PAGEFIX parameter: Difference between revisions
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<table> | <table> | ||
<tr><th>Setting</th><th>Fixes...</th></tr> | <tr><th>Setting</th><th>Fixes...</th></tr> | ||
<tr><th align="right"><var>X'00080000'</var></th><td> | <tr><th align="right"><var>X'02000000'</var></th><td>RESPAGE 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'00400000'</var></th><td>APSYPAGE area.</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'00080000'</var></th><td>Monitor real subtask work area.</td></tr> | |||
<tr><th align="right"><var>X'00040000'</var></th><td>Record descriptions.</td></tr> | <tr><th align="right"><var>X'00040000'</var></th><td>Record descriptions.</td></tr> | ||
<tr><th align="right"><var>X'00020000'</var></th><td>Server areas.</td></tr> | <tr><th align="right"><var>X'00020000'</var></th><td>Server areas.</td></tr> | ||
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<tr><th align="right"><var>X'00004000'</var></th><td>User/file mode table.</td></tr> | <tr><th align="right"><var>X'00004000'</var></th><td>User/file mode table.</td></tr> | ||
<tr><th align="right"><var>X'00002000'</var></th><td>File save areas.</td></tr> | <tr><th align="right"><var>X'00002000'</var></th><td>File save areas.</td></tr> | ||
<tr><th align="right"><var>X'00001000'</var></th><td>DCB areas.</td></tr> | <tr><th align="right"><var>X'00001000'</var></th><td>DCB areas (DTF areas in VSE).</td></tr> | ||
<tr><th align="right"><var>X'00000800'</var></th><td>LPM and DSL for CCATEMP.</td></tr> | <tr><th align="right"><var>X'00000800'</var></th><td>LPM and DSL for CCATEMP.</td></tr> | ||
<tr><th align="right"><var>X'00000400'</var></th><td>LPM and DSL for user files.</td></tr> | <tr><th align="right"><var>X'00000400'</var></th><td>LPM and DSL for user files.</td></tr> | ||
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<tr><th align="right"><var>X'00000010'</var></th><td>Buffer hash field.</td></tr> | <tr><th align="right"><var>X'00000010'</var></th><td>Buffer hash field.</td></tr> | ||
<tr><th align="right"><var>X'00000008'</var></th><td>STAT areas.</td></tr> | <tr><th align="right"><var>X'00000008'</var></th><td>STAT areas.</td></tr> | ||
<tr><th align="right"><var>X'00000004'</var></th><td> SVIO work areas and Server swap pages.</td></tr> | <tr><th align="right"><var>X'00000004'</var></th><td>SVIO work areas and Server swap pages.</td></tr> | ||
<tr><th align="right"><var>X'00000002'</var></th><td>CWAIT work areas.</td></tr> | <tr><th align="right"><var>X'00000002'</var></th><td>CWAIT work areas.</td></tr> | ||
<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> | ||
Revision as of 03:06, 26 November 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
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):
| Setting | Fixes... |
|---|---|
| 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 or Page Translations Exceptions as they are commonly known.
M204.2447: KOMM MUST BE PAGE FIXED TO USE PCTIMER