How to fix the Oracle error LSX-00256: empty character class expression?

In this post, you’ll learn more about the Oracle ErrorLSX-00256: empty character class expression with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

LSX-00256: empty character class expression

Reason for the Error LSX-00256: empty character class expression

Cause: “[]” found when processing a character class expression.

How to fix the Error LSX-00256: empty character class expression ?

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

Action: Specify the character group within the brackets.

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