ORA-01810: format code appears twice

An uncommon error as this may keep you wondering. Well there is a common practice of defining both Month and Minutes as MM and this is what usually causes this error. Below is a typical example.

SQL> ALTER SESSION SET NLS_DATE_FORMAT='dd/mm/yyyy hh24:mm:ss';
ERROR:
ORA-01810: format code appears twice

Change the date format accordingly you resolve the issue

SQL> ALTER SESSION SET NLS_DATE_FORMAT='dd/mm/yyyy hh24:mi:ss';
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About Sunil Padmanabhan

An Indian based out of Dubai who started traveling from 2011 and pretty much caught the travel bug. Every year presents itself as an opportunity to visit and explore a new place.

Posted on January 23, 2014, in Oracle and tagged , . Bookmark the permalink. Leave a comment.

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