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Connect to Oracle with OCI

Last modified: 20 September 2023

PyCharm uses JDBC drivers to connect to the Oracle server through the TNS protocol.

In thin mode, the JDBC driver always connects to the TNS listener. In this mode, various versions of the JDBC driver can be used.

In OCI mode, the JDBC driver uses native libraries. In this case, the JDBC driver's version must be the same as the version of these native libraries.