Linux systems have a semaphore problem causing the DB2 stale connection exception SQL1224 error. This is related to the extension shared memory attachment.
db2 catalog TCPIP node RHOST remote LHOST server 50000 db2 catalog WAS as WASAlias db2 uncatalog db WAS db2 catalog WASAlias as WAS at node RHOST
db2 connect to WAS user xxx passwd: xxx