|Default value||If 1 - 3 CPUS, then
If 4 - 15 CPUs, then
If 16 or more CPUs, then
If ASM, then
|Range of values||
|Oracle RAC||Multiple instances can have different values.|
Footnote 1 On 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.