isql -Usa -Psa_password -Sservername -n -i$SYBASE/$SYBASE_ASE/scripts/installjsdb
-ooutput_file
                    
                Note: When
                        upgrading from Adaptive Server version 12.5.x to 15.5 and later, increase
                        the size of sybmgmtdb from 50MB to at least
                        160MB. 
                        sybmgmtdb mus thave free log space of at least 60MB.