How to fix the Oracle error PLW-07204: conversion away from column type may result in sub-optimal query plan?

In this post, you’ll learn more about the Oracle ErrorPLW-07204: conversion away from column type may result in sub-optimal query plan with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PLW-07204: conversion away from column type may result in sub-optimal query plan

Reason for the Error PLW-07204: conversion away from column type may result in sub-optimal query plan

The column type and the bind type do not exactly match. This may result in the column being converted to the type of the bind variable. This type conversion may prevent the SQL optimizer from using any index the column participates in. This may adversely affect the execution performance of this statement.

How to fix the Error PLW-07204: conversion away from column type may result in sub-optimal query plan ?

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

To make use of any index for this column, make sure the bind type is the same type as the column type.