The following is the ORA-24411 error message, you can learn the cause and solution of the Oracle database error.

ORA-24411 Session pool already exists.

Cause: A session pool has already been created for the specified pool handle.


  1. Specify a different pool handle to create a new session pool.
  2. If you wish to modify the pool parameters, then call OCISessionPoolCreate in OCI_SPOOL_REINITIALIZE mode.

Please wait for the update…