Hello DBAs, I have a problem at running VIPCA manually at installing RAC 10g environment Platform: OEL 5.2 RAC: 10gR2 [root@rac2 bin]# pwd /u01/crs/oracle/product/10.2.0/crs/bin [root@rac2 bin]# ./vipca /u01/crs/oracle/product/10.2.0/crs/jdk/jre//bin/java: error while loading shared libraries: libpthread.so.0: cannot open shared object file: No such file or directory [root@rac2 bin]# I have checked existence of LD_ASSUME_KERNEL variable in my environment (after unsetting it): echo $LD_ASSUME_KERNEL And output is black which assure that it is unset. Also I followed this document that may solve the problem but no solution. http://forums.oracle.com/forums/thread.jspa?messageID=1615978� It is a bug at oracle & has many workarounds as I see. Please try to solve my problem, & advice me how to undo any changes I made at environment files. Thanks a lot.