SQL Server错误收集#7

错误#1 09:31 2015/1/26上班查看ERRORLOG发现下面错误信息
字面上理解是有内存压力，中午的时候ERRORLOG频繁报下面错误
问题核实，一台服务器上安装两个实例，其中一台设置了最大服务器内存，而另一台没有设置。重新分配最大内存，错误日志不再收到类似信息。
错误#2 09:31 2015/1/27上班查看ERRORLOG发现下面错误信息

2015-01-27 07:10:19.790    spid9s    Recovery is complete. This is an informational message only. No user action is required.
2015-01-27 07:10:19.420    spid9s    Recovery is writing a checkpoint in database ‘DBV2‘ (6). This is an informational message only. No user action is required.
2015-01-27 07:10:19.420    spid9s    0 transactions rolled back in database ‘DBV2‘ (6). This is an informational message only. No user action is required.
2015-01-27 07:10:19.310    spid29s    444 transactions rolled forward in database ‘DBV2‘ (6). This is an informational message only. No user action is required.
2015-01-27 07:10:18.890    spid9s    Recovery completed for database DBV1(database ID 5) in 3 second(s) (analysis 452 ms, redo 2685 ms, undo 134 ms.) This is an informational message only. No user action is required.
2015-01-27 07:10:18.890    spid9s    Recovery is writing a checkpoint in database ‘DBV1‘ (5). This is an informational message only. No user action is required.
2015-01-27 07:10:18.890    spid9s    0 transactions rolled back in database ‘DBV1‘ (5). This is an informational message only. No user action is required.
2015-01-27 07:10:18.410    spid28s    4255 transactions rolled forward in database ‘DBV1‘ (5). This is an informational message only. No user action is required.
2015-01-27 07:10:18.170    登录    Login failed for user ‘Login1‘. 原因: 无法打开明确指定的数据库。 [客户端: xxx.xxx.xxx.xxx]
2015-01-27 07:10:18.170    登录    错误: 18456，严重性: 14，状态: 38。
2015-01-27 07:10:15.260    spid9s    Recovery is writing a checkpoint in database ‘msdb‘ (4). This is an informational message only. No user action is required.
2015-01-27 07:10:15.260    spid9s    0 transactions rolled back in database ‘msdb‘ (4). This is an informational message only. No user action is required.
2015-01-27 07:10:15.170    spid12s    114 transactions rolled forward in database ‘msdb‘ (4). This is an informational message only. No user action is required.
2015-01-27 07:10:14.560    spid29s    Starting up database ‘DBV2‘.
2015-01-27 07:10:14.560    spid28s    Starting up database ‘DBV1‘.
2015-01-27 07:10:14.560    spid12s    Starting up database ‘msdb‘.
2015-01-27 07:10:14.460    spid12s    A new instance of the full-text filter daemon host process has been successfully started.
2015-01-27 07:10:13.520    登录    Login failed for user ‘Login2‘. 原因: 无法打开明确指定的数据库。 [客户端: xxx.xxx.xxx.xxx]
2015-01-27 07:10:13.520    登录    错误: 18456，严重性: 14，状态: 38。
2015-01-27 07:10:13.110    登录    Login failed for user ‘Login1‘. 原因: 无法打开明确指定的数据库。 [客户端: xxx.xxx.xxx.xxx]
2015-01-27 07:10:13.110    登录    错误: 18456，严重性: 14，状态: 38。
2015-01-27 07:10:13.010    登录    SQL Server is not ready to accept new client connections. Wait a few minutes before trying again. If you have access to the error log, look for the informational message that indicates that SQL Server is ready before trying to connect again.  [客户端: xxx.xxx.xxx.xxx]
2015-01-27 07:10:13.010    登录    错误: 17187，严重性: 16，状态: 1。
2015-01-27 07:10:12.910    服务器    SQL Server is now ready for client connections. This is an informational message; no user action is required.
2015-01-27 07:10:12.910    服务器    The SQL Server Network Interface library could not register the Service Principal Name (SPN) for the SQL Server service. Error: 0x54b, state: 3. Failure to register an SPN may cause integrated authentication to fall back to NTLM instead of Kerberos. This is an informational message. Further action is only required if Kerberos authentication is required by authentication policies.
2015-01-27 07:10:12.900    服务器    Dedicated admin connection support was established for listening locally on port 12345.
2015-01-27 07:10:12.900    服务器    Server is listening on [ 127.0.0.1 <ipv4> 12345].
2015-01-27 07:10:12.900    服务器    Server is listening on [ ::1 <ipv6> 12345].
2015-01-27 07:10:12.900    服务器    Server local connection provider is ready to accept connection on [ \\.\pipe\MSSQL$INSTANCE\sql\query ].
2015-01-27 07:10:12.900    服务器    Server local connection provider is ready to accept connection on [ \\.\pipe\SQLLocal\INSTANCE ].
2015-01-27 07:10:12.900    服务器    Server is listening on [ ‘any‘ <ipv4> 1234].
2015-01-27 07:10:12.900    服务器    Server is listening on [ ‘any‘ <ipv6> 1234].

服务器是27号早上重启的，刚好是重启后，数据库还没完全恢复时新的连接进来。正常重启一般按照，先禁用数据库端口->备份还原验证->停数据库服务->重启开端口。从信息看来，应该是没有禁用数据库端口，直接重启服务器了。