SWITCH STREAM command: Difference between revisions
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==Syntax== | ==Syntax== | ||
<p class="syntax">SWITCH STREAM streamname | <p class="syntax">SWITCH STREAM streamname [ RESET ] | ||
</p> | </p> | ||
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<p>If a SWITCH STREAM CCAJRNL command is issued during CHECKPOINT EXTENDED QUIESCE command processing, the journal will be switched, a new checkpoint issued, and the duration extended quiesce time-out set in CPQZSECS will be reset to its maximum, original value-disregarding the already elapsed time.</p> | <p>If a SWITCH STREAM CCAJRNL command is issued during CHECKPOINT EXTENDED QUIESCE command processing, the journal will be switched, a new checkpoint issued, and the duration extended quiesce time-out set in CPQZSECS will be reset to its maximum, original value-disregarding the already elapsed time.</p> | ||
<table> | |||
<tr><th><var>RESET</var></th> | |||
<td>This optional parameter will cause any disabled parallel GDG members to be reopened during the switch. </td> | |||
</p>Valid only for a CCAJLOG stream specified as a Parallel GDG.</tr></table> | |||
[[Category: System manager commands]] | [[Category: System manager commands]] | ||
[[Category:Commands]] | [[Category:Commands]] | ||
Revision as of 20:24, 28 April 2015
Summary
- Privileges
- System manager
- Function
- You can switch streams-parallel, ring, concatenated, GDG-to the next member at any time.
Syntax
SWITCH STREAM streamname [ RESET ]
Where: streamname specifies CCAJRNL, CCAJLOG, CHKPOINT, or CHKPNTS. The command is valid for only these streams.
Usage notes
If you specify:
-
Journal stream CCAJRNL or CCAJLOG, the currently active data set is closed and the next data set defined to the stream is opened.
-
Checkpoint stream CHKPOINT or CHKPNTS, the currently active data set in the stream is closed after the next record is written to the data set.
If a SWITCH STREAM CCAJRNL command is issued during CHECKPOINT EXTENDED QUIESCE command processing, the journal will be switched, a new checkpoint issued, and the duration extended quiesce time-out set in CPQZSECS will be reset to its maximum, original value-disregarding the already elapsed time.
Valid only for a CCAJLOG stream specified as a Parallel GDG.| RESET | This optional parameter will cause any disabled parallel GDG members to be reopened during the switch. |
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