Oracle: Changing VARCHAR2 column to CLOB

Question

I have an encountered an issue where the data I was trying to store in my varchar2(4000) column was too big, so I wish to change the column to one more suitable for storing larg

Answer 1

The VARCHAR2 column cannot be directly converted to CLOB but it can be done in 2 steps:

• Convert column datatype from VARCHAR2 to LONG.
• Convert column datatype from LONG to CLOB.

ALTER TABLE table MODIFY column long;
ALTER TABLE table MODIFY column clob;