00604, 00000, "error occurred at recursive SQL level %s"
// *Cause: An error occurred while processing a recursive SQL statement
// (a statement applying to internal dictionary tables).
// *Action: If the situation described in the next error on the stack
// can be corrected, do so; otherwise contact Oracle Support.

Previously once i got these error when i imported data from one database to another database. First i imported the data from database a to database b but i am not satisfied with that import and again i imported data in database b. Then when i connected as user i got this problem. Then i dropped the all users except SYS,SYSTEM,OUTLN. Then again i imported data into database b. This time the problem fixed. So if this is your situation then try the above method. If it's not then give a call to customer support. Any way wait some more time. Out folks will get back you with some more good ideas. Good luck.