How Data Locks Are Respected in Oracle

Q

How Data Locks Are Respected in Oracle?

✍: FYIcenter.com

A

Here are the rules on how data locks are respected:

  • All statements ignore data locks owned its own transaction.
  • SELECT query statements ignores data locks owned by any transactions.
  • INSERT, UPDATE, and DELETE statements in a READ COMMITTED transaction will wait for data locks on their targeted rows by other transactions to be released.
  • INSERT, UPDATE, and DELETE statements in a SERIALIZABLE transaction will fail if their targeted rows has data locks owned by other transactions.

 

⇒Understanding SQL Transaction Management in Oracle

⇒⇒Oracle Database Tutorials

2016-10-16, 334👍, 0💬

General MySQL Oracle SQL Server