在64位Linux机器上以32位运行Python脚本以使用32位客户端连接到Oracle DB

Question

I am trying to set up a cronjob that executes a python (3.6) script every day at a given time that connects to an oracle 12g database with a 32 bit client (utilizing the cx_Oracle and sqlalchemy libs). The code itself was developed on a win64 bit machine.

However, when trying to deploy the script onto an Ubuntu 16.04 server, I run into a dilemma when it comes to 32 vs 64 bit architectures.

• The server is based on a 64 bit architecture
• The oracle db is accessible via a 32 bit client
• my current python version on ubuntu is based on 64 bit and I spent about an hour of how to get a 32 bit version running on a 64 bit linux machine without much success.

The error I receive at this moment when trying to run the python script refers to the absence of an oracle client (DPI-1047). However, I already encountered a similar problem in windows when it was necessary to switch the python version to the 32 bit version and to install a 32 bit oracle client.

Is this also necessary in the ubuntu case or are there similar measurements needed to be taken? and if so, how do I get ubuntu to install and run python3.6 in 32 bit as well as the oracle client in 32 bit?

Answer 1

I am a bit confused about your question but this should give some clarification:

• A 32-bit client can connect to a 64-bit Oracle database server - and vice versa
• You can install and run 32-bit applications on a 64-bit machine - this is at least valid for Windows, I don't know how it works on Linux.
• Your application (the python in your case) must have the same "bitness" as installed Oracle Client.