Implementing Siebel Business Applications on DB2 for z/OS > Preparing for Implementation on the DB2 Host > Configuring DB2 Connect >

Setting the DB2CONNECT_IN_APP_PROCESS Environment Variable

The DB2 Connect system environment variable, DB2CONNECT_IN_APP_PROCESS, determines whether or not DB2 Connect clients running on a DB2 Connect EE server must run within an agent. When this variable is set to NO, local clients have to run within an agent. The default value for the DB2CONNECT_IN_APP_PROCESS variable is YES.

You can use DB2 Connect simply as a means of allowing a Siebel application to connect to the Siebel database on the z/OS host. Alternatively, you can implement the following features of z/OS provided by DB2 Connect with Siebel Business Applications:

• Connection load balancing across Sysplex members
• Connection pooling
• Connection concentration

To enable these features when DB2 Connect is located with your Siebel Business Applications, you must set the DB2 environment variable, DB2CONNECT_IN_APP_PROCESS, to NO.

For additional information on DB2 Connect features and the DB2CONNECT_IN_APP_PROCESS variable, refer to the relevant IBM documentation. For additional information on connection concentration, see Setting DB2 Connect EE Configuration Options. For additional information on server clustering for the Siebel database, see the topic on server clustering in Siebel Deployment Planning Guide.