The following is the ORA-24401 error message, you can learn the cause and solution of the Oracle database error.
ORA-24401 cannot open further connections
Cause: Sufficient number of connections are not present in the pool to execute the call. No new connections can be opened as the connMax parameter supplied in OCIConnectionPoolCreate has been reached.
Solution: Call OCIConnectionPoolCreate in OCI_CPOOL_REINITIALIZE mode and increase the value of the connMax parameter.
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