Applying Oracle API Gateway Patch 21548157: OAG BUNDLE PATCH 11.1.2.3.0 SP3

Applying Oracle API Gateway Patch 21548157: OAG BUNDLE PATCH 11.1.2.3.0 SP3

NOTE: To be applied on top of an existing OAG 11.1.2.3.0 or OAG 11.1.2.3.0 SP1/SP2 installation.

If you have upgraded Oracle API Gateway (OAG) from 11.1.2.1.0 to 11.1.2.3.0 SP2, you may encounter an issue with XPATH field appearing empty post upgrade which is detailed in this post.

Applying the patch

- Download and extract the patch 21548157 onto the server


[API Gateway Core Server]

- Shutdown the existing Node Manager and Gateway instances and take back up of existing installation.
- Remove any previous patches from your INSTALL_DIR/apigateway/ext/lib directory (or the ext/lib directory in an API Gateway instance) as these are already included in SP3.Do not remove files used by any custom API Gateway filters. 
- Remove the old third-party libraries from the API Gateway by deleting INSTALL_DIR/apigateway/system/lib/modules directory.
- Unzip and extract API Gateway 11.1.2.3.0 SP3 Core over the /apigateway directory in existing installation.
   
tar -xzvf OAG_11.1.2.3.0_SP3_Core_linux-x86-64_BNyyyymmddn.tar.gz -C /oag_home/OAG-11.1.2.3.0/apigateway/


[API Gateway Analytics]

- Shutdown the existing Analytics instance and take back up of existing installation.
- Remove any previous patches from your INSTALL_DIR/oaganalytics/ext/lib directory as these are already included in SP3.
- Remove the old third-party libraries from Analytics. To do this, delete the INSTALL_DIR/oaganalytics/system/lib/modules directory.
- Unzip and extract API Gateway 11.1.2.3.0 SP3 Analytics over the /oaganalytics directory in existing installation. Eg:
   
tar -xzvf OAG_11.1.2.3.0_SP3_Analytics_linux-x86-64_BNyyyymmddn.tar.gz -C /oag_home/OAG-11.1.2.3.0/analytics/


[Policy Studio]

- Shut down Policy Studio back up existing INSTALL_DIR/oagpolicystudio directory.
- Unzip and extract API Gateway 11.1.2.3.0 SP3 Policy Studio over the /oagpolicystudio directory in the existing installation. Eg:
   
tar -xzvf OAG_11.1.2.3.0_SP3_PolicyStudio_linux-x86-64_BNyyyymmddn.tar.gz -C /oag_home/OAG-11.1.2.3.0/oagpolicystudio/

Note: The first time you start Policy Studio, you must use policystudio -clean.


[Configuration Studio]

- Shut down Configuration Studio back up existing INSTALL_DIR/oagconfigurationstudio directory.
- Unzip and extract API Gateway 11.1.2.3.0 SP3 Configuration Studio over the /oagconfigurationstudio directory in the existing installation. Eg:
   
tar -xzvf OAG_11.1.2.3.0_SP3_ConfigurationStudio_linux-x86-64_BNyyyymmddn.tar.gz -C /oag_home/OAG-11.1.2.3.0/oagconfigurationstudio/


Note: The first time you start Configuration Studio, you must use configurationstudio -clean.

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RETRIEVE ATTRIBUTE from MESSAGE FILTER XPATH is empty after upgrading Oracle API Gateway (OAG) from 11.1.2.1.0 to 11.1.2.3.0 SP2