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ORA-01405: fetched column value is NULL tips

Oracle Error Tips by Donald Burleson(S. Karam)


The Oracle docs note this on the ora-01405 error*:

ORA-01405 fetched column value is NULL
Cause: The INTO clause of a FETCH operation contained a NULL value, and no indicator was used. The column buffer in the program remained unchanged, and the cursor return code was +2. This is an error unless you are running Oracle with DBMS=6, emulating version 6, in which case it is only a warning.
Action: You may do any of the following:
  • Use the NVL function to convert the retrieved NULL to another value, such as zero or blank. This is the simplest solution.
  • Use an indicator to record the presence of the NULL. You probably should use this option when you want a specific action to be taken when a NULL arises.
  • Revise the cursor definition so that no columns possibly containing NULL values are retrieved.

ORA-01405 is thrown when you attempt to execute FETCH, which was returned as a NULL value, but there was no indicator in use.  If you are using Oracle DBMS=6 (version 6) ORA-01405 is only a warning.

You might try resolving ORA-01405 by substituting a value with NVL function when a NULL value appears, or simply construct your cursor so that NULL values are not returned (you may also specify that columns with NULL values are not received).



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