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The SINGLEDEFS Parameter File


The use of a SINGLEDEFS parameter file is optional.

When a single-user mode connection is established, the SQLPOOL and bufferpool data areas are dynamically created.

The SQLPOOL area will grow dynamically if more space is needed, see SQLPOOL.

UNIX + VMS: To change the size of the bufferpool in single-user mode a SINGLEDEFS file, similar to the MULTIDEFS file, should be created in the database home directory.
A template of this file, showing the default values for the relevant parameters, can be found in the examples directory:

 
 --
 --  Parameters for single-user system
 --
 Databanks  100    -- (40-1000)     Max number of databanks
 Tables     4000   -- (500-1000000) Max number of tables
 Pages2K    128    -- (22-1000000)  Size of 2k bufferpool region (pages)
 Pages16K    32     -- (22-1000000)  Size of 16k bufferpool region (pages)
 Pages64K    32     -- (22-1000000)  Size of 64k bufferpool region (pages)
 
Note: When changing parameters in the SINGLEDEFS file, always change the copy in the database home directory. Never change the template file in the examples directory.

Win: The use of a SINGLEDEFS is not supported on the Windows platform.



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