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C＃、ASP.Net、SQL Server 2005、およびWindows Server 2008で構築された私の会社の内部プロジェクトの1つでは、誰かがログインしようとすると、ログインストアドプロシージャに無限の時間がかかります。しかし、データベースサーバーを再起動すると、問題は修正されます。これは毎日起こります。他のストアドプロシージャは正常に機能するため、これはデータベースのロードの問題ではない可能性があります。また、ストアドプロシージャ内でクエリを引き出すと、適切なタイミングで結果が得られます。データのフェッチとは別に、ストアドプロシージャには、ユーザーを一部のIPのみに制限するif条件があります。

何が問題なのかわかりません。誰かが問題を理解するのを手伝ってくれませんか。前もって感謝します。

これがストアドプロシージャです

ALTER PROCEDURE [dbo].[get_user]          
@username varchar(50), @pwd varchar(50), @passcode varchar(50), @ipaddress varchar(15)          
AS          
BEGIN          
 IF(@ipaddress = 'aaa.aaa.aaa.aaa' OR @ipaddress = 'aaa.aaa.aaa.aaa' OR @ipaddress = 'aaa.aaa.aaa.aaa')          
 BEGIN          
  IF EXISTS(select up_id from tbl_user_profile (nolock) WHERE up_status='Y')          
  BEGIN          
   DECLARE @ri_date_time varchar(20)          
   SET @ri_date_time=convert(varchar(50),getdate(),120)          
   DECLARE @user_exists as int          
   Set @user_exists = 0          
   Set @user_exists = (Select count(*) from tbl_recent_items (nolock) where ri_user_name=@username)          
   IF @user_exists = 0          
   BEGIN          
    BEGIN TRAN          
     INSERT INTO tbl_recent_items (ri_user_name, ri_access_date_time) values (@username, @ri_date_time+'|'+@ipaddress+'^')          
     IF @@error=0 COMMIT TRAN ELSE ROLLBACK TRAN          
   END          
   ELSE          
   BEGIN          
    DECLARE @datetext varchar(max)          
    SET @datetext = (select isnull(ri_access_date_time,'') from tbl_recent_items(nolock) where  ri_user_name=@username)          
    SET @datetext=@ri_date_time+'|'+@ipaddress+'^'+@datetext          
    BEGIN TRAN          
     UPDATE tbl_recent_items Set ri_access_date_time=@datetext where ri_user_name = @username          
     IF @@error=0 COMMIT TRAN ELSE ROLLBACK TRAN          
   END          
  END          
  SELECT CONVERT(varchar(4),up_id) as up_id,LTRIM(RTRIM(isnull(up_user_name,''))) as u_user_name,           
  ISNULL(up_password,'') as u_user_password,isnull(up_first_name,'') as up_first_name,           
  ISNULL(up_middle_name,'') as up_middle_name, isnull(up_last_name,'') as up_last_name,           
  ISNULL(up_branch_id,'') as up_branch_id, isnull(b_branch_id,'') as b_branch_id,          
  ISNULL(b_branch_name,'') as b_branch_name,isnull(up_mobile_phone,'') as up_mobile_phone,          
  --ISNULL(up_pager_phone,'') as up_pager_phone,  
  isnull(up_email,'') as up_email,          
  ISNULL(up_status,'') as u_status,   
  --isnull(up_job_posting_phone,'') as up_job_posting_phone,          
--  ISNULL(up_level,'') as up_level, 
    isnull(up_trainee,'0') as up_trainee,          
  ISNULL(up_senior,'0') as up_senior, isnull(up_team_lead,'0') as up_team_lead, isnull(up_ist,'0')as up_ist, up_hyd_branch,    
  convert(varchar(10),up_password_date,102)as up_password_date    
  FROM tbl_user_profile (nolock)           
  LEFT OUTER JOIN tbl_branches (nolock) on up_branch_id = b_id where           
  up_user_name = @username and up_password =@pwd          
 END          
 IF EXISTS(select up_id from tbl_user_profile (nolock) WHERE up_user_name = @username and up_password = @pwd and up_passcode = @passcode and up_status='Y')          
 BEGIN          
  IF EXISTS(select up_id from tbl_user_profile (nolock) WHERE up_status='Y')          
  BEGIN          
   DECLARE @ri_date_time1 varchar(20)          
   SET @ri_date_time1=convert(varchar(50),getdate(),120)          
   DECLARE @user_exists1 as int          
   Set @user_exists1 = 0          
   Set @user_exists1 = (Select count(*) from tbl_recent_items (nolock) where ri_user_name=@username)          
   IF @user_exists1 = 0          
   BEGIN          
    BEGIN TRAN          
     INSERT INTO tbl_recent_items (ri_user_name, ri_access_date_time) values (@username, @ri_date_time1+'|'+@ipaddress+'^')          
     IF @@error=0 COMMIT TRAN ELSE ROLLBACK TRAN          
   END          
   ELSE          
   BEGIN          
    DECLARE @datetext1 varchar(max)          
    SET @datetext1 = (select isnull(ri_access_date_time,'') from tbl_recent_items(nolock) where  ri_user_name=@username)          
    SET @datetext1=@ri_date_time1+'|'+@ipaddress+'^'+@datetext1          
    BEGIN TRAN          
     UPDATE tbl_recent_items Set ri_access_date_time=@datetext1 where ri_user_name = @username          
     IF @@error=0 COMMIT TRAN ELSE ROLLBACK TRAN          
   END          
  END          
  SELECT CONVERT(varchar(4),up_id) as up_id,LTRIM(RTRIM(isnull(up_user_name,''))) as u_user_name,           
  ISNULL(up_password,'') as u_user_password,isnull(up_first_name,'') as up_first_name,           
  ISNULL(up_middle_name,'') as up_middle_name, isnull(up_last_name,'') as up_last_name,           
  ISNULL(up_branch_id,'') as up_branch_id, isnull(b_branch_id,'') as b_branch_id,          
  ISNULL(b_branch_name,'') as b_branch_name,isnull(up_mobile_phone,'') as up_mobile_phone,          
  --ISNULL(up_pager_phone,'') as up_pager_phone,  
  isnull(up_email,'') as up_email,          
  ISNULL(up_status,'') as u_status,  
   --isnull(up_job_posting_phone,'') as up_job_posting_phone,          
--  ISNULL(up_level,'') as up_level, 
 isnull(up_trainee,'0') as up_trainee,          
  ISNULL(up_senior,'0') as up_senior, isnull(up_team_lead,'0') as up_team_lead,isnull(up_ist,'0')as up_ist, up_hyd_branch,    
  convert(varchar(10),up_password_date,102)as up_password_date    
  FROM tbl_user_profile (nolock)           
  LEFT OUTER JOIN tbl_branches (nolock) on up_branch_id = b_id where           
  up_user_name = @username and up_password =@pwd          
 END          
END
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1 に答える 1

2

そのプロシージャのためにキャッシュされた不正な実行プランを取得しているようです。コードを見ずに言うのは難しいですが、パラメータのスニッフィングが問題になる可能性があります。考えられる回避策の1つは、WITHRECOMPILEオプションを使用することです。これにより、ストアドプロシージャは毎回再コンパイルされ、新しい実行プランが生成されます。

CREATE PROCEDURE YourLoginProc
WITH RECOMPILE
AS
...
于 2012-09-07T20:38:21.403 に答える