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POcx_Oracle error ORA-24315 when connecting ... sometimes
 

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  1. POcx_Oracle error ORA-24315 when connecting ... sometimes
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    <p>I wrote a script and ran it on desktop 'A' which targeted an Oracle db (10g) and an app server on desktop 'B'. It ran without any problems.</p> <p>I then copied the script over to desktop 'B' and it spat out the following: 'ORA-24315: illegal attribute type' at the following snippet:</p> <pre><code>cx_dsn = cx_Oracle.makedsn(cx_hostname, cx_port, cx_SID) cx_connection = cx_Oracle.Connection(cx_username + '/' + cx_password + '@'+ cx_dsn ) </code></pre> <p>Both machines were configured as follows:</p> <ul> <li>Windows 7 (64-bit) </li> <li>32-bit version of Python (ActiveState) </li> <li>pypm install cx-oracle (Which resulted in version cx_Oracle.clientversion() = (11, 2, 0, 3, 0) - Yes this does indicate v11 but it worked against the 10g version from Desktop 'A')</li> </ul> <p>Desktop 'B' however had Oracle 10g and WebSphere 7 installed - Desktop 'A' did not</p> <p>I have searched and lots of people have encountered this problem or something similar but in general the only suggested solutions were:</p> <ol> <li>Ensure that the path doesn't reference Oracle libraries before the Python libraries - I guess the suggestion here is that the Oracle install on desktop B is inteferring. So I configured the path so that it only referenced Python (no mention of Oracle etc) - that didn't help</li> <li>Make sure you are using 32 bit version of everything or 64 bit version of everything - I did, 32 bit across the board as far as Python was concerned</li> <li>Ensure that the cx-Oracle matches the db you are targeting ... ok it looks like I have a problem but ... The strange thing is that the script does work on desktop 'A' so I imagine it must be something environmental on desktop 'B'. So off I go and install a dedicated 10g version of cx_Oracle. No success either. (This query <a href="https://stackoverflow.com/questions/10456598/cx-oracle-multiple-instances-of-oracle-10-and-11-plus-oracle-home">https://stackoverflow.com/questions/10456598/cx-oracle-multiple-instances-of-oracle-10-and-11-plus-oracle-home</a> wasn't answered but sounds similar in nature)</li> </ol> <p>So I am stuck - any suggestions?</p>
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    1. USCommunity
    1. USbelvoir
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    1. COMake sure all your variables and literals are byte strings and not unicode strings. It may be that.
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      1. POcx_Oracle error ORA-24315 when connecting ... sometimes
      1. USPedro Romano
    2. COI tried that and verified that it most definitely not a unicode string issue. I repeated the install on a clean XP machine and it worked without a problem connecting to Desktop 'B' so cx_Oracle must be picking up something from the Oracle db install locally on Desktop 'B' - when I get a resolution I will post the solution.
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      1. USbelvoir
 

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