In some cases, oci.dll errors could indicate a registry problem, a virus or malware issue, or even a hardware failure.
Oci.dll Errors
There are several ways that oci.dll errors can show up on your computer. Here are some of the more common ones:
Oci.dll Not FoundThis application failed to start because oci.dll was not found. Re-installing the application may fix this problem.Cannot find [PATH]\oci.dllCannot find OCI DLLFailed to load OCI DLLCannot load OCI DLL: [PATH]The file oci.dll is missing.Cannot start [APPLICATION]. A required component is missing: oci.dll. Please install [APPLICATION] again.
These error messages might appear while using or installing certain programs or when Windows starts or shuts down. However, it usually has to do with an Oracle application. The context of the oci.dll error is an important piece of information that will be helpful while solving the problem.
How to Fix Oci.dll Errors
If you suspect this, and you’re sure it was working fine when you deleted it (i.e., it wasn’t malicious), you might be able to recover it with a free file recovery program. Try your best to complete this step; it’s the likely fix for this error. Find this key: Then, right-click ORACLE and choose to make a new key called Z_SSIS. Right-click that new key and make a new string called ORACLE_HOME. Open that string and set the value to the location of the 32-bit installation of Oracle. There’s both a 32-bit version and a 64-bit version of the redistributable, so follow the x86 (32-bit) or x64 (64-bit) link to get either through that download page.