Installation and Upgrade Guides › Web Agent Installation Guide › Upgrade a Web Agent to r12.0 SP2 › How to Prepare for a Web Agent Upgrade › Ensure LD_PRELOAD Variable Does Not Conflict with Existing Agent

Ensure LD_PRELOAD Variable Does Not Conflict with Existing Agent

If you are upgrading or reinstalling a Web Agent on a Linux system, from the shell, set the LD_PRELOAD variable so that it points to a different location from any existing Web Agent installation directory. For example, if an existing LD_PRELOAD entry is set to:

LD_PRELOAD=web_agent_home/bin/libbtunicode.so

Before you reinstall or upgrade, set the variable to:

export LD_PRELOAD=

This entry sets the variable to a blank value.