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PHYS_MEMSIZE - Available main memory for SAP instance
RFUMSV00 - Advance Return for Tax on Sales/Purchases rdisp/max_wprun_time - Maximum work process run timeThis documentation is copyright by SAP AG.
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| Parameter : PHYS_MEMSIZE |
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| Short description: Available main memory for the SAP instance |
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| Parameter description : |
| ----------------------- |
Important: This parameter is only valid for Windows NT
| |
| This value specifies now many MB of the main memory should be used |
| for the SAP instance. The default value for PHYS_MEMSIZE is the |
| size of the main memory in MB, that is, it is adjusted automatically |
| when the main memory configuration is changed. |
| With this value, the standard values for the following memory |
| management parameters are calculated automatically. This removes |
| the need for manual maintenance. |
| |
| em/initial_size_MB = [PHYS_MEMSIZE] |
| If required, the extended memory extends itself |
| by the value [PHYS_MEMSIZE / 2]. |
| |
| PHYS_MEMSIZE calculates the max. no. of users [UC]. |
| rdisp/ROLL_SHM = [UC] * 100 (100 blocks per user) |
| rdisp/ROLL_MAXFS = [UC] * 100 (100 blocks per user) |
| rdisp/PG_SHM = [UC] * 50 (50 blocks per user) |
| rdisp/PG_MAXFS = 32768 |
| |
| Aim: |
| The new standard values for memory management under Microsoft |
| Windows NT remove the need for manual maintenance of the profile |
| parameters. PHYS_MEMSIZE calculates and adjusts the whole |
| memory management. This value must maintained only if the SAP |
| instance is not permitted to use the whole work memory. |
| |
| Example 1: |
| For a central instance with 1 GB main memory, the database uses |
| 400 MB and the application server 600 MB. The value for PHYS_MEMSIZE |
| should therefore be set manually to 600 in the instance profile. |
| (No other adjustments needed) |
| |
| Example 2: |
| There are two dialog instances (for example production and test |
| system) on one system (1 GB). PHYS_MEMSIZE splits the main memory |
| between the two SAP instances. |
| for example, production system : PHYS_MEMSIZE = 700 |
| Test system : PHYS_MEMSIZE = 300 <
| |
| Example 3: |
| A dialog instance on one host. This means that the SAP instance can |
| use the whole host. This removes the need for manual maintenance of |
| PHYS_MEMSIZE, since its standard value is on the size of the main |
| memory. |
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| Application Area: System |
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| Unit: 1 MB |
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| Default value : [Size of the main memory] |
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| Who is permitted to make changes: The customer |
| Only change when the SAP instance is not permitted to use the whole |
| work memory (for example, central instance, several instances on one |
| host). |
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| Limitations for operating systems: |
| Parameter is only valid for Windows NT. |
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| Limitations for database systems: Microsoft Windows only |
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| Other Parameters Affected or Dependent: |
| |
| The standard values of the following parameters are calculated |
| according to PHYS_MEMSIZE |
| |
| em/initial_size_MB = PHYS_MEMSIZE (extension by PHYS_MEMSIZE / 2) |
| rdisp/ROLL_SHM |
| rdisp/ROLL_MAXFS |
| rdisp/PG_SHM |
| rdisp/PG_MAXFS |
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| Short Description : Available main memory for SAP instance
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| Applications Area : System
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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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| Minimum : 32
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| Maximum : 64000
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Length: 8730 Date: 20240420 Time: 085156 sap01-206 ( 6 ms )
