I am connecting to an Oracle DB using LDAP and the Python cx_Oracle library. I have proper sqlnet.ora, ldap.ora and tnsnames.ora files. On my Windows machine everything works fine using the 12.1 Oracle client and the following Python code:
import cx_Oracle connection = cx_Oracle.connect(user/password@db, mode=cx_Oracle.SYSDBA)
I have installed the Oracle instant client 12.1 on my Linux machine (Debian) following the zip file installation method advised on the Oracle website (at the bottom of https://www.oracle.com/be/database/technologies/instant-client/linux-x86-64-downloads.html). ldconfig correctly lists the oracle client libraries and their paths.
I copy the exact same sqlnet.ora, ldap.ora and tnsnames.ora files from my Windows machine to my Linux machine in /opt/oracle/instantclient_12_1/network/admin, as advised by the cx_Oracle documentation.
Now running the above Python code on my Linux machine I have the following error:
cx_Oracle.DatabaseError: ORA-12154: TNS:could not resolve the connect identifier specified
I tried as well setting the environment variable TNS_ADMIN=/opt/oracle/instantclient_12_1/network/admin and ORACLE_HOME=/opt/oracle/instantclient_12_1/ with no success neither
Could any of you help me debugging this and understand why the client config on my Linux machine does not work?
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Answer
Installed the latest 19 client and everything works as expected.