How to fix the Oracle error SQL*Loader-00402: Unable to determine length of column string from specification?

In this post, you’ll learn more about the Oracle ErrorSQL*Loader-00402: Unable to determine length of column string from specification with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

SQL*Loader-00402: Unable to determine length of column string from specification

Reason for the Error SQL*Loader-00402: Unable to determine length of column string from specification

The specified datatype does not have an implied length (for example, a numeric external or RAW datatype), it is not specified with delimiters, no length was specified, and a length cannot be determined from a POSITION clause.

How to fix the Error SQL*Loader-00402: Unable to determine length of column string from specification ?

You can fix this error in Oracle by following the below steps

If a POSITION clause is specified, adding an end location to it produces a length specification. This clause then has the form POSITION(start:end) A length can also specified after the datatype, as in INTEGER EXTERNAL (6) Finally, the field could be specified with delimiters, or the datatype changed to one that has an implied length.