Database Error Messages

Release
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  • 23ai
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  • 19c
Updated
Jun 24, 2024

ORA-22857

cannot modify columns of object tables

Cause

An attempt was made to alter the object table by modifing existing columns. An object table cannot be altered to modify existing columns since it is based on an object type. The table definition must be in sync with the corresponding type.


Action

Create a new type with the desired attribute types and use it to create an object table. The new object table will have the desired columns.