How do I view the SQL Server transaction log?

View Log Files

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

What is SQL Server transaction log file?

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.

How do I enable transaction logging in SQL Server?

Navigate to SQL Server Management Studio >> Object Explorer >> <‘SQL Server name’> >> Databases >> right click on <‘user-defined database name’> >> Properties >> Files. Add database transaction log file if one does not exist.

How do I find the transaction log size in SQL Server?

One command that is extremely helpful in understanding how much of the transaction log is being used is DBCC SQLPERF(logspace). This one command will give you details about the current size of all of your database transaction logs as well as the percent currently in use.

What is transaction log?

A transaction log basically records all database modifications. When a user issues an INSERT, for example, it is logged in the transaction log. This enables the database to roll back or restore the transaction if a failure were to occur and prevents data corruption.

Can we delete SQL Server database transaction log file?

In some case, the Microsoft SQL Server Database Transaction Log (. LDF) file becomes very huge. It’s wasting lot of disk space and causing some problems if you want to backup and restore the database. We can delete log file and create a new log file with the minimum size.

How do I add another log file to SQL Server?

In Object Explorer, connect to an instance of the SQL Server Database Engine and then expand that instance. Expand Databases, right-click the database from which to add the files, and then click Properties. In the Database Properties dialog box, select the Files page. To add a data or transaction log file, click Add.

Why is transaction log growing in SQL Server?

SQL Transaction Log Growth. In the heavily transactional systems with excessive logging operations, the SQL Server Transaction Log file will grow rapidly, until it reaches its maximum size, generating error number 9002. And if the auto-growth option is enabled, the underlying disk drive will run out of free space.

What is the purpose of transaction log?

A transaction log is used to record the fact that a transaction is set to occur as well as the information needed by the database server to recover the data back to a consistent state in event of a sever failure while it is writing information to disk.

What does a transaction log include?

The transaction log contains enough information to undo all changes made to the data file as part of any individual transaction. The log records the start of a transaction, all the changes considered to be a part of it, and then the final commit or rollback of the transaction.

What to do if SQL Server transaction log goes bad?

After a hardware loss or disk failure affecting the database files, you can restore the database to the point of failure. You first restore the last full database backup and the last differential database backup, and then restore the subsequent sequence of the transaction log backups to the point of failure.

When to truncate SQL Server transaction log file?

If no Transaction Log backup is taken from the database, the Transaction Log file will grow continuously, without truncation, until it runs out of free space. The SQL Server Transaction Log backup can be taken only from the database when the recovery model of that database is Full or Bulk-Logged.

When to use transaction log backup in SQL Server?

Log backups must be applied in the sequence in which they were created, without any gaps in the log chain. For more information about transaction log backups, see Transaction Log Backups (SQL Server) and Apply Transaction Log Backups (SQL Server).

What are the characteristics of the SQL Server transaction log?

Characteristics of the SQL Server Database Engine transaction log: The transaction log is implemented as a separate file or set of files in the database. The log cache is managed separately from the buffer cache for data pages, which results in simple, fast, and robust code within the Database Engine.

How do I view the SQL Server transaction log?