Oracle implicit data conversion
- From: "David Boyd" <davidb158@xxxxxxxxxxx>
- To: Oracle-L@xxxxxxxxxxxxx
- Date: Tue, 01 Nov 2005 16:28:43 -0500
Hi All,
I have an audit trigger on a table, which an update on the table will
trigger inserting the field_name, old_value and new_value into the audit
table. The type of one of the fields in audited table is date and the type
of old_value and new_value is varchar2(4000). When I update the date field,
Oracle does implicit data conversion to insert the date value to old_value
and new_value fields in the audit table. The formate of date field is
'MM/DD/YYYY HH:MI:SS AM' (all nsl parameters are set to U.S. default). The
format of old_value and new_value was 'DD/MM/YYYY HH:MI:SS AM'. However the
format of old_value and new_value becomes to '01-NOV-05' today suddenly. It
seems no body made any changes into the database. Does any body have an
idea why? I know the best practice is to use explicit conversion. But in
the mean time, is there any thing I can set for Oracle implicit data
conversion?
Thanks for any input in advance.
Dave
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