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rspo/global_shm/printer_list - Anzahl Einträge in einem Shared-Memory-Cache des R/3 Spool Systems

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| Parameter : rspo/global_shm/printer_list |
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| Short description: Size of a chared memory area that is used by |
| the R/3 System. |
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| Parameter description : |
| ----------------------- |
| The parameter value determines the number of entries in a shared |
| memory cache of the spool system, where each entry requires about |
| 750 Bytes. |
| |
| From Release 4.0, the purpose and the administration of this |
| cache is completely new (see the Release Notes for this parameter). |
| |
| In Release 4.0, the cache is used as a temporary memory space |
| for administrative data of all work processes that process |
| spool output requests. |
| |
| The spool work processes of a server use the cache to control the |
| "device polling" (where the status of active pool requests is |
| repeatedly queried automatically). |
| |
| For this control, you need a cache entry for each device with |
| active spool output requests. If the cache overflows (if there is |
| no free entry for a new active device), then there is no polling |
| for this device. The status of the output statement concerned |
| is set to "Ready" immediately after it is transferred to the |
| external spool system. |
| The output request is printed. You can still process other requests |
| for the device concerned without any performance problems. |
| |
| The cache should be dimensioned in such a way that the peak value |
| of the output devices avtive at the same time can be included in |
| the cache, where entries for temporary use must still be |
| available. |
| |
| To ensure that the number of entries specified for controlling |
| polling actually exist, the standard value of entries is always |
| allocated in addition to the value specified. Example: The |
| user enters the value 400. 700 entries are actually allocated: |
| the 400 entries that were requested by the user plus the |
| 300 default value entries. |
| |
| |
| Use of the cache before Release 4.0: Refer to Note 19498. |
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Application area: Spool
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| Unit : Number of list entries |
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| Default value : 150. The default value is also automatically added |
| again. The entry size is about 750 bytes). |
| |
| You should not set a value smaller than the default value. |
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| Who is permitted to make changes: The customer |
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| Limitations for operating systems: None |
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Limitations for database systems: None
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| Other Parameters Affected or Dependent: |
| |
| Changes to this parameter have an affect on the shared memeory pool |
| 40 (ipc/shm_psize_40, 750 bytes for each entry in the |
| printer list). |
| |
| This dependency does not apply to AS/400 systems, because on AS/400 |
| SAP caches are not merged in shared memory pools. |
| On AS/400 systems the parameter can be changed without taking |
| pool sizes into account. |
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| Valid Input, Formats, Areas: |
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------------------------------------------------------------------------
| Short Description : Anzahl Einträge in einem Shared-Memory-Cache des R/3 Spool Systems
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| Applications Area : Spool
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| Parameter Type : I
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| Changes allowed : X
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| Valid for Operating System : *
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| Dynamic switchable :
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| Same on all Servers :
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Length: 8014 Date: 20191018 Time: 052904     sap01-206 ( 9 ms )

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