ORA-01449
Column contains NULL values. Cannot alter column to NOT NULL.
Cause
An ALTER TABLE MODIFY statement attempted to change the column definition to NOT NULL when NULL values were present in the column.
Action
Set all NULL values in the column to values other than NULL before attempting the ALTER TABLE MODIFY statement. You must not have NULL values in a column you want to modify to NOT NULL.
ORA-01449
column contains NULL values; cannot alter to NOT NULL
Cause
An ALTER TABLE MODIFY statement attempted to change the definition of a column containing NULL values to NOT NULL. The column may not currently contain any NULL values if it was to be altered to NOT NULL.
Action
Set all NULL values in the column to values other than NULL before ALTERING the column to NOT NULL.
ORA-01449
column contains NULL values; cannot alter to NOT NULL
Cause
An ALTER TABLE MODIFY statement attempted to change the definition of a column containing NULL values to NOT NULL. The column may not currently contain any NULL values if it was to be altered to NOT NULL.
Action
Set all NULL values in the column to values other than NULL before ALTERING the column to NOT NULL.
