What is the use of transaction log?

In the field of databases in computer science, a transaction log (also transaction journal, database log, binary log or audit trail) is a history of actions executed by a database management system used to guarantee ACID properties over crashes or hardware failures.

What is the use of log files in database systems?

In combination with database backups, they are used to recover the consistency of the database right up to the point in time when an error occurs. Some logs, called active or primary logs, contain transactions which have not been committed to the database. These logs are stored in the primary database log path.

How do I view a SQL transaction log?

View Log Files

1. Right-click SQL Server Logs, point to View, and then click either SQL Server Log or SQL Server and Windows Log.
2. Expand SQL Server Logs, right-click any log file, and then click View SQL Server Log. You can also double-click any log file.

How do I view SQL database logs?

View the logs

1. In SQL Server Management Studio, select Object Explorer.
2. In Object Explorer, connect to an instance of SQL Server, and then expand that instance.
3. Find and expand the Management section (assuming you have permissions to see it).
4. Right-click SQL Server Logs, select View, and then choose SQL Server Log.

What is log file in SQL Server database?

A transaction log is a file – integral part of every SQL Server database. It contains log records produced during the logging process in a SQL Server database. The transaction log is the most important component of a SQL Server database when it comes to the disaster recovery – however, it must be uncorrupted.

Where is transaction log in SQL Server?

The transaction log is an integral part of SQL Server. Every database has a transaction log that is stored within the log file that is separate from the data file.

Why do we need transactions in database?

The primary benefit of using transactions is data integrity. Many database uses require storing data to multiple tables, or multiple rows to the same table in order to maintain a consistent data set. Using transactions ensures that other connections to the same database see either all the updates or none of them.

What is a SQL transaction log?

Every SQL Server database has a transaction log that records all transactions and the database modifications made by each transaction. The transaction log is a critical component of the database. If there is a system failure, you will need that log to bring your database back to a consistent state.