Naga, What output do you get from the following commands: which chmod ldd `which chmod` ?? -Mark From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Nagaraj S Sent: Tuesday, March 03, 2009 8:23 AM To: oracle-l Subject: Permission Issue Hi Gurus, I get below error while trying to change the permission of oracle directory. Kindly advice were could be the problem Bash[]$ id uid=200(oracle) gid=200(dba) groups=200(dba),201(oinstall) context=user_u:system_r:unconfined_t Bash[]$ cat /etc/redhat-release Red Hat Enterprise Linux ES release 4 (Nahant Update 7) Bash[]> chmod -R 755 oracle chmod: libagtsh.so: not found [No such file or directory] Regards, Naga