top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration

Facebook Login
Site Registration

What are the types of Locks in Oracle SQL?

+1 vote
106 views
What are the types of Locks in Oracle SQL?
posted Sep 26, 2014 by Vidhya Sagar

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

+1 vote

Locking is a mechanism to ensure data integrity while allowing maximum concurrent access to data. It is used to implement concurrency control when multiple users access table to manipulate its data at the same time.

The two basic types of locks are DML (table) locks, and DDL (dictionary) locks.
DML locks are designed to guarantee data integrity in a multi-user environment. DML locks prevent conflicting DML and DDL operations from interfering with each other’s operations. These locks are generally either table level locks, or row level locks.

Following are different lock types:
1. Table Level Lock
2. Row Level Lock
3. DML Locks in Transactions Enqueue Mechanism
4. DML Locks in Blocks Automatic Table Lock Modes
5. Manual Table Lock Modes
6. Table Partition Locks

answer Sep 27, 2014 by Amit Kumar Pandey
Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Bangalore-560102
Karnataka INDIA.
QUERY HOME
...