I increased the number of processes.. but still I am facing this error... I am searching on metalink also..
ERROR at line 1: ORA-12801: error signaled in parallel query server P051 ORA-00018: maximum number of sessions exceeded ORA-06512: at "SYS.UTL_RECOMP", line 760 ORA-06512: at line 4
Did these steps and i ran it again.. its working fine now.. All sys objects have been compiled successfully.
shutdown immediate startup upgrade shutdown immediate startup