DKUPDTWT parameter - Revision history

DCameron: /* Description */

2020-07-07T13:45:13Z

Description

← Older revision		Revision as of 13:45, 7 July 2020
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	<p>If DKUPDTWT is nonzero, the CHKPST and CHKPTIMR pseudo subtasks are started automatically at <var class="product">Model 204</var> initialization. An error message informs you if the <var>[[NSUBTKS_parameter\|NSUBTKS]]</var> parameter is set too low to start these pseudo subtasks.</p>		<p>If DKUPDTWT is nonzero, the CHKPST and CHKPTIMR pseudo subtasks are started automatically at <var class="product">Model 204</var> initialization. An error message informs you if the <var>[[NSUBTKS_parameter\|NSUBTKS]]</var> parameter is set too low to start these pseudo subtasks.</p>
	<p>DKUPDTWT has a maximum of 60, and it also depends on the <var>[[CPTIME_parameter\|CPTIME]]</var> parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>		<p>DKUPDTWT has a maximum of 60, and it also depends on the <var>[[CPTIME_parameter\|CPTIME]]</var> parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>
	<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.		<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>

	If sub-transaction checkpointing is activated by setting <var>[[CPTYPE_parameter\|CPTYPE]]</var> to 1, then DKUPDTWT must be set to 0</p>		<p>If [[Checkpoints:_Storing_before-images_of_changed_pages#Overview_of_sub-transaction_checkpoints\|sub-transaction checkpointing]] is activated by setting <var>[[CPTYPE_parameter\|CPTYPE]]</var> to 1, then DKUPDTWT must be set to 0</p>
	[[Category:System parameters]]		[[Category:System parameters]]
	[[Category:Parameters]]		[[Category:Parameters]]

DCameron: /* Description */

2020-07-07T13:43:10Z

Description

← Older revision		Revision as of 13:43, 7 July 2020
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	<p>If DKUPDTWT is nonzero, the CHKPST and CHKPTIMR pseudo subtasks are started automatically at <var class="product">Model 204</var> initialization. An error message informs you if the <var>[[NSUBTKS_parameter\|NSUBTKS]]</var> parameter is set too low to start these pseudo subtasks.</p>		<p>If DKUPDTWT is nonzero, the CHKPST and CHKPTIMR pseudo subtasks are started automatically at <var class="product">Model 204</var> initialization. An error message informs you if the <var>[[NSUBTKS_parameter\|NSUBTKS]]</var> parameter is set too low to start these pseudo subtasks.</p>
	<p>DKUPDTWT has a maximum of 60, and it also depends on the <var>[[CPTIME_parameter\|CPTIME]]</var> parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>		<p>DKUPDTWT has a maximum of 60, and it also depends on the <var>[[CPTIME_parameter\|CPTIME]]</var> parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>
	<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>		<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.

			If sub-transaction checkpointing is activated by setting <var>[[CPTYPE_parameter\|CPTYPE]]</var> to 1, then DKUPDTWT must be set to 0</p>
	[[Category:System parameters]]		[[Category:System parameters]]
	[[Category:Parameters]]		[[Category:Parameters]]

JDamon: /* Description */

2015-07-24T17:30:46Z

Description

← Older revision		Revision as of 17:30, 24 July 2015
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	==Description==		==Description==
	<p>How long disk buffers containing a file's modified pages must have aged (in seconds) before they can be written to disk. Even after the write, the pages remain in the buffer pool for future reference until the file is closed by the last user. </p>		<p>How long disk buffers, containing a file's modified pages, must have aged (in seconds) before they can be written to disk. Even after the write, the pages remain in the buffer pool for future reference until the file is closed by the last user. </p>
	<p>If DKUPDTWT is zero, <var class="product">Model 204</var> writes all of a file's modified pages to disk at the end of the last in-flight update of the file. The user who completed the last in-flight update waits for this disk update process to complete and for the message stating that the disk update is complete.</p>		<p>If DKUPDTWT is zero, <var class="product">Model 204</var> writes all of a file's modified pages to disk at the end of the last in-flight update of the file. The user who completed the last in-flight update waits for this disk update process to complete and for the message stating that the disk update is complete.</p>
	<p>If DKUPDTWT is nonzero, <var class="product">Model 204</var> delays the start of the disk update process for at least DKUPDTWT seconds, after which it can be the checkpoint pseudo subtask (CHKPST) that performs the disk update. The user who completed the last in-flight update does not have to wait for the disk update process to complete. </p>		<p>If DKUPDTWT is nonzero, <var class="product">Model 204</var> delays the start of the disk update process for at least DKUPDTWT seconds, after which it can be the checkpoint pseudo subtask (CHKPST) that performs the disk update. The user who completed the last in-flight update does not have to wait for the disk update process to complete. </p>

JDamon: Corrected the description

2015-07-24T17:30:07Z

Corrected the description

← Older revision		Revision as of 17:30, 24 July 2015
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	==Description==		==Description==
	<p>How long a disk ~~buffer~~ containing a file's modified pages must have aged (in seconds) before it can be ~~flushed (that is,~~ written to disk)</p>		<p>How long disk buffers containing a file's modified pages must have aged (in seconds) before they can be written to disk. Even after the write, the pages remain in the buffer pool for future reference until the file is closed by the last user. </p>
	<p>If DKUPDTWT is zero, <var class="product">Model 204</var> writes all of a file's modified pages to disk at the end of the last in-flight update of the file. The user who completed the last in-flight update waits for this disk update process to complete and for the message stating that the disk update is complete.</p>		<p>If DKUPDTWT is zero, <var class="product">Model 204</var> writes all of a file's modified pages to disk at the end of the last in-flight update of the file. The user who completed the last in-flight update waits for this disk update process to complete and for the message stating that the disk update is complete.</p>
	<p>If DKUPDTWT is nonzero, <var class="product">Model 204</var> delays the start of the disk update process for at least DKUPDTWT seconds, after which it can be the checkpoint pseudo subtask (CHKPST) that performs the disk update. The user who completed the last in-flight update does not have to wait for the disk update process to complete. </p>		<p>If DKUPDTWT is nonzero, <var class="product">Model 204</var> delays the start of the disk update process for at least DKUPDTWT seconds, after which it can be the checkpoint pseudo subtask (CHKPST) that performs the disk update. The user who completed the last in-flight update does not have to wait for the disk update process to complete. </p>

DCameron: /* Description */

2014-10-16T13:15:28Z

Description

← Older revision		Revision as of 13:15, 16 October 2014
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	<p>If DKUPDTWT is nonzero, <var class="product">Model 204</var> delays the start of the disk update process for at least DKUPDTWT seconds, after which it can be the checkpoint pseudo subtask (CHKPST) that performs the disk update. The user who completed the last in-flight update does not have to wait for the disk update process to complete. </p>		<p>If DKUPDTWT is nonzero, <var class="product">Model 204</var> delays the start of the disk update process for at least DKUPDTWT seconds, after which it can be the checkpoint pseudo subtask (CHKPST) that performs the disk update. The user who completed the last in-flight update does not have to wait for the disk update process to complete. </p>
	<p>If DKUPDTWT is nonzero, the CHKPST and CHKPTIMR pseudo subtasks are started automatically at <var class="product">Model 204</var> initialization. An error message informs you if the <var>[[NSUBTKS_parameter\|NSUBTKS]]</var> parameter is set too low to start these pseudo subtasks.</p>		<p>If DKUPDTWT is nonzero, the CHKPST and CHKPTIMR pseudo subtasks are started automatically at <var class="product">Model 204</var> initialization. An error message informs you if the <var>[[NSUBTKS_parameter\|NSUBTKS]]</var> parameter is set too low to start these pseudo subtasks.</p>
	<p>DKUPDTWT has a maximum of 60, and it also depends on the CPTIME parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>		<p>DKUPDTWT has a maximum of 60, and it also depends on the <var>[[CPTIME_parameter\|CPTIME]]</var> parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>
	<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>		<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>
	[[Category:System parameters]]		[[Category:System parameters]]
	[[Category:Parameters]]		[[Category:Parameters]]

DCameron: /* Description */

2014-10-16T13:14:30Z

Description

← Older revision		Revision as of 13:14, 16 October 2014
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	<p>If DKUPDTWT is zero, <var class="product">Model 204</var> writes all of a file's modified pages to disk at the end of the last in-flight update of the file. The user who completed the last in-flight update waits for this disk update process to complete and for the message stating that the disk update is complete.</p>		<p>If DKUPDTWT is zero, <var class="product">Model 204</var> writes all of a file's modified pages to disk at the end of the last in-flight update of the file. The user who completed the last in-flight update waits for this disk update process to complete and for the message stating that the disk update is complete.</p>
	<p>If DKUPDTWT is nonzero, <var class="product">Model 204</var> delays the start of the disk update process for at least DKUPDTWT seconds, after which it can be the checkpoint pseudo subtask (CHKPST) that performs the disk update. The user who completed the last in-flight update does not have to wait for the disk update process to complete. </p>		<p>If DKUPDTWT is nonzero, <var class="product">Model 204</var> delays the start of the disk update process for at least DKUPDTWT seconds, after which it can be the checkpoint pseudo subtask (CHKPST) that performs the disk update. The user who completed the last in-flight update does not have to wait for the disk update process to complete. </p>
	<p>If DKUPDTWT is nonzero, the CHKPST and CHKPTIMR pseudo subtasks are started automatically at <var class="product">Model 204</var> initialization. An error message informs you if the NSUBTKS parameter is set too low to start these pseudo subtasks.</p>		<p>If DKUPDTWT is nonzero, the CHKPST and CHKPTIMR pseudo subtasks are started automatically at <var class="product">Model 204</var> initialization. An error message informs you if the <var>[[NSUBTKS_parameter\|NSUBTKS]]</var> parameter is set too low to start these pseudo subtasks.</p>
	<p>DKUPDTWT has a maximum of 60, and it also depends on the CPTIME parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>		<p>DKUPDTWT has a maximum of 60, and it also depends on the CPTIME parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>
	<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>		<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>
	[[Category:System parameters]]		[[Category:System parameters]]
	[[Category:Parameters]]		[[Category:Parameters]]

DCameron: /* Summary */

2014-10-16T13:10:29Z

Summary

← Older revision		Revision as of 13:10, 16 October 2014
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	<dd>All		<dd>All
	<dt>Introduced		<dt>Introduced
	<dd><var class="product">Model 204 V6.1</var> ~~or earlier~~		<dd><var class="product">Model 204 V3.2</var>
	</dl>		</dl>

	==Description==		==Description==
	<p>How long a disk buffer containing a file's modified pages must have aged (in seconds) before it can be flushed (that is, written to disk)</p>		<p>How long a disk buffer containing a file's modified pages must have aged (in seconds) before it can be flushed (that is, written to disk)</p>

DmeWiccan: Automatically generated page update

2013-08-27T16:25:58Z

Automatically generated page update

← Older revision		Revision as of 16:25, 27 August 2013
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			{{Template:DKUPDTWT parameter subtitle}}
	==Summary==		==Summary==
	<dl>		<dl>

DmeWiccan: Automatically generated page update

2013-04-23T01:50:54Z

Automatically generated page update

← Older revision		Revision as of 01:50, 23 April 2013
Line 19:		Line 19:
	<p>DKUPDTWT has a maximum of 60, and it also depends on the CPTIME parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>		<p>DKUPDTWT has a maximum of 60, and it also depends on the CPTIME parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>
	<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>		<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>
	[[Category:System ~~Parameters~~]]		[[Category:System parameters]]
	[[Category:Parameters]]		[[Category:Parameters]]

Dme: Undo revision 56843 by DmeWiccan (talk)

2013-04-19T15:29:14Z

Undo revision 56843 by DmeWiccan (talk)

← Older revision		Revision as of 15:29, 19 April 2013
Line 19:		Line 19:
	<p>DKUPDTWT has a maximum of 60, and it also depends on the CPTIME parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>		<p>DKUPDTWT has a maximum of 60, and it also depends on the CPTIME parameter setting. If CPTIME is nonzero, DKUPDTWT must be less than or equal to CPTIME*30. </p>
	<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>		<p>The system manager can reset DKUPDTWT to zero while the online is running, and to a nonzero value as long as the CHKPST and CHKPTIMR pseudo subtasks were started during <var class="product">Model 204</var> initialization.</p>
	[[Category:System ~~parameters~~]]		[[Category:System Parameters]]
	[[Category:Parameters]]		[[Category:Parameters]]