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You can use a text editor at any time to set the virtual
shared-memory configuration parameters. Use the editor to locate
the parameter in the file, enter the new value or values, and rewrite
the file to disk.
Table 18 lists the ONCONFIG parameters
that you use to configure the virtual portion of shared memory.
For more information, see the chapter on configuration effects on
memory in your IBM Informix: Performance Guide.
Table 18. Configuring the Virtual Portion of Shared Memory
ONCONFIG
Parameter |
Purpose |
| PC_POOLSIZE |
Specifies the number of SPL routines
that can be stored in the SPL routine cache. |
| PC_HASHSIZE |
Specifies the number of hash buckets in the SPL routine
cache. |
| SHMVIRTSIZE |
Specifies the initial size of the virtual portion
of shared memory |
| STACKSIZE |
Specifies the stack size for the database server
user threads |
| SHMADD |
Specifies the size of dynamically added shared-memory segments |
| SHMTOTAL |
Specifies the total amount of memory to be used
by the database server |
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