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Shared-Memory Size Allocation

Use the following parameters to control how and where the database server allocates shared memory.

Configuration Parameter Description
EXTSHMADD Specifies the size of an added extension segment.
SHMADD Specifies the increment of memory that is added when the database server requests more memory.
SHMBASE Specifies the shared-memory base address and is computer dependent. The value depends on the platform and whether the processor is 32-bit or 64-bit. For information on which SHMBASE value to use, see the machine notes.
SHMTOTAL Specifies the maximum amount of memory that the database server is allowed to use.
SHMVIRTSIZE Specifies the size of the first piece of memory that the database server attaches.

For more information on these parameters, see Shared Memory.

For platform-specific information on these database server shared-memory configuration parameters, see your machine notes file on UNIX or your release notes file on Windows.

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