Error AWR Operation failed: CATPROC not valid when creating database with dbca

I have a fresh installation of Oracle 11g enterprise edition on CentOS 6, both 64 bits. I have installed Oracle and so far everything looks fine. I have already added an started a listener. The problem I have now is when I try to create a test db using dbca. Everything goes well until the post creation DB part which popups an error. The error shows the same text as the /opt/app/oracle/cfgtoollogs/dbca/testingDB/postDBCreation.log:

   utl_recomp_begin: 09:34:38 
   utl_recomp_end: 09:34:42
   BEGIN dbms_swrf_internal.cleanup_database(cleanup_local => FALSE); END;

  *
  ERROR at line 1:
  ORA-13516: AWR Operation failed: CATPROC not valid
  ORA-06512: at "SYS.DBMS_SWRF_INTERNAL", line 206
  ORA-06512: at "SYS.DBMS_SWRF_INTERNAL", line 239
  ORA-06512: at line 1

The creation of the DB cannot continue and it stops here…

I have searched everywhere in internet but not luck so far. I have no clues what it can be. Any suggestions?

Thanks in advance,