SQL Server常见问题及解决方法分享

 WITH sess AS ( SELECT es.session_id, database_name = DB_NAME(er.database_id), er.cpu_time, er.reads, er.writes, er.logical_reads, login_name, er.status, blocking_session_id, wait_type, wait_resource, wait_time, individual_query = SUBSTRING (qt.text, (er.statement_start_offset/2)+1, ((CASE WHEN er.statement_end_offset = -1 THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2 ELSE er.statement_end_offset END - er.statement_start_offset)/2)+1), parent_query = qt.text, program_name, host_name, nt_domain, start_time, DATEDIFF(MS,er.start_time,GETDATE()) as duration, (SELECT query_plan FROM sys.dm_exec_query_plan(er.plan_handle)) AS query_plan FROM sys.dm_exec_requests er INNER JOIN sys.dm_exec_sessions es ON er.session_id = es.session_id CROSS APPLY sys.dm_exec_sql_text(er.sql_handle)as qt WHERE es.session_id > 50 AND es.session_Id NOT IN (@@SPID) ) SELECT * FROM sess UNION ALL SELECT es.session_id, database_name = '', 0, 0, 0, 0, login_name, es.status, 0, '', '', '', qt.text, parent_query = qt.text, program_name, host_name, nt_domain, es.last_request_start_time, DATEDIFF(MS,es.last_request_start_time,GETDATE()) as duration, NULL AS query_plan FROM sys.dm_exec_sessions es INNER JOIN sys.dm_exec_connections ec ON es.session_id = ec.session_id CROSS APPLY sys.dm_exec_sql_text(ec.most_recent_sql_handle)as qt WHERE ec.most_recent_session_id IN ( SELECT blocking_session_id FROM sess WHERE blocking_session_id NOT IN(SELECT DISTINCT session_id FROM sess) ) ORDER BY 1, 2

 CREATE PROCEDURE #sp_hexadecimal @binvalue varbinary(256), @hexvalue varchar (514) OUTPUT AS DECLARE @charvalue varchar (514) DECLARE @i int DECLARE @length int DECLARE @hexstring char(16) SELECT @charvalue = '0x' SELECT @i = 1 SELECT @length = DATALENGTH (@binvalue) SELECT @hexstring = '0123456789ABCDEF' WHILE (@i <= @length) BEGIN DECLARE @tempint int DECLARE @firstint int DECLARE @secondint int SELECT @tempint = CONVERT(int, SUBSTRING(@binvalue,@i,1)) SELECT @firstint = FLOOR(@tempint/16) SELECT @secondint = @tempint - (@firstint*16) SELECT @charvalue = @charvalue + SUBSTRING(@hexstring, @firstint+1, 1) + SUBSTRING(@hexstring, @secondint+1, 1) SELECT @i = @i + 1 END SELECT @hexvalue = @charvalue GO DECLARE @name sysname DECLARE @type varchar (1) DECLARE @hasaccess int DECLARE @denylogin int DECLARE @is_disabled int DECLARE @PWD_varbinary varbinary (256) DECLARE @PWD_string varchar (514) DECLARE @Principal_id int DECLARE @SID_varbinary varbinary (85) DECLARE @SID_string varchar (514) DECLARE @tmpstr varchar (1024) DECLARE @is_policy_checked varchar (3) DECLARE @is_expiration_checked varchar (3) DECLARE @defaultdb sysname DECLARE @language sysname DECLARE @rolename sysname DECLARE login_curs CURSOR FOR SELECT p.principal_id, p.sid, p.name, p.type, p.is_disabled, p.default_database_name, p.default_language_name, l.hasaccess, l.denylogin FROM sys.server_principals p LEFT JOIN sys.syslogins l ON ( l.name = p.name ) WHERE p.type IN ( 'S', 'G', 'U' ) AND p.name <> 'sa' OPEN login_curs FETCH NEXT FROM login_curs INTO @Principal_id, @SID_varbinary, @name, @type, @is_disabled, @defaultdb, @language, @hasaccess, @denylogin IF (@@fetch_status = -1) BEGIN PRINT 'No login(s) found.' CLOSE login_curs DEALLOCATE login_curs RETURN END SET @tmpstr = '** Generated ' + CONVERT (varchar, GETDATE()) + ' on ' + @@SERVERNAME + ' */' PRINT @tmpstr PRINT '' WHILE (@@fetch_status <> -1) BEGIN IF (@@fetch_status <> -2) BEGIN PRINT '' SET @tmpstr = '-- Login: ' + @name PRINT @tmpstr IF (@type IN ( 'G', 'U')) BEGIN -- NT authenticated account/group SET @tmpstr = 'CREATE LOGIN ' + QUOTENAME( @name ) + ' FROM WINDOWS WITH DEFAULT_DATABASE = [' + @defaultdb + '], DEFAULT_LANGUAGE = [' + @language + ']' END ELSE BEGIN -- SQL Server authentication -- obtain password and sid SET @PWD_varbinary = CAST( LOGINPROPERTY( @name, 'PasswordHash' ) AS varbinary (256) ) EXEC #sp_hexadecimal @PWD_varbinary, @PWD_string OUT EXEC #sp_hexadecimal @SID_varbinary,@SID_string OUT -- obtain password policy state SELECT @is_policy_checked = CASE is_policy_checked WHEN 1 THEN 'ON' WHEN 0 THEN 'OFF' ELSE NULL END FROM sys.sql_logins WHERE name = @name SELECT @is_expiration_checked = CASE is_expiration_checked WHEN 1 THEN 'ON' WHEN 0 THEN 'OFF' ELSE NULL END FROM sys.sql_logins WHERE name = @name SET @tmpstr = 'CREATE LOGIN ' + QUOTENAME( @name ) + ' WITH PASSWORD = ' + @PWD_string + ' HASHED, SID = ' + @SID_string + ', DEFAULT_DATABASE = [' + @defaultdb + '], DEFAULT_LANGUAGE = [' + @language + ']' IF ( @is_policy_checked IS NOT NULL ) BEGIN SET @tmpstr = @tmpstr + ', CHECK_POLICY = ' + @is_policy_checked END IF ( @is_expiration_checked IS NOT NULL ) BEGIN SET @tmpstr = @tmpstr + ', CHECK_EXPIRATION = ' + @is_expiration_checked END END IF (@denylogin = 1) BEGIN -- login is denied access SET @tmpstr = @tmpstr + '; DENY CONNECT SQL TO ' + QUOTENAME( @name ) END ELSE IF (@hasaccess = 0) BEGIN -- login exists but does not have access SET @tmpstr = @tmpstr + '; REVOKE CONNECT SQL TO ' + QUOTENAME( @name ) END IF (@is_disabled = 1) BEGIN -- login is disabled SET @tmpstr = @tmpstr + '; ALTER LOGIN ' + QUOTENAME( @name ) + ' DISABLE' END PRINT @tmpstr PRINT 'GO' DECLARE server_role_members_curs CURSOR FOR SELECT (SELECT [name] FROM sys.server_principals WHERE principal_id = role_principal_id) AS rolename FROM sys.server_role_members WHERE member_principal_id = @Principal_id OPEN server_role_members_curs FETCH NEXT FROM server_role_members_curs INTO @rolename WHILE (@@fetch_status <> -1) BEGIN SELECT @tmpstr = 'EXEC master..sp_addsrvrolemember @loginame = N''' + @name + ''', @rolename = N''' + @rolename + '''' PRINT @tmpstr PRINT 'GO' FETCH NEXT FROM server_role_members_curs INTO @rolename END CLOSE server_role_members_curs DEALLOCATE server_role_members_curs END FETCH NEXT FROM login_curs INTO @Principal_id, @SID_varbinary, @name, @type, @is_disabled, @defaultdb, @language, @hasaccess, @denylogin END CLOSE login_curs DEALLOCATE login_curs GO DROP PROCEDURE #sp_hexadecimal GO