Cx_Oracle: ImportError: DLL Load Failed: The Specified Procedure Could Not Be Found

I have suddenly got a problem that I can no longer import cx_Oracle in python. I know that a lot of people have had a similar error message as mine, which is: The specified PROCEDU

Solution 1:

Please install according to Instant Client 12.1 requirement from https://www.oracle.com/de/database/technologies/instant-client/winx64-64-downloads.html

the required Visual Studio VS 2010 redistributable libraries for VS2010 SP1 and C++

https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

and bounce machine