Oracle CPU/PSU Patch Installation Tutorial

What is CPU/PSU

The full name of the Oracle CPU is critical Patch Update, where Oracle releases a security patch package for each quarter of its products, usually to fix security risks in the product.

The full name of the Oracle PSU is patch Set update,oracle, a patch package that is released quarterly for its products, including bug fixes. Oracle picks up the number of downloads that are downloaded by the user, and the patches that have been validated for lower risk are placed in the PSU per quarter. Each PSU contains not only bug fixes but also the latest CPUs. PSU is usually released along with the CPU.

CPUs are cumulative (cumulative), that is, the latest CPU patches already contain previous CPU patches, so just install the latest CPU patches.

PSU is also usually incremental, most PSU can be installed directly, but some PSU must require the installation of a previous version of the PSU before you can continue to install, to carefully look at each PSU's Readme document.

How to download CPU/PSU

Note: To download CPU/PSU, you must have an Oracle support account!

To the ORACLECPU home page, you can see a list of CPU patches released each quarter (as shown in the following figure), choose the appropriate CPU patch according to your needs, and choose the patch for July2011 year.

Each patch is specific to the database version, you need to find the corresponding database version (shown below), the database version is 11.2.0.1, if not found, the patch does not support the version of the database.

Right click on the database link, which is a detailed description of the patch document, find 3.1.3 Oracle databases, and click on the appropriate version of the DB (as shown in the following figure)