'ORA-12520, TNS:listener could not find available handler for requested type of server' When Running Multiple Scenarios in Parallel From an ODI Load Plan

(Doc ID 1566704.1)

Last updated on JUNE 14, 2018

Applies to:

Oracle Data Integrator - Version 11.1.1.3.0 and later
Information in this document applies to any platform.

Symptoms

When running an Oracle Data Integrator (ODI) 11g or 12c Load Plan which triggers the execution of multiple Scenarios in parallel, ODI creates an increasing number of database sessions in time and quickly exceeds the database limits resulting in the following message:

ODI-1228: Task INT200.370_LOAD_MY_DATA (Integration) fails on the target ORACLE connection ORACLE_MY_CONNECTION.
Caused By: java.sql.SQLException: Listener refused the connection with the following error:
ORA-12520, TNS:listener could not find available handler for requested type of server

   at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.doGetConnection(LoginTimeoutDatasourceAdapter.java:133)
   at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.getConnection(LoginTimeoutDatasourceAdapter.java:62)
   at oracle.odi.core.datasource.dwgobject.support.OnConnectOnDisconnectDataSourceAdapter.getConnection(OnConnectOnDisconnectDataSourceAdapter.java:74)
   at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:113)
   at com.sunopsis.sql.SnpsConnection.createConnection(SnpsConnection.java:390)
...

Changes

Cause

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