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tonkiking · 3 years ago

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Snap assist windows table mode

#Snap assist windows table mode how to

You can determine if the database is corrupted or not by running the following DBCC CHECKDB command. Step 4: A suspect database might not be corrupted. NOTE: If you cannot set the database in emergency mode, skip to the next solution. Step 3: In the Query editor window, enter the following code to turn off the suspect flag on the database and set it to EMERGENCY: EXEC sp_resetstatus ‘db_name’ ĪLTER DATABASE db_name SET EMERGENCY Figure 4: Set Database in Emergency Mode Step 1: Open SSMS and connect to the database. If the backup is not available, proceed with the following steps.įollow the steps in sequence given below to recover MS SQL database from suspect mode: NOTE: You can try restoring the database in suspect mode from a good known backup. How to get SQL database out of suspect mode? Database files are being held by the operating system, third-party backup software, etc.SQL cannot complete a rollback or roll forward operation.SQL Server tries to open a database, and the file belonging to that database is already open by anti-virus software installed on your system.SQL server crashes or restarts in the middle of a transaction, resulting in a corrupt or inaccessible transactions log file.System fails to open the device where the data or log file of SQL server resides.When SQL server suspects the primary filegroup of the database to be damaged or if the database file is missing, the database status is set to ‘Suspect’.Īlso, there are a wide range of errors that could result in SQL database in suspect mode. When does SQL database goes to suspect mode? Figure 1: Database in Suspect ModeĬheck out the Infographic below for quick solutions to recover database from suspect mode in SQL Server 2008, and higher versions. In such a situation, you will neither be able to connect to the database nor recover it during server startup. When SQL database goes into suspect mode, it becomes inaccessible.

#Snap assist windows table mode how to

How to get SQL database out of suspect mode?.When does SQL database goes to suspect mode?.

#Snap assist windows table mode

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gezinus · 8 years ago

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DatabaseRestore: Open Source Database Restore Stored Procedure

Welcome to the DatabaseRestore documentation page.

We were looking for a script that restores a database including the transaction log chain using the backup files in a folder. We also wanted it to be able to continue applying transaction log backups. In other words, we were looking for a custom Log Shipping solution. We could roll our own, but why reinvent the wheel if something already exists? We tried a couple of scripts, but GregWhiteDBA‘s DatabaseRestore stored procedure fit our needs and didn’t need a lot of modifications.

DatabaseRestore is an MIT-licensed open-source stored procedure that restores backups that were created using Ola Hallengren‘s DatabaseBackup solution. Thanks GregWhiteDBA for making it open source! If you aren’t using Ola’s solution for your database backups, you could modify DatabaseRestore to support native backups or another backup solution. That exercise is left to the reader.

The following modifications were made to DatabaseRestore:

Removed code that assumed that the FULL backups are copy-only backups

Removed @BackupPath parameter and added @BackupPathFull and @BackupPathLog in case the files are stored in different base paths

Removed @LogToTable parameter as it wasn’t used in the code

Added @RunRecovery and @ContinueLogs in case the user needed to restore more LOG backups

Changed the data types of the input parameters to match system data types or to use the smallest data type

Added columns to the table variables that store the output of RESTORE FILELISTONLY and RESTORE HEADERONLY since SQL Server 2016 has more columns in the output

Added code to read the LSN information from the LOG backup and compare it to the LSN from the newest FULL backup so that it doesn’t fail when it tries to restore a LOG backup that is too early

Added code to read the LSN information from the restored database and compare it to the LSN from the LOG backups when @ContinueLogs = 1 so that it can figure out which LOG file to restore and not throw an error for the LOG backups that were already restored

Cleaned up the code to have consistency between upper and lower cases of variables

DatabaseRestore may fail if you are not using SQL Server 2016 due to the extra columns that were added to @Headers and @FileListParameters to support the new columns returned by RESTORE HEADERONLY and RESTORE FILELISTONLY commands. It’s a simple enough fix but is not included in our code at this time.

INPUT PARAMETERS

@Database NVARCHAR(128) – name of the source database

@RestoreDatabaseName NVARCHAR(128), default=NULL – name of the restored database, can leave off or set to NULL if the restored name will be the source database’s name

@BackupPathFull NVARCHAR(MAX) – full path with ending backslash where the FULL backups are stored

@BackupPathLog NVARCHAR(MAX) – full path with ending backslash where the LOG backups are stored

@MoveFiles BIT, default=0 – whether or not you want to use a different location for the database files than what was used on the source server, leave off or set to 0 if using the same path as the source

@MoveDataDrive NVARCHAR(260), default=NULL – new location for the data file(s), used when @MoveFiles=1

@MoveLogDrive NVARCHAR(260), default=NULL – new location for the log file, used when @MoveFiles=1

@TestRestore BIT, default=0 – whether or not you are testing restores, if set to 1 then it drops the database at the end

@RunCheckDB BIT, default=0 – whether or not you want it to run DBCC CHECKDB after the restore, it assumes you are using Ola’s DatabaseIntegrityCheck stored procedure

@ContinueLogs, default=0 – whether or not you are continuing to restore logs after the database has already been restored without recovering it

@RunRecovery BIT, default=0 – whether or not to recover the database (RESTORE DATABASE WITH RECOVERY so that it is now usable)

SAMPLE CALLS

Restore the newest FULL backup and all LOG backups and then recover the database so that it can be used:

EXEC dbo.DatabaseRestore @Database = 'LogShipMe', @BackupPathFull = 'D:\Backup\SQL2016PROD1A\LogShipMe\FULL\', @BackupPathLog = 'D:\Backup\SQL2016PROD1A\LogShipMe\LOG\', @ContinueLogs = 0, @RunRecovery = 1;

Restore the newest FULL backup and all LOG backups but keep it in the NORECOVERY state so that more LOG backups can be applied:

Restore more LOG backups but keep it in the NORECOVERY state so that more LOG backups can be applied:

Restore more LOG backups, if any, and then recover the database so that it can be used:

To get your hands on DatabaseRestore, download our free First Responder Kit.

Brent says: and this week during Google Cloud Next, you’ll learn about the Google Compute Engine project where Tara used this script. Stay tuned…

Pick the next GroupBy session lineup: voting is open now.

Bron: Brent Ozar Unlimited® http://ift.tt/2naxkV9

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yourcodesupport-blog · 6 years ago

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SQL- Tips to resolve “Table error: Object O_ID… page P_ID was not encountered.” Error

sql-server-recovery-blog1:

The records in Microsoft SQL Server database can be placed and located in the form of a B-tree. These records are divided into various pages (child pages), each having a unique index page, which is one level up in hierarchy from the child page. Corruption in the hierarchical tree structure (metadata structure corruption) primarily results in loosing the reference of the child page from the Index page. In such situations, the data stored in the database becomes inaccessible. For accessing the data stored in the database, an ideal way is to restore it from an updated database backup. But if in case of absence of an valid database backup, you will need to use advanced MS SQL Database Recovery application to repair your database. Consider a practical scenario, where you receive the below error message when you attempt to access the records stored in table: “Table error: Object ID O_ID, index ID I_ID. Parent node for page P_ID was not encountered.” The above error message makes the data stored in table inaccessible. Moreover, the error message repeatedly repeats every time you attempt to access the records stored in the table. Cause: The root cause for the occurrence of the above error message is SQL database corruption due to metadata structure damage. Note: SQL database can be corrupted either due to logical or physical factors. Resolution: To resolve the above error message and to access the table records, you will need to follow the below measures:

To solve all the corruption issues caused due to physical damage, swap the corrupt system component with a new component.

To solve all the corruption issues caused due to logical damage, run DBCC CHECKDB command with correct repair clause.

The first measure is competent enough to resolve all the physical damage issues. The second measure, however, fails to resolve all logical corruption problems. For such situations, the database table can be repaired by using advanced MS SQL Database Repair software. These SQL Server Recovery utilities employ effective scanning methods to completely repair the corrupt table after all logical database corruption scenarios. Resource: http://ezinearticles.com/?Tips-to-Resolve-table-Error—Object-O_id-Page-P_id-Was-Not-Encountered-Error&id=3451876

Source: sql-server-recovery-blog

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sqlcan · 7 years ago

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Quick Things to Do When DBCC CHECKDB Display Corruption Message

Have you ever wondered that you are working on Microsoft SQL Server and database shows some abnormal file crash or error issue? And, when you execute the DBCC CHECKDB command, it reports corruption in your SQL Server database.

Definitely, this scenario is a nightmare and the saddest part, it is frequently faced by many SQL database administrators.

Now, the biggest question is ‘What to do when…

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prashantjayaram · 7 years ago

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How to fix the database consistency and integrity issues using DBCC CHECKDB and Third Party Tool

Overview The database protection and recovery is a vital role of database administrators. While working on SQL Server, sometimes users get stuck in annoying situations when the database becomes inaccessible. After executing DBCC CHECKDB command to check the problem, the user gets database consistency errors Many companies may have the budget to have a database recovery solutions in place to…

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funnyimagesphotos · 8 years ago

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Fix MS SQL Server Error 9003 Using DBCC CHECKDB Command http://ift.tt/2pRilVG What is SQL Server Model Database Error 9003? Model database error or the Microsoft SQL Server error 9003 is a special type of error message that appears in SQL. These error messages are a result of...

May 19, 2017 at 09:02AM

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marcosplavsczyk · 8 years ago

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Database status overview

Every database in a SQL Server environment has two basic states: full availability (online state) or full unavailability (offline state).

SQL Server incorporates and utilizes seven possible database states, which are present in the grid below, ordered by availability (from fully available to fully unavailable), and with a short explanation for each state:

Database state Description Availability Online Database is functioning normally, and it is available for use. Available Restoring Database is in process of restoration, which means that user initiated the database restoring. Unavailable (without errors, user-induced) Recovering Database is in process of recovering. If succeed, it will change state to online. If process fails, it will change state to suspect. Unavailable (without errors) Recovery pending Recovery process failed in between, but database is not damaged. Further user action is required in order to solve the issue (see in the next paragraph). Unavailable (error occurred) Suspect In this state, there is possibility that database is or was damaged during the recover process. Further user action is required in order to solve the issue. Unavailable (error occurred) Emergency This database state change is user-induced, in order to safely perform maintenance, restore or recovering process on particular database. One note: sysadmin rights are required to manage this database state. Unavailable (without errors, user-induced) Offline Database is not functioning, and is unavailable for use. This state is also user-induced, and it requires further action, in order to change a database state. Unavailable (without errors, user-induced)

Quick reference when transition between database states is interrupted

There are several occasions when a smooth transition between database states could fail. Transitions from restoring, recovering or recovery pending database states to online state can be interrupted by events that stop previously active processes of database back up, restoring or recovery. These events could be disk failures, network connection issues, corrupted database files and other.

In order to solve these database states, perform actions shown below with caution, and with note that causes why interruptions happen can be various (already mentioned issues during the process of database restoration/recover etc.):

If the database is in a permanent restoring state: run this script, to force the recovering process and set database state to online:

RESTORE DATABASE < database_name > WITH RECOVERY

If the database is in a permanent recovering state:

stop SQL Server service;

move the log file for that database (usually in c:\Program Files\Microsoft SQL Server\MSSQL12.MSSQLSERVER\MSSQL\DATA\<database_name>_log.ldf) to another place;

take problematic database offline;

move back the log file to its original folder and take database online.

If the database is in a permanent recovery pending state: take database offline, then online:

ALTER DATABASE < database_name > SET OFFLINE GO ALTER DATABASE < database_name > SET ONLINE GO

If needed, run this script if the database is in a suspect state:

EXEC sp_resetstatus < database_name > GO ALTER DATABASE < database_name > SET EMERGENCY GO DBCC CHECKDB (< database_name >) GO ALTER DATABASE < database_name > SET SINGLE_USER WITH ROLLBACK IMMEDIATE GO DBCC CHECKDB ( < database_name >, REPAIR_ALLOW_DATA_LOSS ) GO ALTER DATABASE < database_name > SET MULTI_USER GO

Determine a database(s) status changes

Database status changes can be determined programmatically with PowerShell, by parsing events related to offline and online database(s) states from Application log within Event Viewer:

#The first part of the script is fetching events related to OFFLINE status; Get-WinEvent -FilterHashtable @{logname=’application’;id=5084;} | ?{$_.message -match "Setting database option OFFLINE"} -ErrorAction SilentlyContinue | Out-File d:\DatabaseStatusChange.txt -Append -Force ## #The second part of the script is fetching events related to ONLINE status; Get-WinEvent -FilterHashtable @{logname=’application’;id=5084;} | ?{$_.message -match "Setting database option ONLINE"} -ErrorAction SilentlyContinue | Out-File d:\DatabaseStatusChange.txt -Append -Force #After data fetching, all events will be parsed into one text file, and every next attempt of executing this script will be appended in the same text file;

The result should appear like this:

Within this filtered log file, moments when particular database went offline or online can be easily compared by timestamp (in TimeCreated column).

To constantly monitor database status change, include the script from above within SQL Server Agent job (refer to this article in order to create mentioned job), if needed.

Monitoring database status change with ApexSQL Monitor

As SQL Server performance monitoring tool, ApexSQL Monitor is continuously auditing status of all databases and their changes present on a monitored SQL server instance, with corresponding metric and alerts.

Information about database status change from Dashboard

On the left pane, when All instances is selected, the information on all databases status will appear in the Dashboard’s grid:

In this case, shown above, all databases are in function.

If some of the databases on the selected instance changed the status in some moment, the Databases counter on the top will show the corresponding number of alert(s), and alert icon will appear in the grid, like shown below:

Select the particular instance in the left pane, scroll down within Overview tab, and check all databases, for their status, database size, log size and related alerts:

In the picture above, there is an alert (or alerts) related to the Test database, which means that Test database’s status has changed.

Also, information about status and related alerts about databases are present in Database performance tab, along with information like recovery model, compatibility level etc.:

Status changed special performance counter

Placed under Database metrics, “Status changed” is the special performance counter, which actually tracks these events:

Status changed counter can be set to particular databases by clicking icon close to the metric name, and Database metric dialog will appear:

Resolving alerts related to Status changed counter

To examine and resolve alerts related to the database status change, go to the Alerts view:

In the General view, present on the picture above, it can be easily seen on which instance particular database (Test) changed its status. Also, the previously mentioned seven database statuses are present on the graph to show the transition between the states.

The selected alert represents the moment when Test database went offline, and the next shows when the same database changed status to online, with exact dates and times.

Automating alerts for database status changes

During monitoring of database status changes, to be effectively notified when a database changes status, set the email profile and/or use the custom command alert action, to make sure that particular database is always functioning.

Change the status of the particular database from offline to online (PowerShell)

In order to set this alert action, download Change_Database_Status.ps1 PowerShell script from this location, and place it on a desired location.

This script collects information on particular database’s status, and if the status is offline, the script will set it online. If it is already online (aka normal), the script will terminate.

[System.Reflection.Assembly]::LoadWithPartialName('Microsoft.SqlServer.SMO') | out-null $s = New-Object ('Microsoft.SqlServer.Management.Smo.Server') <server_name> $db = $s.Databases.item('<database_name>') $db.status if ($db.status -eq 'OFFLINE, AUTOCLOSED'){$db.SetOnline()} else {Break}

Next, customize the downloaded script, particularly <server_name> and <database_name> strings with valid and desired ones, bolded above.

After downloading and customizing the script file, set the custom command alert action within the Status Changed counter, and include this script:

powershell.exe "d:\change_database_status.ps1"

Every time the monitored database status is changed, the alert action will call the Change_Database_Status file and execute the script. Also, within alert action profile, multiple custom command alert actions can be included, just set different servers and databases in mentioned PowerShell script.

Downloads

Please download the script(s) associated with this article on our GitHub repository.

Please contact us for any problems or questions with the scripts.

The post How to monitor database status changes in SQL Server appeared first on Solution center.

#SQL Solution Center

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yourcodesupport-blog · 6 years ago

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SQL - Tips to resolve “Table error: Object O_ID…page P_ID was not encountered.” Error

sql-server-recovery-blog1:

To solve all the corruption issues caused due to physical damage, swap the corrupt system component with a new component.

To solve all the corruption issues caused due to logical damage, run DBCC CHECKDB command with correct repair clause.

Source: sql-server-recovery-blog1

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