Pre-requisites

Before beginning with the process of upgrading, perform the following pre-requisites.

Configuring Proxies and Repos

You are required to configure the proxies and repos.

Configure the http proxy in /etc/yum.conf file and also export the proxy's address to the environment.

In /etc/yum.conf, add the following line:
```
proxy=<proxy_server>
```

Export the proxy's address.

export http_proxy=<proxy_server>
export https_proxy=<proxy_server>

Enable the required proxies in yum.conf.

curl -O https://yum.oracle.com/public-yum-ol7.repo
mv public-yum-ol7.repo /etc/yum.repos.d/public-yum-ol7.repo
yum-config-manager --enable ol7_latest ol7_UEKR4 ol7_developer_EPEL ol7_optional_latest ol7_addons ol7_UEKR3 ol7_UEKR5

Creating a Backup before Upgrading

You must create a backup of Mediation Engine (ME) and Mediation Engine Connector (MEC) before you begin upgrade.

For ME

Session Monitor provides the feature of backing up the configuration of Mediation Engine (ME) servers by using Configuration Savepoints.

For more information, see Configuration Savepoints section in Settings chapter of Operations Monitor User's Guide.

For MEC

Note:

Backup procedure is not available for probes or Mediation Engine Connector (MEC).

Perform the following to collect present data for comparing incase of any issues:

Take Platform Setup Application (PSA) Screenshots

Go through each page of PSA and make screenshots of the page for comparing with post-upgrade in case of issues.
Potential Customized Files

Ensure to make a backup cpy of all the following potential customized files:
- /etc/mysql - Configuration files for MySQL stored in this directory. Make a copy of the entire directory. This is not required for probes.
- /etc/iptego for version 3.3 or /opt/oracle/ocsm//etc/iptego for version 3.4 and later - Configuration files for Session Monitor services are stored here. Make a copy of the entire directory.
Any other configuration files that you consider to have changed on the server.
Capture current system diagnostics with MySQL dumps and all the hardware system configuration.

Altering Database Tables Before Upgrading to 4.3

For any upgrade to 4.3, the following steps need to be followed. This has to be applied to all the nodes (Mediation Engine/Mediation Engine Connector/Fraud Monitor).

To alter database tables:

Download the "db_update_script.sh" script delivered with RPM.
Set permissions to 777 for script:
```
 chmod 777 db_update_script.sh
```
Run the db upgrade script "db_update_script.sh".
```
 ./db_update_script.sh
```
Note:
This script execution may take time, from a few minutes to several hours based on the number of database entries. As this runs, the GUI will be accessible. Some functions like downloading pcap, message flow, and pdf download may not work in calls page.
Follow the normal upgrade procedure once script execution is successful as mentioned in "Upgrading Session Monitor."

(Optional) Enter the result of the procedure here.