Cx_Oracle.InterfaceError:unable to acquire envirnoment handle

Question

Hi all,
I am facing this issue with cx_Oracle error like cx_Oracle.InterfaceError:unable to acquire envirnoment handle
using cx_Oracle for windows platform with python version 2.6 . i haved dowload the cx_Oracle with version cx_Oracle-5.0.4-10g win32 py26.msi which is in binary and installed.
Inside the python folder LIB/site packages i found cx_Oracle.pyd file was present with help of this i am able to import the cx_oracle from python prompt
>>import cx_Oracle
This is working fine and its is importing but whenl i am trying to connect to the database through this
>>cx_Oracle.connect()
also with >>cx_Oracle("abc/abc@ORCL")
Traceback <most recent call last>
file "<stdin">,line 1 in <module>
cx_Oracle.InterfaceError:unable to acquire envirnoment handle --> ii am facing this issue i have set the environment path of ORACLE_HOME but still i am facing this issue not able to connect to database
The same which works fine with instanclient version 10.2 without python i am able to connect to database with help of cx_Oracle.connect() but its not same in the python prompt
as i have set all path but still i am facing this issue.
i am using instantclient10g version
os:32bit machine both xp & server2003
location cx_Oracle i downloaded: http://prdownloads.sourceforge.net/cx-oracle/cx_Oracle-5.0.4-10g-unicode.win32-py2.6.msi?download
let me know if any more path or dll i have to include in the python folder
regards
pavanbabu
Edited by: user11419695 on Aug 4, 2010 5:02 AM

Answer 1

I met this issue too and I fixed it.
The issue is that there were several copy of "OCI.dll" exist in different plance and they belong to different Oracle version. I remove the other version's OCI and the app works fine.
Also I use the following setup.py
from distutils.core import setup
import py2exe, sys
sys.argv.append('py2exe')
setup(
options = {'py2exe': {
'bundle_files': 2,
'compressed': True,
'dll_excludes': ["oci.dll"]
console = [{'script': "test.py"}],
zipfile = None
)