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JDBC Connection to the Database Using VPN Fails with ORA-12516 (Doc ID 2977802.1)

Last updated on OCTOBER 05, 2023

Applies to:

JDBC - Version 19.3 and later
Information in this document applies to any platform.

Symptoms

Java application using Oracle JDBC to connect to a database via VPN fails with error:

ORA-12516, TNS:listener could not find available handler with matching protocol stack
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:489)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:553)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:254)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:528)

 

Cause

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In this Document
Symptoms
Cause
Solution
References


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