Obtain key values for shared-memory segments

To see the key values for shared-memory segments, run the onstat -g seg command. For more information, see the sections on SHMADD and the buffer pool in your HCL OneDB™ Performance Guide.

When a virtual processor requests that the operating system attach the first shared-memory segment, it supplies the unique key value to identify the segment. In return, the operating system passes back a shared-memory segment identifier associated with the key value. Using this identifier, the virtual processor requests that the operating system attach the segment of shared memory to the virtual-processor address space.