You cannot explicitly lock the tables in Netezza. The Netezza SQL, however, uses implicit Netezza table locking when there is a DDL operation on it. For example, drop table command is blocked on the table if a DML commands are running on table and vice versa. Netezza uses the serializable transaction isolation to lock the table and is ACID property compliant. That ensures no dirty reads, no non repeatable reads. Read: How Netezza Updates Records in Table? Netezza Identify and Kill Table Locks nzsql Command and its Usage Netezza Best…