Pupp: As you've mentioned, it is no coming out/clearing from maintanence mode, i tried many options but no luck !!!
Reborg: i invoked the commands you said it gave me below result
#mount -a
mount:No such file or directory
mount:/tmp is already mounted or SWAP is busy
mount:/devdsk/c1d0s7 is already mounted or /export/home is busy
#/sbin/mountall
mount:No such file or directory
mount:/tmp is already mounted or SWAP is busy
mount:/devdsk/c1d0s7 is already mounted or /export/home is busy
Still no luck !!! Please help