LSN mismatch error in Log Shipping

LSN mismatch is a common issue which happens in Log Shipping and because of which the Log Shipping goes out of sync.
When you check the history, you will find messages like below

Msg 4305, Level 16, State 1, Line 1 The log in this backup set begins at LSN 36000000048400001, which is too recent to apply to the database. An earlier log backup that includes LSN 20000000022100001 can be restored. Msg 3013, Level 16, State 1, Line 1 RESTORE LOG is terminating abnormally.

According to this error message, I am trying to restore a log backup before which I need to restore another backup which is taken earlier than this.

View SQL Server log files offline in SQL Server 2012

Viewing the SQL server log files when the SQL server instance is offline or not accessible is something that every DBA would always wish to have as this helps in better troubleshooting.
This feature is now made available in SQL server 2012 and we can view SQL Server log files from a local or remote instance of SQL Server when the target instance is offline or cannot start.
We can also use this to connect to an instance that is online, but for some reason, you cannot connect through a SQL Server connection.

T-SQL query to find members of a Database Role

Here is a T-SQL query to find members of a Database Role

USE SansSQL --Change the Database Name
GO
SELECT USER_NAME(memberuid) AS Member ,USER_NAME(groupuid) GroupName FROM sysmembers
ORDER BY member 

Database Refresh and User Permissions

How often do you refresh the databases from production to development?
How often do you miss to capture the users and their permission on the existing database before you restore?

Restoring or refreshing databases from one environment to another is a regular activity that a DBA would perform as part of their job. And as part of the refresh activity it is very important to make note of the users and their permissions before proceeding with the restoration of database. Also it is equally important to apply the correct permission after the restore.

Get SQL Server Database details using T-SQL

Here is a T-SQL script which gives you the details of all the databases in an SQL Server Instance.
This will be very useful when you are gathering SQL Server information from multiple servers

SET NOCOUNT ON
IF OBJECT_ID('tempdb..#DatabaseDetails') IS NOT NULL DROP TABLE #DatabaseDetails
CREATE TABLE #DatabaseDetails (
  DatabaseID int
, DatabaseName varchar(256)
, CreateDate datetime
, Collation varchar(256)
, ComparisonStyle int
, IsAnsiNullDefault bit
, IsAnsiNullsEnabled bit
, IsAnsiPaddingEnabled bit
, IsAnsiWarningsEnabled bit
, IsArithmeticAbortEnabled bit
, IsAutoClose bit
, IsAutoCreateStatistics bit
, IsAutoShrink bit
, IsAutoUpdateStatistics bit
, IsCloseCursorsOnCommitEnabled bit
, IsFulltextEnabled bit
, [IsInStandBy] bit
, IsLocalCursorsDefault bit
, IsMergePublished bit
, IsMergeSubscribed bit
, IsNullConcat bit
, IsNumericRoundAbortEnabled bit
, IsParameterizationForced bit
, [IsQuotedIdentifiersEnabled] bit
, IsPublished bit
, IsRecursiveTriggersEnabled bit
, IsSubscribed bit
, IsSyncWithBackup bit
, IsTornPageDetectionEnabled bit
, LCID int
, [Recovery] varchar(256)
, [SQLSortOrder] tinyint
, [Status] varchar(256)
, Updateability varchar(256)
, UserAccess varchar(256)
, [Version] int
, LastDatabaseBackup datetime
, LastIncremetalBackup datetime
, LastLogBackup datetime
, TotalLogSize bigint
, LogPercentUsed int
, [TotalDBSize_MB] bigint
, [cmptlevel] int
)

INSERT INTO #DatabaseDetails(
  DatabaseID
, [DatabaseName]
, [CreateDate]
, [Collation]
, [ComparisonStyle]
, [IsAnsiNullDefault]
, [IsAnsiNullsEnabled]
, [IsAnsiPaddingEnabled]
, [IsAnsiWarningsEnabled]
, [IsArithmeticAbortEnabled]
, [IsAutoClose]
, [IsAutoCreateStatistics]
, [IsAutoShrink]
, [IsAutoUpdateStatistics]
, [IsCloseCursorsOnCommitEnabled]
, [IsFulltextEnabled]
, [IsInStandBy]
, [IsLocalCursorsDefault]
, [IsMergePublished]
, [IsMergeSubscribed]
, [IsNullConcat]
, [IsNumericRoundAbortEnabled]
, [IsParameterizationForced]
, [IsQuotedIdentifiersEnabled]
, [IsPublished]
, [IsRecursiveTriggersEnabled]
, [IsSubscribed]
, [IsSyncWithBackup]
, [IsTornPageDetectionEnabled]
, [LCID]
, [Recovery]
, [SQLSortOrder]
, [Status]
, [Updateability]
, [UserAccess]
, [Version]
, [cmptlevel])
SELECT sd.dbid as 'DatabaseID'
 , sd.[name] as 'DatabaseName'
 , sd.crdate as 'CreateDate'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'Collation') as varchar(256)) as 'Collation'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'ComparisonStyle') as varchar(256)) as 'ComparisonStyle'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsAnsiNullDefault') as bit) as 'IsAnsiNullDefault'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsAnsiNullsEnabled') as bit) as 'IsAnsiNullsEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsAnsiPaddingEnabled') as bit) as 'IsAnsiPaddingEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsAnsiWarningsEnabled') as bit) as 'IsAnsiWarningsEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsArithmeticAbortEnabled') as bit) as 'IsArithmeticAbortEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsAutoClose') as bit) as 'IsAutoClose'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsAutoCreateStatistics') as bit) as 'IsAutoCreateStatistics'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsAutoShrink') as bit) as 'IsAutoShrink'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsAutoUpdateStatistics') as bit) as 'IsAutoUpdateStatistics'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsCloseCursorsOnCommitEnabled') as bit) as 'IsCloseCursorsOnCommitEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsFulltextEnabled') as bit) as 'IsFulltextEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsInStandBy') as bit) as 'IsInStandBy'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsLocalCursorsDefault') as bit) as 'IsLocalCursorsDefault'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsMergePublished') as bit) as 'IsMergePublished'
 , CASE WHEN sd.category & 8 = 8 THEN 1 ELSE 0 end as 'IsMergeSubscribed'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsNullConcat') as bit) as 'IsNullConcat'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsNumericRoundAbortEnabled') as bit) as 'IsNumericRoundAbortEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsParameterizationForced') as bit) as 'IsParameterizationForced'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsQuotedIdentifiersEnabled') as bit) as 'IsQuotedIdentifiersEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsPublished') as bit) as 'IsPublished'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsRecursiveTriggersEnabled') as bit) as 'IsRecursiveTriggersEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsSubscribed') as bit) as 'IsSubscribed'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsSyncWithBackup') as bit) as 'IsSyncWithBackup'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'IsTornPageDetectionEnabled') as bit) as 'IsTornPageDetectionEnabled'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'LCID') as int) as 'LCID'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'Recovery') as varchar(256)) as 'Recovery'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'SQLSortOrder') as tinyint) as 'SQLSortOrder'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'Status') as varchar(256)) as 'Status'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'Updateability') as varchar(256)) as 'Updateability'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'UserAccess') as varchar(256)) as 'UserAccess'
 , CAST(DATABASEPROPERTYEX(sd.[name], 'Version') as int) as 'Version'
 , cmptlevel
FROM master.dbo.sysdatabases sd 
ORDER BY sd.dbid



UPDATE dbd
SET   LastDatabaseBackup = fullbak.LastDatabaseBackup
 , LastIncremetalBackup = incbak.LastIncremetalBackup
 , LastLogBackup = logbak.LastLogBackup
FROM #DatabaseDetails dbd
left join (
 SELECT sd.dbid
   , sd.[name] as 'DatabaseName'
   , max(t1.backup_finish_date) as 'LastDatabaseBackup'
 FROM master.dbo.sysdatabases sd 
 join msdb.dbo.backupset t1  on t1.type = 'D' and t1.database_name = sd.[name]
 GROUP BY sd.dbid, sd.[name]
) fullbak ON fullbak.dbid = dbd.DatabaseID
left join (
 SELECT sd.dbid
   , sd.[name] as 'DatabaseName'
   , max(t2.backup_finish_date) as 'LastIncremetalBackup'
 FROM master.dbo.sysdatabases sd 
 join msdb.dbo.backupset t2  on t2.type = 'I' and t2.database_name = sd.[name]
 GROUP BY sd.dbid, sd.[name]
) incbak on incbak.dbid = dbd.DatabaseID
left join (
 SELECT sd.dbid
   , sd.[name] as 'DatabaseName'
   , max(t3.backup_finish_date) as 'LastLogBackup'
 FROM master.dbo.sysdatabases sd 
 join msdb.dbo.backupset t3  on t3.type = 'L' and t3.database_name = sd.[name]
 GROUP BY sd.dbid, sd.[name]
) logbak on logbak.dbid = dbd.DatabaseID


IF OBJECT_ID('tempdb..#logspace') IS NOT NULL DROP TABLE #logspace
CREATE TABLE #logspace(
   DatabaseName varchar(256)
 , TotalLogSize decimal(20,4)
 , PercentUsed decimal(20,4)
 , [Status] varchar(50)
)
INSERT INTO #logspace
EXEC('DBCC sqlperf(logspace)')

UPDATE dbd
SET   TotalLogSize = ls.TotalLogSize
 , LogPercentUsed = Convert(int, ls.PercentUsed)
FROM #DatabaseDetails dbd
join #logspace ls ON dbd.DatabaseID = db_id(ls.DatabaseName)

EXEC master.dbo.sp_MSForEachDB 'update #DatabaseDetails
set TotalDBSize_MB = (select (sum([size]) * 8.0) / 1024.0 
FROM [?].[dbo].[sysfiles] )
where DatabaseID = db_id(''?'')'

SELECT DatabaseID
, DatabaseName
, [TotalDBSize_MB]
, TotalLogSize
, LogPercentUsed
, CreateDate
, [Status]
, LastDatabaseBackup
, LastIncremetalBackup
, LastLogBackup
, [Recovery]
, [Updateability]
, [UserAccess]
, [Collation]
, [ComparisonStyle]
, [LCID]
, [SQLSortOrder]
, [Version]
, [cmptlevel]
, [IsAutoUpdateStatistics]
, [IsAutoCreateStatistics]
, [IsInStandBy]
, [IsAutoShrink]
, [IsNullConcat]
, [IsFulltextEnabled]
, [IsPublished]
, [IsSubscribed]
, [IsMergePublished]
, [IsMergeSubscribed]
, [IsAnsiNullDefault]
, [IsAnsiNullsEnabled]
, [IsAnsiPaddingEnabled]
, [IsAnsiWarningsEnabled]
, [IsArithmeticAbortEnabled]
, [IsAutoClose]
, [IsCloseCursorsOnCommitEnabled]
, [IsLocalCursorsDefault]
, [IsNumericRoundAbortEnabled]
, [IsParameterizationForced]
, [IsQuotedIdentifiersEnabled]
, [IsRecursiveTriggersEnabled]
, [IsSyncWithBackup]
, [IsTornPageDetectionEnabled]
FROM #DatabaseDetails
ORDER BY DatabaseName
SET NOCOUNT OFF