When Adaptive Server starts, it creates the following files in $SYBASE to store information about the shared memory segments that it uses:
SERVER_NAME.krg SERVER_NAME.srg0
If Adaptive Server allocates more than one shared memory segment either during start-up or after start-up due to reconfiguration, it stores memory segment information in the file:
SERVER_NAME.srgNUM
where NUM is a number from 0 to 255. Note that Adaptive Server allocates a maximum of 257 shared memory segments.