H Removing RUEI From Systems

This appendix describes the procedure for uninstalling RUEI from Reporter and Collector systems.

To uninstall RUEI from each Reporter and Collector system, do the following:

Log in to the required system as the RUEI_USER user, and clear all crontab entries by running the following command:
```
echo "" | crontab
```
Stop all processing on the Reporter systems by running the following command as the RUEI_USER user:
```
project -stop
```
In the case of Collector systems, stop data collection by running the following command:
```
appsensor stop wg
```
Remove the installed RUEI RPMs by running the following command as the root user:
```
rpm -qa | grep ˆux- | xargs rpm -e
```
If parts of the installed RPMs were removed manually or corrupted, errors might be encountered in the above step. In this case, you should run the following command:
```
rpm -qa | grep ˆux- | xargs rpm -e --noscripts
```
Part of the installation may remain after running the above command.
On the Reporter system, unistall the php-oci8 module, Oracle database Instant client, PHP configuration, and SQLplus extension by running the following commands as the root user:
```
rm /etc/php.d/ruei.ini
rpm -e php-oci8-11gR2
rpm -e oracle-instantclient11.2-sqlplus
rpm -e oracle-instantclient11.2-basic
```
Ensure that all RUEI daemons are deactivated by running the following commands as the root user:
```
. /etc/ruei.conf
killall -u $RUEI_USER
```
Remove all RUEI data files by running the following commands as the root user:
```
rm -rf $RUEI_HOME
rm -rf $RUEI_DATA
```
Remove each database instance by logging into the required database server(s) as the oracle user, and running the following commands:
```
. /etc/ruei.conf
. oraenv
dbca -silent -deleteDatabase -sourceDB ${RUEI_DB_INST}
```
When prompted for the Oracle SID, you should specify the same value as that for the RUEI_DB_INST setting in the /etc/ruei.conf file.
For Reporter and Collector systems, remove the Java Runtime Environment (JRE) by running the following commands as the root user:
```
rm /usr/java/jre1.7.0_09
rm /usr/java/jre
```
On the Reporter system, edit the /etc/sysconfig/httpd file, and remove the following line that loads the RUEI environment:
```
source /etc/ruei.conf
```
On the Reporter system, restore the original Zend Optimizer configuration file /etc/php.ini by running the following commands as the root user:
```
cd /etc/
cp php.ini-zend_optimizer.bak php.ini
```
Remove the Zend Optimizer installation directory by running the following command:
```
rm -rf /usr/local/Zend
```
Restart the Apache web server running the following command:
```
/etc/init.d/httpd restart
```
Revert the changes made to user and group settings by running the following commands as the root user:
```
. /etc/ruei.conf
userdel $RUEI_USER
groupdel $RUEI_GROUP
usermod -G apache apache
```
Remove the RUEI configuration file /etc/ruei.conf running the following command as the root user:
```
rm /etc/ruei.conf
```

During the installation procedure, you may have installed several additional RPMs. Which of these can safely be removed depends on the original Linux installation. A database installation will remain on each database server. The procedure for uninstalling the Oracle database is fully described in the product documentation.