Collections:
What Is a READ ONLY Transaction in Oracle
What Is a READ ONLY Transaction in Oracle?
✍: FYIcenter.com
A READ ONLY transaction is a transaction in which the read consistency is set at the transaction level. In a READ ONLY transaction, a logical snapshot of the database is created at the beginning of the transaction and released at the end of the transaction. This guaranties that all reads in all statements within this transaction get consistent data from the database.
For example, if you have a transaction with many statements that takes 10 hours to be executed, a snapshot of the database will be created for this transaction for 10 hours. If a query statement is executed at the beginning of the transaction and at the end of the transaction, it will return the same result guarantied. In another word, data changes made during this 10 hours by other users will not impact the execution of statements within this transaction.
⇒ Set a READ ONLY Transaction in Oracle
⇐ What Is a READ WRITE Transaction in Oracle
2019-08-23, 1639🔥, 0💬
Popular Posts:
What Is the Difference Between GETDATE() and GETUTCDATE() in SQL Server Transact-SQL? The difference...
What is sqlservr.exe - Process - SQL Server (SQLEX?PRESS) in SQL Server? Process sqlservr.exe is the...
How To Calculate DATETIME Value Differences Using the DATEDIFF() Function in SQL Server Transact-SQL...
How To Convert Numeric Values to Integers in SQL Server Transact-SQL? Sometimes you need to round a ...
How To Update Multiple Rows with One UPDATE Statement in SQL Server? If the WHERE clause in an UPDAT...