hi
i am getting this error while i am connecting to sql plus what could be reason

/dev/cciss/c0d0p5 5039840 946464 3837360 20% /
/dev/cciss/c0d0p1 150128 13654 128723 10% /boot
/dev/cciss/c0d0p3 44347968 25411780 16683416 61% /home1
/dev/cciss/c0d0p2 44347968 14231408 27863788 34% /home2
/dev/cciss/c0d0p9 38516328 6079504 30480264 17% /home3
none 1029448 0 1029448 0% /dev/shm
/dev/cciss/c0d0p6 4031856 814120 3012924 22% /usr
/dev/cciss/c0d0p8 1509920 62328 1370892 5% /var