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Title
Common Oracle connection issues in Toad for Oracle 10.x & above. Frequently asked questions. -
Description
How to troubleshoot connection errors when logging-in to a supported Oracle database using either a 32-bit or 64-bit Oracle Client.
Common Oracle Connection errors:
- ORA-12154: TNS: could not resolve service name
- ORA-12505 TNS:listener could not resolve SID given in connect descriptor
- ORA-06413: Connection not opened
- Error: 1.0 [Load Interface dlls failed]
- Initialization error: Could not find Oracle_Home\bin\oraXYZ.dll
- Initialization error: Could not locate OCI.dll
- OCI.dll, The specified module could not be found
- You have no Oracle clients installed
- ORA-12557 TNS: protocol not loadable
Also, sometimes (erroneously) searched with these phrases:
Toad will not work.
Toad will not start.
Toad will not install.
Toad cannot connect.
Probable Oracle Net Admin error.
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