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POcx_Oracle 'ORA-01843: not a valid month' with unicode parameter
 

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    <p>I have the following: (using ipython)</p> <pre><code>In [30]: con = cx_Oracle.connect('refill_test02/******@MYDB') In [31]: cur = con.cursor() In [32]: cur.execute("ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS' NLS_TIMESTAMP_FORMAT = 'YYYY-MM-DD HH24:MI:SS.FF'") In [33]: cur.execute("select to_date(:0), to_timestamp(:1) from dual", ['2013-03-12', '2013-03-12 08:22:31.332144']) Out[33]: &lt;__builtin__.OracleCursor on &lt;cx_Oracle.Connection to refill_test02@MYDB&gt;&gt; In [34]: cur.fetchall() Out[34]: [(datetime.datetime(2013, 3, 12, 0, 0), datetime.datetime(2013, 3, 12, 8, 22, 31, 332144))] In [35]: cur.execute("select to_date(:0), to_timestamp(:1) from dual", [u'2013-03-12', '2013-03-12 08:22:31.332144']) Out[35]: &lt;__builtin__.OracleCursor on &lt;cx_Oracle.Connection to refill_test02@MYDB&gt;&gt; In [36]: cur.fetchall() Out[36]: [(datetime.datetime(2013, 3, 12, 0, 0), datetime.datetime(2013, 3, 12, 8, 22, 31, 332144))] In [37]: cur.execute("select to_date(:0), to_timestamp(:1) from dual", [u'2013-03-12', u'2013-03-12 08:22:31.332144']) --------------------------------------------------------------------------- DatabaseError Traceback (most recent call last) /home/xxxxx/&lt;ipython-input-37-8af80e5fc40c&gt; in &lt;module&gt;() ----&gt; 1 cur.execute("select to_date(:0), to_timestamp(:1) from dual", [u'2013-03-12', u'2013-03-12 08:22:31.332144']) DatabaseError: ORA-01843: not a valid month In [38]: cur.execute("select to_date(:0), to_timestamp(:1) from dual", [u'2013-03-12', '2013-03-12 08:22:31.332144']) --------------------------------------------------------------------------- DatabaseError Traceback (most recent call last) /home/xxxx/&lt;ipython-input-38-bc628f006aa3&gt; in &lt;module&gt;() ----&gt; 1 cur.execute("select to_date(:0), to_timestamp(:1) from dual", [u'2013-03-12', '2013-03-12 08:22:31.332144']) DatabaseError: ORA-01843: not a valid month In [39]: cur.execute("ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS' NLS_TIMESTAMP_FORMAT = 'YYYY-MM-DD HH24:MI:SS.FF'") In [40]: cur.execute("select to_date(:0), to_timestamp(:1) from dual", [u'2013-03-12', '2013-03-12 08:22:31.332144']) Out[40]: &lt;__builtin__.OracleCursor on &lt;cx_Oracle.Connection to refill_test02@MYDB&gt;&gt; In [41]: cur.fetchall() Out[41]: [(datetime.datetime(2013, 3, 12, 0, 0), datetime.datetime(2013, 3, 12, 8, 22, 31, 332144))] </code></pre> <p>For some reason, I can't use an unicode string for a timestamp parameter (IN[37]), what's even more strange is that after I do it I need to reset the session NLS formats before it works again with a normal string.</p> <p>I'm using: Cx_Oracle 5.1.2 python 2.7.3 Oracle 10.2.0.1.0</p> <p>Any ideas?</p> <p>Thank you for your time on reading this.</p>
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