Connect the SQLite database with firedac, bind the field name to the space tdbedit, and the following statement will report an error when modifying its value

procedure   TForm1.Button3Click(Sender:   TObject);
begin

  fdquery.Edit;
  fdquery.FieldByName(‘name’).AsString:=’test2′;
  fdquery.post;    // An error is reported here  [ FireDAC][Phys][SQLite]   ERROR:   database   is   locked.   It’s the same with refresh

end;

Set connection parameters for SQLite   LockingMode=normal   Solved