists for the node. If a journal does not exist, an error message is output.

In contrast to the CREATE JOURNAL command, the MODIFY JOURNAL command is normally entered interactively, not automatically from a startup command procedure.

Parameters

disk-1 ... disk-n

Specifies a list of disk names where journal files are modified.

Refer to the CREATE JOURNAL command for information about disks used for journal files.

Qualifiers

/BLOCKS[=nr-blocks] /BLOCKS=1000 (D)

Specifies the size of the journal file in blocks. This qualifier can be applied locally to each disk or globally for all disks.

/CLUSTER /NOCLUSTER (D)

Specifies that the command is executed on all the nodes in the cluster.

6–98RTR Command Line Interface

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Compaq AA-Q88CE-TE manual Modify Journal disk-1 ... ,disk-n, Disk-1 ... disk-n