Oracle 19c Client |work| Download

Oracle Client is free for development, testing, and production use with a valid Oracle Database license. No additional license fee is required for the client software itself.

| Error Message | Likely Cause | Solution | |---------------|--------------|----------| | ORA-12154: TNS could not resolve connect identifier | Missing or malformed tnsnames.ora | Set TNS_ADMIN to correct directory. | | ORA-12541: TNS no listener | Database listener not running or wrong port | Start listener: lsnrctl start ; check listener.ora . | | sqlplus: command not found | PATH not updated | Re-source profile or reinstall with correct PATH. | | DLL missing (Windows) | Visual C++ Redistributable not installed | Install VC++ 2015-2022 Redistributable. | | ORA-28040: No matching authentication protocol | Client/server version mismatch | Set SQLNET.ALLOWED_LOGON_VERSION=8 in sqlnet.ora . | oracle 19c client download