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em/address_space_MB - Space reserved for user context in work processes

em/address_space_MB - Space reserved for user context in work processes

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| Parameter : em/address_space_MB |
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| Short description: Space reserved for user context in work processes |
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| Parameter description : |
| ----------------------- |
| This parameter specifies in MB the size of the address space that is |
| provided for the memory class "Extended Memory" in a work process. |
| This therefore also defines the maximum total of Extended Global |
| Memory and Extended Memory for a single user context. |
| |
| The value is only relevant on operating systems that implement |
| Extended Memory with mapped files, that is map Extended Memory in |
| address space of the processes (Microsoft Windows NT, Linux, AS/400).|
| The setting of the value must be well-judged to make optimal use of |
| the scarce address space on 32 bit platforms, or if an extrememly |
| large amount of Extended Global Memory or extremely large user |
| contexts are required on 64 bit platforms. |
| The size of the address space for a process under 32 bit NT is 2 GB. |
| Rule of thumb: |
| Code + Rollarea + Total(Buffers) + em/address_space_MB < 2GB |
| approx: 100MB+ 10MB + ? + ? |
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| Application area: Extended memory |
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| Unit: 1 MB |
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| Default value : 512 for 32 bit |
| 4GB or 8GB for 64 bit |
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| Who is permitted to make changes: The customer |
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| Limitations with regard to operating systems: Only applies to |
| Microsoft Windows NT and Linux |
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| Limitations for Database Systems: None |
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| Are other parameters affected/dependent: No |
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| Valid input, formats, areas : approx. 512 to 1500 for 32 bit |
| As required for 64 bit |
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| Short Description : Space reserved for user context in work processes
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| Applications Area : ExtMemory
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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 : 128
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| Maximum : 32000
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