total 0
drwxrwxrwx 2 oracle dba 96 Oct 16 2010 10.2.0.4.4
drwxrwxrwx 2 oracle dba 96 Oct 16 2010 10.2.0.4.5
$sqlplus / as sysdba
SQL> @ /psu/10.2.0.4.4/catpsu.sql
SQL> @ /psu/10.2.0.4.5/catopsu.sql
更多关于CPU的信息，可以参看：Maclean的了解Oracle Critical Patch Update。
5. 参考文档。
Oracle Recommended Patches ― Oracle Database [ID 756671.1]
Patch Set Updates for Oracle Products [ID 854428.1]
Introduction To Oracle Database catbundle.sql [ID 605795.1]
How to confirm that a Critical Patch Update (CPU) has been installed in Linux / UNIX [ID 821263.1]