{"id":2987,"date":"2022-03-27T16:26:37","date_gmt":"2022-03-27T09:26:37","guid":{"rendered":"https:\/\/www.sqlservertutorial.net\/?page_id=2987"},"modified":"2022-04-06T07:28:19","modified_gmt":"2022-04-06T00:28:19","slug":"sql-server-transaction-log-backup","status":"publish","type":"page","link":"https:\/\/www.sqlservertutorial.net\/sql-server-administration\/sql-server-transaction-log-backup\/","title":{"rendered":"SQL Server Transaction Log Backup"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you&#8217;ll learn about the transaction log backup and how to restore a database from a transaction log backup.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='introduction-to-the-sql-server-transaction-log-backup'>Introduction to the SQL Server transaction log backup <a href=\"#introduction-to-the-sql-server-transaction-log-backup\" class=\"anchor\" id=\"introduction-to-the-sql-server-transaction-log-backup\" title=\"Anchor for Introduction to the SQL Server transaction log backup\">#<\/a><\/h2>\n\n\n\n<p>When the <a href=\"https:\/\/www.sqlservertutorial.net\/sql-server-administration\/sql-server-recovery-model\/\">recovery model<\/a> of a database is <code>FULL<\/code> or <code>BULK_LOGGED<\/code>, you can back up the transaction log of the database.<\/p>\n\n\n\n<p>Before creating a transaction log backup, you need to create at least one <a href=\"https:\/\/www.sqlservertutorial.net\/sql-server-administration\/sql-server-full-backup\/\">full backup<\/a>. After that, you can create any number of transaction log backups.<\/p>\n\n\n\n<p>It&#8217;s a good practice to take transaction log backups more frequently to:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Minimize the data loss<\/li><li>Truncate the log files<\/li><\/ul>\n\n\n\n<p>Typically, you <a href=\"https:\/\/www.sqlservertutorial.net\/sql-server-administration\/create-a-full-backup-of-a-sql-server-database\/\">create a full backup<\/a> occasionally such as weekly and create a series of <a href=\"https:\/\/www.sqlservertutorial.net\/sql-server-administration\/sql-server-differential-backup\/\">differential backups<\/a> at a shorter interval like daily. Independent of the database backups, you create the transaction log at more frequent intervals such as hourly.<\/p>\n\n\n\n<p>The following picture illustrates transaction log backup:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"578\" height=\"638\" src=\"https:\/\/www.sqlservertutorial.net\/wp-content\/uploads\/SQL-Server-Transaction-Log-Backup.png\" alt=\"SQL Server Transaction Log Backup\" class=\"wp-image-3062\" srcset=\"https:\/\/www.sqlservertutorial.net\/wp-content\/uploads\/SQL-Server-Transaction-Log-Backup.png 578w, https:\/\/www.sqlservertutorial.net\/wp-content\/uploads\/SQL-Server-Transaction-Log-Backup-272x300.png 272w\" sizes=\"auto, (max-width: 578px) 100vw, 578px\" \/><\/figure><\/div>\n\n\n\n<p>In this picture we have:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Two full backups<\/li><li>Three transaction log backups<\/li><\/ul>\n\n\n\n<p>The first full backup contains id 1 and the second full backup contains id 1, 2, and 3.<\/p>\n\n\n\n<p>The first transaction log backup contains id 2 and the second transaction log backup contains id 3, and the third transaction log backup contains id 3.<\/p>\n\n\n\n<p class=\"note\">Note that the transaction log backups do not contain duplicate data like a full backup or differential backup.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='create-a-transaction-log-backup-using-t-sql'>Create a transaction log backup using T-SQL <a href=\"#create-a-transaction-log-backup-using-t-sql\" class=\"anchor\" id=\"create-a-transaction-log-backup-using-t-sql\" title=\"Anchor for Create a transaction log backup using T-SQL\">#<\/a><\/h2>\n\n\n\n<p>To create a transaction log backup, you use the <code>BACKUP LOG<\/code> statement:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">BACKUP<\/span> <span class=\"hljs-keyword\">LOG<\/span> database_name\n<span class=\"hljs-keyword\">TO<\/span> DISK = path_to_backup_file\n<span class=\"hljs-keyword\">WITH<\/span> options;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>In this statement:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>First, specify the name of the database to back up the transaction log. The database must exist and be in an online state.<\/li><li>Second, specify the path to the backup log file. The path must exist in the filesystem.<\/li><li>Third, specify additional backup options in the <code>WITH<\/code> clause.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id='sql-server-transaction-log-backup-example'>SQL Server transaction log backup example <a href=\"#sql-server-transaction-log-backup-example\" class=\"anchor\" id=\"sql-server-transaction-log-backup-example\" title=\"Anchor for SQL Server transaction log backup example\">#<\/a><\/h2>\n\n\n\n<p>Let&#8217;s take an example of taking transaction log backups and recovering the database from them.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id='1-create-a-transaction-log-backup-example'>1) Create a transaction log backup example <a href=\"#1-create-a-transaction-log-backup-example\" class=\"anchor\" id=\"1-create-a-transaction-log-backup-example\" title=\"Anchor for 1) Create a transaction log backup example\">#<\/a><\/h3>\n\n\n\n<p>First, drop the <code>HR<\/code> database:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">USE<\/span> <span class=\"hljs-keyword\">master<\/span>;\n<span class=\"hljs-keyword\">DROP<\/span> <span class=\"hljs-keyword\">DATABASE<\/span> <span class=\"hljs-keyword\">IF<\/span> <span class=\"hljs-keyword\">EXISTS<\/span> HR;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Second, create the new <code>HR<\/code> database:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">CREATE<\/span> <span class=\"hljs-keyword\">DATABASE<\/span> HR;\nGO<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Third, ensure the <code>HR<\/code> database is in the <code>FULL<\/code> recovery mode to perform a transaction log backup:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">ALTER<\/span> <span class=\"hljs-keyword\">DATABASE<\/span> HR \n<span class=\"hljs-keyword\">SET<\/span> <span class=\"hljs-keyword\">RECOVERY<\/span> <span class=\"hljs-keyword\">FULL<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Fourth, create the <code>People<\/code> table and insert a row:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">USE<\/span> HR;\nGO\n\n<span class=\"hljs-keyword\">CREATE<\/span> <span class=\"hljs-keyword\">TABLE<\/span> People (\n  <span class=\"hljs-keyword\">Id<\/span> <span class=\"hljs-built_in\">int<\/span> <span class=\"hljs-keyword\">IDENTITY<\/span> PRIMARY <span class=\"hljs-keyword\">KEY<\/span>,\n  FirstName <span class=\"hljs-built_in\">varchar<\/span>(<span class=\"hljs-number\">50<\/span>) <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-literal\">NULL<\/span>,\n  LastName <span class=\"hljs-built_in\">varchar<\/span>(<span class=\"hljs-number\">50<\/span>) <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-literal\">NULL<\/span>\n);\n\n<span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> People (FirstName, LastName)\n<span class=\"hljs-keyword\">VALUES<\/span> (<span class=\"hljs-string\">'John'<\/span>, <span class=\"hljs-string\">'Doe'<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Fifth, create a full backup:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-6\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">BACKUP<\/span> <span class=\"hljs-keyword\">DATABASE<\/span> HR \n<span class=\"hljs-keyword\">TO<\/span>  DISK = <span class=\"hljs-string\">'D:\\backup\\hr.bak'<\/span>\n<span class=\"hljs-keyword\">WITH<\/span> INIT,\n<span class=\"hljs-keyword\">NAME<\/span> = <span class=\"hljs-string\">'HR-Full Database Backup'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-6\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Sixth, insert one more row into the <code>People<\/code> table:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-7\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> People(FirstName, LastName)\n<span class=\"hljs-keyword\">VALUES<\/span> (<span class=\"hljs-string\">'Jane'<\/span>, <span class=\"hljs-string\">'Doe'<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-7\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Seventh, create the first transaction log backup:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-8\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">BACKUP<\/span> <span class=\"hljs-keyword\">LOG<\/span> HR\n<span class=\"hljs-keyword\">TO<\/span>  DISK = N<span class=\"hljs-string\">'D:\\backup\\hr.bak'<\/span> \n<span class=\"hljs-keyword\">WITH<\/span> <span class=\"hljs-keyword\">NAME<\/span> = N<span class=\"hljs-string\">'HR-Transaction Log Backup'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-8\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Eighth, insert another row into the <code>People<\/code> table:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-9\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> People(FirstName, LastName)\n<span class=\"hljs-keyword\">VALUES<\/span> (<span class=\"hljs-string\">'Upton'<\/span>, <span class=\"hljs-string\">'Luis'<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-9\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Ninth, create the second transaction log backup:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-10\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">BACKUP<\/span> <span class=\"hljs-keyword\">LOG<\/span> HR\n<span class=\"hljs-keyword\">TO<\/span>  DISK = N<span class=\"hljs-string\">'D:\\backup\\hr.bak'<\/span> \n<span class=\"hljs-keyword\">WITH<\/span> <span class=\"hljs-keyword\">NAME<\/span> = N<span class=\"hljs-string\">'HR-Transaction Log Backup'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-10\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Tenth, create the second full backup:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-11\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">BACKUP<\/span> <span class=\"hljs-keyword\">DATABASE<\/span> HR \n<span class=\"hljs-keyword\">TO<\/span>  DISK = <span class=\"hljs-string\">'D:\\backup\\hr.bak'<\/span>\n<span class=\"hljs-keyword\">WITH<\/span> NOINIT,\n<span class=\"hljs-keyword\">NAME<\/span> = <span class=\"hljs-string\">'HR-Full Database Backup'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-11\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Eleventh, insert another row into the <code>People<\/code> table:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-12\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> People(FirstName, LastName)\n<span class=\"hljs-keyword\">VALUES<\/span>(<span class=\"hljs-string\">'Dach'<\/span>, <span class=\"hljs-string\">'Keon'<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-12\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Finally, view the backup file:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-13\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">RESTORE<\/span> HEADERONLY   \n<span class=\"hljs-keyword\">FROM<\/span> DISK = N<span class=\"hljs-string\">'D:\\backup\\hr.bak'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-13\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Output:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"152\" src=\"https:\/\/www.sqlservertutorial.net\/wp-content\/uploads\/SQL-Server-Transaction-Log-Backup-History.png\" alt=\"\" class=\"wp-image-3061\" srcset=\"https:\/\/www.sqlservertutorial.net\/wp-content\/uploads\/SQL-Server-Transaction-Log-Backup-History.png 900w, https:\/\/www.sqlservertutorial.net\/wp-content\/uploads\/SQL-Server-Transaction-Log-Backup-History-300x51.png 300w, https:\/\/www.sqlservertutorial.net\/wp-content\/uploads\/SQL-Server-Transaction-Log-Backup-History-768x130.png 768w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id='2-restore-a-database-from-a-transaction-log-backup'>2) Restore a database from a transaction log backup <a href=\"#2-restore-a-database-from-a-transaction-log-backup\" class=\"anchor\" id=\"2-restore-a-database-from-a-transaction-log-backup\" title=\"Anchor for 2) Restore a database from a transaction log backup\">#<\/a><\/h3>\n\n\n\n<p>To recover the database, you can restore the second full backup (position 4) and the last transaction log backup (position 5).<\/p>\n\n\n\n<p>First, drop the HR database:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-14\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">USE<\/span> <span class=\"hljs-keyword\">master<\/span>;\n<span class=\"hljs-keyword\">DROP<\/span> <span class=\"hljs-keyword\">DATABASE<\/span> HR;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-14\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Second, restore the database from the second full backup:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-15\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">RESTORE<\/span> <span class=\"hljs-keyword\">DATABASE<\/span> HR\n<span class=\"hljs-keyword\">FROM<\/span>  DISK = N<span class=\"hljs-string\">'D:\\backup\\hr.bak'<\/span>\n<span class=\"hljs-keyword\">WITH<\/span> <span class=\"hljs-keyword\">FILE<\/span> = <span class=\"hljs-number\">4<\/span>, NORECOVERY;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-15\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>In this statement, the number 4 specifies the second full backup in the backup file. The <code>NORECOVERY<\/code> puts the database in the restoring state so that you can restore the transaction log backup.<\/p>\n\n\n\n<p>Third, restore the transaction log backup using the <code>RESTORE LOG<\/code> statement:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-16\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">RESTORE<\/span> <span class=\"hljs-keyword\">LOG<\/span> HR\n<span class=\"hljs-keyword\">FROM<\/span> DISK = N<span class=\"hljs-string\">'D:\\backup\\hr.bak'<\/span>\n<span class=\"hljs-keyword\">WITH<\/span> <span class=\"hljs-keyword\">FILE<\/span> = <span class=\"hljs-number\">5<\/span>, <span class=\"hljs-keyword\">RECOVERY<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-16\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>In this statement, the number 5 indicates the last transaction log backup. The RECOVERY indicates that there is no further backup to restore. Hence, the database is accessible after the restoration completes.<\/p>\n\n\n\n<p>Finally, switch the current database to <code>HR<\/code> and select data from the <code>People<\/code> table:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-17\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">USE<\/span> HR;\n<span class=\"hljs-keyword\">SELECT<\/span> * <span class=\"hljs-keyword\">FROM<\/span> people;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-17\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Output:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"229\" height=\"124\" src=\"https:\/\/www.sqlservertutorial.net\/wp-content\/uploads\/SQL-Server-Transaction-Log-Table-Example.png\" alt=\"\" class=\"wp-image-3064\"\/><\/figure>\n\n\n\n<p>The <code>People<\/code> table has four rows indicating that you&#8217;ve successfully recovered the database from the full backup and transaction log backup.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='summary'>Summary <a href=\"#summary\" class=\"anchor\" id=\"summary\" title=\"Anchor for Summary\">#<\/a><\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>To back up a transaction log, the recovery model of the database must be either <code>FULL<\/code> or <code>BULK_LOGGED<\/code>.<\/li><li>A transaction log backup contains a transaction log of a database. <\/li><li>Use the <code>BACKUP LOG<\/code> statement to back up the transaction logs.<\/li><li>Use the <code>RESTORE LOG<\/code> to recover the database from the transaction log backups.<\/li><\/ul>\n<div class=\"helpful-block-content\" data-title=\"\">\n\t<header>\n\t\t<div class=\"wth-question\">Was this tutorial helpful?<\/div>\n\t\t<div class=\"wth-thumbs\">\n\t\t\t<button\n\t\t\t\tdata-post=\"2987\"\n\t\t\t\tdata-post-url=\"https:\/\/www.sqlservertutorial.net\/sql-server-administration\/sql-server-transaction-log-backup\/\"\n\t\t\t\tdata-post-title=\"SQL Server Transaction Log Backup\"\n\t\t\t\tdata-response=\"1\"\n\t\t\t\tclass=\"wth-btn-rounded wth-yes-btn\"\n\t\t\t>\n\t\t\t\t<svg\n\t\t\t\t\txmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n\t\t\t\t\tviewBox=\"0 0 24 24\"\n\t\t\t\t\tfill=\"none\"\n\t\t\t\t\tstroke=\"currentColor\"\n\t\t\t\t\tstroke-width=\"2\"\n\t\t\t\t\tstroke-linecap=\"round\"\n\t\t\t\t\tstroke-linejoin=\"round\"\n\t\t\t\t\tclass=\"feather feather-thumbs-up block w-full h-full\"\n\t\t\t\t>\n\t\t\t\t\t<path\n\t\t\t\t\t\td=\"M14 9V5a3 3 0 0 0-3-3l-4 9v11h11.28a2 2 0 0 0 2-1.7l1.38-9a2 2 0 0 0-2-2.3zM7 22H4a2 2 0 0 1-2-2v-7a2 2 0 0 1 2-2h3\"\n\t\t\t\t\t><\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t<span class=\"sr-only\"> Yes <\/span>\n\t\t\t<\/button>\n\n\t\t\t<button\n\t\t\t\tdata-response=\"0\"\n\t\t\t\tdata-post=\"2987\"\n\t\t\t\tdata-post-url=\"https:\/\/www.sqlservertutorial.net\/sql-server-administration\/sql-server-transaction-log-backup\/\"\n\t\t\t\tdata-post-title=\"SQL Server Transaction Log Backup\"\n\t\t\t\tclass=\"wth-btn-rounded wth-no-btn\"\n\t\t\t>\n\t\t\t\t<svg\n\t\t\t\t\txmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n\t\t\t\t\tviewBox=\"0 0 24 24\"\n\t\t\t\t\tfill=\"none\"\n\t\t\t\t\tstroke=\"currentColor\"\n\t\t\t\t\tstroke-width=\"2\"\n\t\t\t\t\tstroke-linecap=\"round\"\n\t\t\t\t\tstroke-linejoin=\"round\"\n\t\t\t\t>\n\t\t\t\t\t<path\n\t\t\t\t\t\td=\"M10 15v4a3 3 0 0 0 3 3l4-9V2H5.72a2 2 0 0 0-2 1.7l-1.38 9a2 2 0 0 0 2 2.3zm7-13h2.67A2.31 2.31 0 0 1 22 4v7a2.31 2.31 0 0 1-2.33 2H17\"\n\t\t\t\t\t><\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t<span class=\"sr-only\"> No <\/span>\n\t\t\t<\/button>\n\t\t<\/div>\n\t<\/header>\n\n\t<div class=\"wth-form hidden\">\n\t\t<div class=\"wth-form-wrapper\">\n\t\t\t<div class=\"wth-title\"><\/div>\n\t\t\t\n\t\t\t<textarea class=\"wth-message\"><\/textarea>\n\n\t\t\t<button class=\"btn btn-primary wth-btn-submit\">Send<\/button>\n\t\t\t<button class=\"btn wth-btn-cancel\">Cancel<\/button>\n\t\t\n\t\t<\/div>\n\t<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Summary: in this tutorial, you&#8217;ll learn about the transaction log backup and how to restore a database from a transaction log backup. Introduction to the SQL Server transaction log backup # When the recovery model of a database is FULL or BULK_LOGGED, you can back up the transaction log of the database. Before creating a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2903,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2987","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SQL Server Transaction Log Backup<\/title>\n<meta name=\"description\" content=\"In this tutorial, you&#039;ll learn about the transaction log backup and how to restore a database from a transaction log backup.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sqlservertutorial.net\/sql-server-administration\/sql-server-transaction-log-backup\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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