I am upgrading SAP r/3 4.7 to ECC 6.0 on windows 2003 32 bit server. I received error CLIENT_ORACLE_HOME is not set in environment variable. My database is Oracle 188.8.131.52. I have not installed oracle client. Do I require to install the client? I have searched for it in sap market place but could'nt find it. What value shall I give for the environment variable CLIENT_ORACLE_HOME?