GCS_SERVER_PROCESSES

Property	Description
Parameter type	Integer
Default value	If 1 - 3 CPUS, then `1` If 4 - 15 CPUs, then `2` If 16 or more CPUs, then `2` + (CPUs / 32). If the result includes a fraction, then the fraction is disregarded. For example, if you had 20 CPUs, then 2 + (20 / 32) would equal 2 GCS processes.^Foot 1 If `CLUSTER_DATABASE` is set to `false`, then `0` If ASM, then `1`
Modifiable	No
Range of values	`1` to `36`
Basic	No
Oracle RAC	Multiple instances can have different values.

^Footnote 1On certain operating systems, the RDBMS optimizes the default allocation of background GCS server processes based on the core to thread ratio of the CPU.

GCS_SERVER_PROCESSES specifies the number of background GCS server processes (LMS0, ... LMS9 and LMSa, ... LMSz) to serve the inter-instance traffic among Oracle RAC instances. GCS server processes are only seen in an Oracle RAC environment.