PAGEFIX parameter: Difference between revisions

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<dd><var class="product">Model 204 V6.1</var> or earlier
<dd><var class="product">Model 204 V6.1</var> or earlier
</dl>
</dl>
==Description==
==Description==
<p>The page fixing feature, indicative of which areas are to be fixed</p>
<p>
<p>PAGEFIX is not used under z/VM. It is used only under z/OS and z/VSE. </p>
<var>PAGEFIX</var> specifies the page fixing feature, indicative of which areas are to be fixed.</p>
<p>Valid settings of PAGEFIX are (options can be summed):</p>
<p>
<var>PAGEFIX</var> is not used under z/VM; it is used only under z/OS and z/VSE. </p>
<p>
Valid settings of <var>PAGEFIX</var> are (options can be summed):</p>
<table>
<table>
<tr><th>Setting</th><th>Fixes...</th></tr>
<tr class="head"><th>Setting</th><th>Fixes...</th></tr>
<tr><th align="right"><var>X'02000000'</var></th><td>RESPAGE area.</td></tr>
<tr><th align="right"><var>X'02000000'</var></th><td><var>RESPAGE</var> area.</td></tr>
<tr><th align="right"><var>X'01000000'</var></th><td>Server non-swappable (NSA) area.</td></tr>
<tr><th align="right"><var>X'01000000'</var></th><td>Server non-swappable (NSA) area.</td></tr>
<tr><th align="right"><var>X'00800000'</var></th><td>Open page buffers.</td></tr>
<tr><th align="right"><var>X'00800000'</var></th><td>Open page buffers.</td></tr>
<tr><th align="right"><var>X'00400000'</var></th><td>APSYPAGE area.</td></tr>
<tr><th align="right"><var>X'00400000'</var></th><td><var>APSYPAGE</var> area.</td></tr>
<tr><th align="right"><var>X'00200000'</var></th><td>Checkpoint asynchronous buffers.</td></tr>
<tr><th align="right"><var>X'00200000'</var></th><td>Checkpoint asynchronous buffers.</td></tr>
<tr><th align="right"><var>X'00100000'</var></th><td>DBIDs.</td></tr>
<tr><th align="right"><var>X'00100000'</var></th><td>DBIDs.</td></tr>
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<tr><th align="right"><var>X'00000001'</var></th><td>KOMM.  </td></tr>
<tr><th align="right"><var>X'00000001'</var></th><td>KOMM.  </td></tr>
</table>
</table>
====PC TIMER requires KOMM to be pagefixed====
====PC TIMER requires KOMM to be pagefixed====
<p>Since the PC TIMER disables interrupts, but still needs to reference KOMM, the following error message informs you to pagefix KOMM. This prevents possible 0C4 and X'11' return codes or Page Translations Exceptions as they are commonly known.</p>
<p>
Since the PC TIMER disables interrupts but still needs to reference KOMM, the following error message informs you to pagefix KOMM. This prevents possible 0C4 and X'11' return codes (commonly known as Page Translation Exceptions):</p>
<p class="code">M204.2447: KOMM MUST BE PAGE FIXED TO USE PCTIMER
<p class="code">M204.2447: KOMM MUST BE PAGE FIXED TO USE PCTIMER
</p>
</p>
[[Category:System parameters]]
[[Category:System parameters]]
[[Category:Parameters]]
[[Category:Parameters]]

Revision as of 00:55, 3 December 2014

Page-fix parameter string

Summary

Default value
X'00000000'
Parameter type
System
Where set
On User 0's parameter line
Related products
All
Introduced
Model 204 V6.1 or earlier

Description

PAGEFIX specifies the page fixing feature, indicative of which areas are to be fixed.

PAGEFIX is not used under z/VM; it is used only under z/OS and z/VSE.

Valid settings of PAGEFIX are (options can be summed):

SettingFixes...
X'02000000'RESPAGE area.
X'01000000'Server non-swappable (NSA) area.
X'00800000'Open page buffers.
X'00400000'APSYPAGE area.
X'00200000'Checkpoint asynchronous buffers.
X'00100000'DBIDs.
X'00080000'Monitor real subtask work area.
X'00040000'Record descriptions.
X'00020000'Server areas.
X'00010000'Record enqueuing table.
X'00008000'Resource enqueuing table.
X'00004000'User/file mode table.
X'00002000'File save areas.
X'00001000'DCB areas (DTF areas in VSE).
X'00000800'LPM and DSL for CCATEMP.
X'00000400'LPM and DSL for user files.
X'00000200'Physical extent blocks for CCATEMP.
X'00000100'Physical extent blocks for user files.
X'00000080'Journal control blocks and buffers.
X'00000040'Buffers.
X'00000020'Buffer control blocks.
X'00000010'Buffer hash field.
X'00000008'STAT areas.
X'00000004'SVIO work areas and Server swap pages.
X'00000002'CWAIT work areas.
X'00000001'KOMM.

PC TIMER requires KOMM to be pagefixed

Since the PC TIMER disables interrupts but still needs to reference KOMM, the following error message informs you to pagefix KOMM. This prevents possible 0C4 and X'11' return codes (commonly known as Page Translation Exceptions):

M204.2447: KOMM MUST BE PAGE FIXED TO USE PCTIMER

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