When I configure the PowerCenter Integration Service to load multiple partitions of a Siebel target, the session fails with the following error:

[OMRPC Request <Request ID> on connection <connection ID> was abandoned after <milliseconds> ms because it timed out.]

Create the siebel.properties file and increase the values for the following connection parameters:
siebel.conmgr.sesstimeout. The Siebel server waits for the specified number of seconds before disconnecting an idle client session. The value for the parameter must be a positive integer. Default is 2700 seconds.
siebel.conmgr.poolsize. The Siebel server maintains a pool of open connections for each object manager process and shares the pool with all users of that process. Set the maximum number of connections that can be stored in a pool to a value between 1 and 499. Default is 2.
Copy the siebel.properties file to the following directory:
<PowerCenter Installation Directory>\server\bin\javalib
In the Administrator tool, append the directory path of the siebel.properties file in the Java SDK Classpath property for the PowerCenter Integration Service process.

When I configure the EIM task to run in Synchronous mode, the session fails with the following error:

[CMGR WARNING] Removing connection pool <connection string>/!1.cfc

Create the siebel.properties file.
Increase the value for the siebel.conmgr.txtimeout connection parameter.
The PowerCenter Integration Service waits for the configured number of milliseconds after sending a request to the Siebel Server. The value for the parameter must be a positive integer. Default is 600000 milliseconds.
Copy the siebel.properties file to the following directory:
<PowerCenter Installation Directory>\server\bin\javalib
n the Administrator tool, append the directory path of the siebel.properties file in the Java SDK ClassPath property for the PowerCenter Integration Service process.