{"id":16089,"date":"2018-02-15T09:02:15","date_gmt":"2018-02-15T09:02:15","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=16089"},"modified":"2023-09-20T11:53:05","modified_gmt":"2023-09-20T11:53:05","slug":"how-to-fix-sql-database-error-3456","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/how-to-fix-sql-database-error-3456\/","title":{"rendered":"How to Fix SQL Database Error 3456"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>You are a SQL Server Admin, and it is understandable that in your career you may have experienced the SQL database error 3456. This error usually turns your database to a suspect state. A suspect state in a database means that the database has some corruption errors and cannot be online.<\/p><p>You can check the error message using this query in multiple languages:<\/p><p><span style=\"color: #3366ff;\">SELECT *&nbsp;<\/span><span style=\"color: #3366ff;\">FROM master.dbo.sysmessages&nbsp;<\/span><span style=\"color: #3366ff;\">where error =3456<\/span><\/p><p><strong>&nbsp;The messages in different languages are the following:<\/strong><\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"904\" height=\"188\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Error-Message-3456.png\" alt=\"Error Message 3456\" class=\"wp-image-16092 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Error-Message-3456.png 904w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Error-Message-3456-300x62.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Error-Message-3456-768x160.png 768w\" sizes=\"auto, (max-width: 904px) 100vw, 904px\" \/><\/figure>\n<\/div><p>The error message 3456 is the following:<\/p><figure class=\"wp-block-table\"><table><tbody><tr><th><em><span style=\"color: #ff6600;\"> spid41s Error: 3456, Severity: 21, State: 1.<\/span><\/em><br>\n<em><span style=\"color: #ff6600;\"> spid41s Could not redo log record (#), for transaction ID (#), on page (#), database &lsquo;mydb&rsquo; (5). Page: LSN = (#), allocation unit = #, type = #. Log: OpCode = #, context #, PrevPageLSN: (#). Restore from a backup of the database or repair the database.<\/span><\/em><\/th><\/tr><\/tbody><\/table><\/figure><p>In the above error message, Severity 21 means that there is a system error or fatal error. The connection to the database may fail in this state. This error message indicates that error is related to LSN (Allocation error) where <strong>LSN is the log sequence number<\/strong>.<\/p><h2 class=\"wp-block-heading\" id=\"causes-of-sql-database-error-3456\"><strong>Causes of SQL Database error 3456<\/strong><\/h2><p>This error message occurs when it is not possible to redo the transaction log or when we try to recover a database. During this process, the transaction log may have problems. If you have a backup of the database, you can try to restore it and verify if it works. Another alternative would be to try to repair the database. You could try for example to repair using the DBCC CHECKDB:<\/p><p><span style=\"color: #3366ff;\">DBCC CHECKDB (DB_NAME, REPAIR_REBUILD);<\/span><\/p><p>For more information, try to check the event viewer. To do this, press the search icon and write event:<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"397\" height=\"535\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Event-Viewer.png\" alt=\"Event Viewer\" class=\"wp-image-16094 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Event-Viewer.png 397w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Event-Viewer-223x300.png 223w\" sizes=\"auto, (max-width: 397px) 100vw, 397px\" \/><\/figure>\n<\/div><p>In the event viewer, go to <strong>Windows Logs<\/strong>&gt;<strong>Application<\/strong> and look for the Events with the source MSSQL tips. You may find more tips related to the problem of the database:<\/p><figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"834\" height=\"311\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Windows-log-application-1.png\" alt=\"Windows log application\" class=\"wp-image-16096 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Windows-log-application-1.png 834w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Windows-log-application-1-300x112.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Windows-log-application-1-768x286.png 768w\" sizes=\"auto, (max-width: 834px) 100vw, 834px\" \/><\/figure><h2 class=\"wp-block-heading\" id=\"how-can-we-solve-this-error?\"><strong>How can we solve this error?<\/strong><\/h2><p>There are following ways to fix SQL database error 3456, and these are:<\/p><ol class=\"wp-block-list\">\n<li>Using SQL Server Management Studio (SSMS)<\/li>\n\n\n\n<li>T-SQL Command<\/li>\n\n\n\n<li>SQL database repair software<\/li>\n<\/ol><p>Let&rsquo;s discuss these options one by one.<\/p><h3 class=\"wp-block-heading\"><span style=\"text-decoration: underline;\"><strong>Solution 1: Using SSMS<\/strong><\/span><\/h3><ol class=\"wp-block-list\">\n<li>If you have a backup, you can run a simple restore statement. You can use the <strong>SSMS<\/strong>.In <strong>Databases<\/strong>, right click and select <strong>Restore Database<\/strong>:<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"486\" height=\"184\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/restore-database.png\" alt=\"restore database\" class=\"wp-image-16097 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/restore-database.png 486w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/restore-database-300x114.png 300w\" sizes=\"auto, (max-width: 486px) 100vw, 486px\" \/><\/figure>\n<\/div><ol class=\"wp-block-list\" start=\"2\">\n<li>In Restore Database, press the <strong>browse<\/strong> button in the device section to select a device:<\/li>\n<\/ol><figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"866\" height=\"584\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/select-the-database.png\" alt=\"select the database\" class=\"wp-image-16098 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/select-the-database.png 866w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/select-the-database-300x202.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/select-the-database-768x518.png 768w\" sizes=\"auto, (max-width: 866px) 100vw, 866px\" \/><\/figure><ol class=\"wp-block-list\" start=\"3\">\n<li>In the Select Backup devices, select your device. If you do not have a device, press the <strong>Add<\/strong> button:<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"372\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/add-the-database.png\" alt=\"add the database\" class=\"wp-image-16099 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/add-the-database.png 500w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/add-the-database-300x223.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div><ol class=\"wp-block-list\" start=\"4\">\n<li>Select the backup file and press <strong>OK<\/strong>:<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"639\" height=\"472\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/select-the-backup-file.png\" alt=\"select the backup file\" class=\"wp-image-16101 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/select-the-backup-file.png 639w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/select-the-backup-file-300x222.png 300w\" sizes=\"auto, (max-width: 639px) 100vw, 639px\" \/><\/figure>\n<\/div><ol class=\"wp-block-list\" start=\"5\">\n<li>In this example, a tail-log backup will be created before restoring. A warning message will be displayed:<\/li>\n<\/ol><figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"861\" height=\"585\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/tail-log-backup.png\" alt=\"tail log backup\" class=\"wp-image-16100 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/tail-log-backup.png 861w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/tail-log-backup-300x204.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/tail-log-backup-768x522.png 768w\" sizes=\"auto, (max-width: 861px) 100vw, 861px\" \/><\/figure><h3 class=\"wp-block-heading\"><span style=\"text-decoration: underline;\"><strong>Solution 2: Using T-SQL<\/strong><\/span><\/h3><p>If you prefer to use T-SQL, the sentences required will be similar to the following:<\/p><p><span style=\"color: #3366ff;\">USE [master]<\/span><\/p><p><span style=\"color: #3366ff;\">BACKUP LOG [db1] TO&nbsp; DISK = N&rsquo;C:\\Program Files\\Microsoft SQL Server\\MSSQL13.MSSQLSERVER\\MSSQL\\Backup\\db1_LogBackup_2018-02-13_05-17-11.bak&rsquo; WITH NOFORMAT, NOINIT,&nbsp; NAME = N&rsquo;db1_LogBackup_2018-02-13_05-17-11&prime;, NOSKIP, NOREWIND, NOUNLOAD,&nbsp; NORECOVERY ,&nbsp; STATS = 5<\/span><\/p><p><span style=\"color: #3366ff;\">RESTORE DATABASE [db1] FROM&nbsp; DISK = N&rsquo;C:\\Program Files\\Microsoft SQL Server\\MSSQL13.MSSQLSERVER\\MSSQL\\Backup\\db1.bak&rsquo; WITH&nbsp; FILE = 2,&nbsp; NOUNLOAD,&nbsp; STATS = 5<\/span><\/p><p><span style=\"color: #3366ff;\">&nbsp;GO<\/span><\/p><p>We will restore the master database first, and if it is necessary then, we will run a tail log backup. After this, we will restore the database.<\/p><p><strong>If your back up is not updated or it is corrupted then you can try the following solution:<\/strong><\/p><p><span style=\"color: #3366ff;\">ALTER DATABASE mydb SET ONLINE;<\/span><\/p><p>&nbsp;It<b>&nbsp;<\/b>will try to bring your database online again. You can verify if your database is online by using the following query:<\/p><p><span style=\"color: #3366ff;\">select <\/span><span style=\"color: #3366ff;\">name,state_desc&nbsp;&nbsp;<\/span><span style=\"color: #3366ff;\">from sys.databases<\/span><\/p><p>Also, you can verify the SQL Error Log:<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"284\" height=\"290\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/sql-server-logs.png\" alt=\"sql server logs\" class=\"wp-image-16102 apply-gradient-on-post-images\"><\/figure>\n<\/div><p>It is also possible to rebuild the database. Use the SQL Server installer and in the command prompt run the Setup using the REBUILDDATABASE. You will also need to specify a <strong>login and a password<\/strong>:<\/p><p><span style=\"color: #3366ff;\">Setup \/QUIET \/ACTION=REBUILDDATABASE \/INSTANCENAME=MyInstance \/SQLSYSADMINACCOUNTS=sa \/SAPWD= $tro0ngpassword&nbsp; <\/span><\/p><p>After rebuilding the databases, you may need to restore them again from the last backups available.<\/p><h3 class=\"wp-block-heading\"><strong><span style=\"text-decoration: underline;\">Solution 3: Using Stellar Repair for MS SQL<\/span><\/strong><\/h3><p>The alternative solution is to use <strong>Stellar Repair for MS SQL<\/strong>. This software is used to&nbsp;<a href=\"https:\/\/www.stellarinfo.com\/sql-database-repair.php\">repair damaged SQL database<\/a>&nbsp;and if your database is in suspect status, this software may help to fix the problem. You can download the software by Free Download button:<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><a href=\"https:\/\/cloud.stellarinfo.com\/StellarRepairforMSSQL-Blog.exe\"><img loading=\"lazy\" decoding=\"async\" width=\"252\" height=\"72\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/04\/free-download-1-1.png\" alt=\"free download\" class=\"wp-image-77716 apply-gradient-on-post-images\"><\/a><\/figure>\n<\/div><ol class=\"wp-block-list\">\n<li>This software requires stopping the SQL Server Service. Once stopped, you can open the Stellar Repair for MS SQL.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"518\" height=\"356\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Select-SQL-Database.jpg\" alt=\"Stellar\" class=\"wp-image-38203 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Select-SQL-Database.jpg 518w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Select-SQL-Database-300x206.jpg 300w\" sizes=\"auto, (max-width: 518px) 100vw, 518px\" \/><\/figure>\n<\/div><ol class=\"wp-block-list\" start=\"2\">\n<li>You will need to select the MDF file. The MDF file is the main data file that contains the database information. Once selected the MDF file, press <strong>Repair:<\/strong><\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"519\" height=\"359\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/04\/Repair-selected-sql-database.jpg\" alt=\"Stellar\" class=\"wp-image-38221 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/04\/Repair-selected-sql-database.jpg 519w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/04\/Repair-selected-sql-database-300x208.jpg 300w\" sizes=\"auto, (max-width: 519px) 100vw, 519px\" \/><\/figure>\n<\/div><ol class=\"wp-block-list\" start=\"3\">\n<li>Once repaired, you will receive a <strong>success message<\/strong>:<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"141\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Repair-Completed.jpg\" alt=\"Stellar\" class=\"wp-image-38231 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Repair-Completed.jpg 450w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2018\/02\/Repair-Completed-300x94.jpg 300w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/figure>\n<\/div><ol class=\"wp-block-list\" start=\"4\">\n<li>You can also check the preview of repairable database objects:<\/li>\n<\/ol><h2 class=\"wp-block-heading\" id=\"conclusion\"><strong>Conclusion<\/strong><\/h2><p>In this article, we have learnt about the SQL Server error 3456. This error can have the SQL Server Database in the suspect state. We also learned different solutions to solve this problem. One of the solutions was to restore the database. The other solution was to alter the database and set online.<\/p><p>If none of these solutions works, it is possible to use <strong>Stellar Repair for MS SQL <\/strong>or <a href=\"https:\/\/www.stellarinfo.com\/sql-recovery.php\">SQL recovery software<\/a> to repair and recover the .MDF and have this database ready to use.<\/p><p>This software is easy to learn and saves a lot of time. It is <a href=\"https:\/\/www.stellarinfo.com\/mvp-reviews-testimonials.php?product=sql-database\" target=\"_blank\" rel=\"noopener noreferrer\">recommended by Microsoft MVPs<\/a>. If you have more questions about this Error and how to fix it, feel free to write your comments.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>You are a SQL Server Admin, and it is understandable that in&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/how-to-fix-sql-database-error-3456\/\">Continue reading <span class=\"screen-reader-text\">How to Fix SQL Database Error 3456<\/span><\/a><\/p>\n","protected":false},"author":15,"featured_media":16091,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[756],"class_list":["post-16089","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-database-recovery","tag-sql-database-error-3456","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to fix SQL Database error 3456<\/title>\n<meta name=\"description\" content=\"SQL Database error 3456 is repairable with simple these simple methods. 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