导入 cx_Oracle 导致 Apache 服务器抛出内部服务器错误

Question

I'm trying to configure the cx_Oracle python module to work with an Apache server on RHL.

I installed the python module and the oracle client on my user account and after some configuration it worked fine (I had to set the LD_LIBRARY_PATH environment variable and create a sym link to libclntsh.so.12.1 ).

Now I wanted to use this module with an Apache server, but after importing it in one of my python scripts the server started throwing a 500 error. The only things I changed in the configuration was setting $LD_LIBRARY_PATH and $ORACLE_HOME as global variables just to be sure and setting the $PYTHON_EGG_CACHE to /tmp so there aren't any permission issues.

After that the server was still not working so I wanted to see what the error is. I run these commands:

sudo su
sudo -u apache python
>>> import cx_Oracle

This worked fine and now I'm really confused about why it's not working on the server. Is there something I'm misunderstanding or doing wrong?

EDIT: Just to clarify, the Apache server is on the same machine as my user account.

Answer 1

Setting the library search path environment variables is often the weak point. How and where you set them depends on your Apache version. In particular sometimes you use shell syntax (and referenced variables get expanded), other times you need absolute paths.

If you have installed Oracle Instant Client (and have no other Oracle software) then just use ldconfig as described in the Instant Client installation instructions (and don't set LD_LIBRARY_PATH or ORACLE_HOME).

Otherwise or RHL you probably want to edit /etc/sysconfig/httpd and add something like:

export LD_LIBRARY_PATH=/home/cjones/instantclient 

or

LD_LIBRARY_PATH=/home/cjones/instantclient

But your boot scripts may be different, so check what you need.