那些遇到过的问题

恢复期间的事务死锁

bon*_*ade 2 sql-server deadlock restore sql-server-2014

我正在使用 PS 脚本来恢复数据库备份，并且我有以下从 PS Invoke-SQLcmd 命令运行的 SQL 脚本：

USE master
GO
ALTER DATABASE mydatabase SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO
ALTER DATABASE mydatabase SET OFFLINE WITH ROLLBACK IMMEDIATE
GO
RESTORE DATABASE mydatabase
FROM DISK = 'Z:\bak\mydatabase.bak'
WITH REPLACE
GO

ALTER DATABASE mydatabase SET RECOVERY SIMPLE
GO
ALTER DATABASE mydatabase SET ONLINE
GO
ALTER DATABASE mydatabase SET MULTI_USER WITH ROLLBACK IMMEDIATE
GO
Run Code Online (Sandbox Code Playgroud)

如您所见，我将数据库切换到单模式，甚至在还原操作之前将其设为离线。但是，我不时收到如下错误：

Transaction (Process ID 61) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.

我不是数据库死锁方面的专家，我不知道如何保护我的脚本以防止此类错误。您知道当 db 处于单模式和脱机状态时会发生什么阻止恢复操作的情况吗？

更新更改脚本，如：

USE master
GO
ALTER DATABASE mydatabase SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO

RESTORE DATABASE mydatabase
FROM DISK = 'Z:\bak\mydatabase.bak'
WITH REPLACE, RECOVERY
GO

ALTER DATABASE mydatabase SET RECOVERY SIMPLE
GO
ALTER DATABASE mydatabase SET MULTI_USER WITH ROLLBACK IMMEDIATE
GO
Run Code Online (Sandbox Code Playgroud)

我打开dbcc trace并得到以下日志：

Date,Source,Severity,Message
02/05/2019 07:34:06,spid37s,Unknown,inputbuf
02/05/2019 07:34:06,spid37s,Unknown,executionStack
02/05/2019 07:34:06,spid37s,Unknown,process id=process2bdbf8ca8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=1317 schedulerid=3 kpid=10904 status=suspended spid=53 sbid=0 ecid=0 priority=0 trancount=0 lastbatchstarted=1900-01-01T00:00:00 lastbatchcompleted=1900-01-01T00:00:00 lastattention=1900-01-01T00:00:00 clientapp=Microsoft JDBC Driver for SQL Server hostname=APPSERVER hostpid=0 loginname=testuser isolationlevel=read committed (2) xactid=0 currentdb=6 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
02/05/2019 07:34:06,spid37s,Unknown,process-list
02/05/2019 07:34:06,spid37s,Unknown,deadlock victim=process2bdbf8ca8
02/05/2019 07:34:06,spid37s,Unknown,deadlock-list
02/05/2019 07:34:06,spid7s,Unknown,waiter id=process2bdef24e8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,waiter-list
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=S
02/05/2019 07:34:06,spid7s,Unknown,owner-list
02/05/2019 07:34:06,spid7s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=S
02/05/2019 07:34:06,spid7s,Unknown,waiter id=process2ff031848 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,waiter-list
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=S
02/05/2019 07:34:06,spid7s,Unknown,owner-list
02/05/2019 07:34:06,spid7s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=S
02/05/2019 07:34:06,spid7s,Unknown,waiter id=process2f4f5eca8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,waiter-list
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=S
02/05/2019 07:34:06,spid7s,Unknown,owner-list
02/05/2019 07:34:06,spid7s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=S
02/05/2019 07:34:06,spid7s,Unknown,waiter id=process2bdbf8ca8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,waiter-list
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=S
02/05/2019 07:34:06,spid7s,Unknown,owner-list
02/05/2019 07:34:06,spid7s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=S
02/05/2019 07:34:06,spid7s,Unknown,waiter id=process2bb01a8c8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,waiter-list
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=S
02/05/2019 07:34:06,spid7s,Unknown,owner-list
02/05/2019 07:34:06,spid7s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=S
02/05/2019 07:34:06,spid7s,Unknown,waiter id=process2f4f0c8c8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,waiter-list
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f64604e8 mode=S
02/05/2019 07:34:06,spid7s,Unknown,owner-list
02/05/2019 07:34:06,spid7s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=S
02/05/2019 07:34:06,spid7s,Unknown,waiter id=process2f64604e8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,waiter-list
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f4f0c8c8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2bdbf8ca8 mode=X requestType=wait
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2bdbf8ca8 mode=S
02/05/2019 07:34:06,spid7s,Unknown,owner id=process2f4f0c8c8 mode=S
02/05/2019 07:34:06,spid7s,Unknown,owner-list
02/05/2019 07:34:06,spid7s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=S
02/05/2019 07:34:06,spid7s,Unknown,resource-list
02/05/2019 07:34:06,spid7s,Unknown,WITH REPLACE
02/05/2019 07:34:06,spid7s,Unknown,FROM DISK = 'Z:\bak\mydatabase.bak'
02/05/2019 07:34:06,spid7s,Unknown,RESTORE DATABASE mydatabase
02/05/2019 07:34:06,spid7s,Unknown,inputbuf
02/05/2019 07:34:06,spid7s,Unknown,unknown
02/05/2019 07:34:06,spid7s,Unknown,frame procname=unknown line=2 stmtstart=4 stmtend=326 sqlhandle=0x010001006bf7d11c709f1b7f0200000000000000000000000000000000000000000000000000000000000000
02/05/2019 07:34:06,spid7s,Unknown,executionStack
02/05/2019 07:34:06,spid7s,Unknown,process id=process2bdef24e8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=128 schedulerid=1 kpid=10208 status=suspended spid=58 sbid=0 ecid=0 priority=0 trancount=0 lastbatchstarted=2019-02-05T07:34:06.133 lastbatchcompleted=2019-02-05T07:34:06.107 lastattention=1900-01-01T00:00:00.107 clientapp=.Net SqlClient Data Provider hostname=BUILD_SERVER hostpid=3268 loginname=mydomain\admin isolationlevel=read committed (2) xactid=0 currentdb=6 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
02/05/2019 07:34:06,spid7s,Unknown,inputbuf
02/05/2019 07:34:06,spid7s,Unknown,executionStack
02/05/2019 07:34:06,spid7s,Unknown,process id=process2ff031848 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=1875 schedulerid=4 kpid=7928 status=background spid=37 sbid=0 ecid=0 priority=0 trancount=0
02/05/2019 07:34:06,spid7s,Unknown,inputbuf
02/05/2019 07:34:06,spid7s,Unknown,executionStack
02/05/2019 07:34:06,spid7s,Unknown,process id=process2f4f5eca8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=625 schedulerid=4 kpid=14180 status=background spid=39 sbid=0 ecid=0 priority=0 trancount=0
02/05/2019 07:34:06,spid7s,Unknown,inputbuf
02/05/2019 07:34:06,spid7s,Unknown,executionStack
02/05/2019 07:34:06,spid7s,Unknown,process id=process2bdbf8ca8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=1809 schedulerid=3 kpid=10904 status=suspended spid=53 sbid=0 ecid=0 priority=0 trancount=0 lastbatchstarted=1900-01-01T00:00:00 lastbatchcompleted=1900-01-01T00:00:00 lastattention=1900-01-01T00:00:00 clientapp=Microsoft JDBC Driver for SQL Server hostname=APPSERVER hostpid=0 loginname=testuser isolationlevel=read committed (2) xactid=0 currentdb=6 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
02/05/2019 07:34:06,spid7s,Unknown,inputbuf
02/05/2019 07:34:06,spid7s,Unknown,executionStack
02/05/2019 07:34:06,spid7s,Unknown,process id=process2bb01a8c8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=625 schedulerid=3 kpid=6816 status=background spid=31 sbid=0 ecid=0 priority=0 trancount=0
02/05/2019 07:34:06,spid7s,Unknown,inputbuf
02/05/2019 07:34:06,spid7s,Unknown,executionStack
02/05/2019 07:34:06,spid7s,Unknown,process id=process2f4f0c8c8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=273 schedulerid=2 kpid=9004 status=suspended spid=57 sbid=0 ecid=0 priority=0 trancount=0 lastbatchstarted=1900-01-01T00:00:00 lastbatchcompleted=1900-01-01T00:00:00 lastattention=1900-01-01T00:00:00 clientapp=Microsoft JDBC Driver for SQL Server hostname=APPSERVER hostpid=0 loginname=testuser isolationlevel=read committed (2) xactid=0 currentdb=6 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
02/05/2019 07:34:06,spid7s,Unknown,inputbuf
02/05/2019 07:34:06,spid7s,Unknown,executionStack
02/05/2019 07:34:06,spid7s,Unknown,process id=process2f64604e8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=1875 schedulerid=2 kpid=11588 status=background spid=36 sbid=0 ecid=0 priority=0 trancount=0
02/05/2019 07:34:06,spid7s,Unknown,process-list
02/05/2019 07:34:06,spid7s,Unknown,deadlock victim=process2f64604e8
02/05/2019 07:34:06,spid7s,Unknown,deadlock-list
02/05/2019 07:34:06,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:34:06,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:34:04,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:34:04,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:34:04,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:34:04,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:34:04,spid22s,Unknown,waiter id=process2f64604e8 mode=X requestType=wait
02/05/2019 07:34:04,spid22s,Unknown,waiter-list
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2bb01a8c8 mode=X requestType=wait
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2bb01a8c8 mode=S
02/05/2019 07:34:04,spid22s,Unknown,owner-list
02/05/2019 07:34:04,spid22s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=U
02/05/2019 07:34:04,spid22s,Unknown,waiter id=process2ff031c28 mode=X requestType=convert
02/05/2019 07:34:04,spid22s,Unknown,waiter-list
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2f64604e8 mode=X requestType=wait
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2bb01a8c8 mode=X requestType=wait
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2bb01a8c8 mode=S
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2f64604e8 mode=S
02/05/2019 07:34:04,spid22s,Unknown,owner-list
02/05/2019 07:34:04,spid22s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=U
02/05/2019 07:34:04,spid22s,Unknown,waiter id=process2bb01a8c8 mode=X requestType=wait
02/05/2019 07:34:04,spid22s,Unknown,waiter-list
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2ff031c28 mode=X requestType=convert
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2ff031c28 mode=S
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2ff031c28 mode=U
02/05/2019 07:34:04,spid22s,Unknown,owner id=process2ff031c28 mode=S
02/05/2019 07:34:04,spid22s,Unknown,owner-list
02/05/2019 07:34:04,spid22s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=U
02/05/2019 07:34:04,spid22s,Unknown,resource-list
02/05/2019 07:34:04,spid22s,Unknown,inputbuf
02/05/2019 07:34:04,spid22s,Unknown,executionStack
02/05/2019 07:34:04,spid22s,Unknown,process id=process2f64604e8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=840 schedulerid=2 kpid=11588 status=suspended spid=53 sbid=0 ecid=0 priority=0 trancount=0 lastbatchstarted=1900-01-01T00:00:00 lastbatchcompleted=1900-01-01T00:00:00 lastattention=1900-01-01T00:00:00 clientapp=Microsoft JDBC Driver for SQL Server hostname=APPSERVER hostpid=0 loginname=testuser isolationlevel=read committed (2) xactid=0 currentdb=6 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
02/05/2019 07:34:04,spid22s,Unknown,WITH REPLACE
02/05/2019 07:34:04,spid22s,Unknown,FROM DISK = 'Z:\bak\mydatabase.bak'
02/05/2019 07:34:04,spid22s,Unknown,RESTORE DATABASE mydatabase
02/05/2019 07:34:04,spid22s,Unknown,inputbuf
02/05/2019 07:34:04,spid22s,Unknown,unknown
02/05/2019 07:34:04,spid22s,Unknown,frame procname=unknown line=2 stmtstart=4 stmtend=326 sqlhandle=0x010001006bf7d11c709f1b7f0200000000000000000000000000000000000000000000000000000000000000
02/05/2019 07:34:04,spid22s,Unknown,executionStack
02/05/2019 07:34:04,spid22s,Unknown,process id=process2ff031c28 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=2222 schedulerid=4 kpid=9444 status=suspended spid=76 sbid=0 ecid=0 priority=0 trancount=0 lastbatchstarted=2019-02-05T07:33:56.687 lastbatchcompleted=2019-02-05T07:33:56.657 lastattention=1900-01-01T00:00:00.657 clientapp=.Net SqlClient Data Provider hostname=BUILD_SERVER hostpid=3268 loginname=mydomain\admin isolationlevel=read committed (2) xactid=0 currentdb=6 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
02/05/2019 07:34:04,spid22s,Unknown,inputbuf
02/05/2019 07:34:04,spid22s,Unknown,executionStack
02/05/2019 07:34:04,spid22s,Unknown,process id=process2bb01a8c8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=1364 schedulerid=3 kpid=6816 status=suspended spid=57 sbid=0 ecid=0 priority=0 trancount=0 lastbatchstarted=1900-01-01T00:00:00 lastbatchcompleted=1900-01-01T00:00:00 lastattention=1900-01-01T00:00:00 clientapp=Microsoft JDBC Driver for SQL Server hostname=APPSERVER hostpid=0 loginname=testuser isolationlevel=read committed (2) xactid=0 currentdb=6 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
02/05/2019 07:34:04,spid22s,Unknown,process-list
02/05/2019 07:34:04,spid22s,Unknown,deadlock victim=process2bb01a8c8
02/05/2019 07:34:04,spid22s,Unknown,deadlock-list
02/05/2019 07:34:03,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:34:03,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:34:02,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:34:02,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:34:01,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:34:01,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:34:01,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:34:01,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:34:00,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:34:00,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:33:59,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:33:59,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:33:59,spid35s,Unknown,waiter id=process2f4f0c8c8 mode=X requestType=wait
02/05/2019 07:33:59,spid35s,Unknown,waiter-list
02/05/2019 07:33:59,spid35s,Unknown,owner id=process2bdbf8ca8 mode=X requestType=wait
02/05/2019 07:33:59,spid35s,Unknown,owner id=process2bdbf8ca8 mode=S
02/05/2019 07:33:59,spid35s,Unknown,owner-list
02/05/2019 07:33:59,spid35s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=S
02/05/2019 07:33:59,spid35s,Unknown,waiter id=process2bdbf8ca8 mode=X requestType=wait
02/05/2019 07:33:59,spid35s,Unknown,waiter-list
02/05/2019 07:33:59,spid35s,Unknown,owner id=process2f4f0c8c8 mode=X requestType=wait
02/05/2019 07:33:59,spid35s,Unknown,owner id=process2f4f0c8c8 mode=S
02/05/2019 07:33:59,spid35s,Unknown,owner-list
02/05/2019 07:33:59,spid35s,Unknown,databaselock subresource=FULL dbid=6 dbname=unknown lockPartition=0 id=lock2bcae4680 mode=S
02/05/2019 07:33:59,spid35s,Unknown,resource-list
02/05/2019 07:33:59,spid35s,Unknown,inputbuf
02/05/2019 07:33:59,spid35s,Unknown,executionStack
02/05/2019 07:33:59,spid35s,Unknown,process id=process2f4f0c8c8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=461 schedulerid=2 kpid=9004 status=suspended spid=57 sbid=0 ecid=0 priority=0 trancount=0 lastbatchstarted=1900-01-01T00:00:00 lastbatchcompleted=1900-01-01T00:00:00 lastattention=1900-01-01T00:00:00 clientapp=Microsoft JDBC Driver for SQL Server hostname=APPSERVER hostpid=0 loginname=testuser isolationlevel=read committed (2) xactid=0 currentdb=6 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
02/05/2019 07:33:59,spid35s,Unknown,inputbuf
02/05/2019 07:33:59,spid35s,Unknown,executionStack
02/05/2019 07:33:59,spid35s,Unknown,process id=process2bdbf8ca8 taskpriority=0 logused=10000 waitresource=DATABASE: 6:0  waittime=461 schedulerid=3 kpid=10904 status=suspended spid=53 sbid=0 ecid=0 priority=0 trancount=0 lastbatchstarted=1900-01-01T00:00:00 lastbatchcompleted=1900-01-01T00:00:00 lastattention=1900-01-01T00:00:00 clientapp=Microsoft JDBC Driver for SQL Server hostname=APPSERVER hostpid=0 loginname=testuser isolationlevel=read committed (2) xactid=0 currentdb=6 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
02/05/2019 07:33:59,spid35s,Unknown,process-list
02/05/2019 07:33:59,spid35s,Unknown,deadlock victim=process2bdbf8ca8
02/05/2019 07:33:59,spid35s,Unknown,deadlock-list
02/05/2019 07:33:58,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:33:58,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:33:57,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:33:57,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:33:56,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:33:56,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:33:56,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:33:56,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:33:56,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:33:56,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:33:56,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:33:56,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:33:56,Logon,Unknown,Login failed for user 'testuser'. Reason: Failed to open the explicitly specified database 'mydatabase'. [CLIENT: 11.11.11.11]
02/05/2019 07:33:56,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.
02/05/2019 07:33:56,Logon,Unk

Kin*_*hah 5

将 db 置于单用户模式然后使其脱机是没有意义的。像 sql 代理这样的后台服务可能会尝试连接到数据库。

如果您想获得有关哪个进程陷入死锁的更多详细信息，那么您可以启用TF 1222( dbcc traceon (1222, -1)) 然后禁用它 ( dbcc traceoff (1222, -1)) 或使用事件通知（链接到我的脚本）

只是ALTER DATABASE mydatabase SET OFFLINE WITH ROLLBACK IMMEDIATE，通过恢复恢复数据库。

编辑：

我正在使用 PS 脚本来恢复数据库备份

看看dbatools（用于自动化数据库开发和管理的社区驱动的 PowerShell 模块）。你可以在github上查看代码。通过这种方式，您可以学习并做出贡献。

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