Solution : https://service.sap.com/sap/support/notes/785397 (SAP Service marketplace login required)
Key words : 
5 support package 4 patch collection windows 32 bit reason, sql> alter session set current_schema=ctxsys, sql> alter session set current_schema=mdsys, sql> alter session set current_schema=wksys, sqlplus /nolog    sql> connect /, sysdba   sql> select username, solution post-installation instructions, sql> select count, sysdba    sql> shutdown, sysdba   sql> shutdown
Related Notes : 
       
| 539921 | Current patch set for Oracle 9.2.0 |