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