ORA-01451
column to be modified to NULL cannot be modified to NULL
Cause
the column may already allow NULL values, the NOT NULL constraint is part of a primary key or check constraint.
Action
if a primary key or check constraint is enforcing the NOT NULL constraint, then drop that constraint.
ORA-01451
column to be modified to NULL cannot be modified to NULL
Cause
the column may already allow NULL values, the NOT NULL constraint is part of a primary key or check constraint.
Action
if a primary key or check constraint is enforcing the NOT NULL constraint, then drop that constraint.
ORA-01451
column to be modified to NULL cannot be modified to NULL
Cause
the column may already allow NULL values, the NOT NULL constraint is part of a primary key or check constraint.
Action
if a primary key or check constraint is enforcing the NOT NULL constraint, then drop that constraint.