wish to Disable/Enable DDL queries from table (There is no alter, drop, truncate)

Summary 

In production systems changes are often allowed only during special maintenance times, and changes such as DDL to change table/index structures must be prohibited at other times. To disable DDL for a table execute

ALTER TABLE TABLE_NAME DISABLE TABLE LOCK;

This will prevent for example altering the table, or doing a truncate, but select/update/insert will continue working. 

To enable back DDL execute

ALTER TABLE TABLE_NAME ENABLE TABLE LOCK;