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We use sp_send_dbmail in SQL Server 2005 within a  Trigger, But there is a problem.  when the appllication hits it, it just makes the application hang and the sql server datbase is locking, too.

Posted on 2007-11-20
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Last Modified: 2008-02-01
Dear Sir/Madam
We use sp_send_dbmail in SQL Server 2005 within a  Trigger, But there is a problem.  when the appllication hits it, it just makes the application hang and the sql server datbase is locking, too.

Here is our trigger:

USE [GSBHEAT]
GO
/****** Object:  Trigger [dbo].[ExecEmailHeat]    Script Date: 11/20/2007 07:36:36 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO



ALTER TRIGGER [dbo].[ExecEmailHeat] ON [dbo].[email_survey]
FOR INSERT
AS
DECLARE @dir varchar(5)
DECLARE @CallID varchar(20)
DECLARE @rating varchar(10)
DECLARE @knowledge varchar(10)
DECLARE @Courteous varchar(10)
DECLARE @followup varchar(10)
DECLARE @Comments varchar(250)
DECLARE @L_Status      int
Select @dir=exdir, @CallID=callid,   @rating=rating, @knowledge=knowledge, @Courteous=courteous,

@followup=followup, @Comments=Rtrim(Ltrim(comments)) From INSERTED

IF @dir='Yes'
BEGIN
      CREATE TABLE yw_texttab (c1 varchar(500), c2 varchar(500))
      INSERT yw_texttab Select  'Please Contact ' +  p.firstname + ' ' + p.lastname
                        + ' regarding HEAT call ' + c.callid
                        + ' The current phone number is ' + p.Phone  + ' The survey feedback is

listed as follows',' Rating = ' + @rating + '  Knowledgeable='  + @knowledge + ' Courteous=' +  @Courteous
                        + '  followup=' +  @followup + '  Comments=' +  @Comments
      from calllog c, profile p
      where c.custid=p.custid
      and c.callid=@Callid


--      DECLARE @cmd varchar(1000)
--      SET @cmd = 'SELECT RTRIM(c1), RTRIM(c2) FROM yw_texttab'
      EXEC msdb.dbo.sp_send_dbmail
        @recipients='yong.wu@chicagogsb.edu',
        @profile_name = 'sqlserver',  
        @query = 'SELECT COUNT(*) FROM yw_texttab',
            @query_result_header= 'TRUE',
            @Subject='Request Executive Director Follow up',
--            @set_user='dbo',
            @execute_query_database='gsbheat';
END
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Comment
Question by:yong_wu
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3 Comments
 
LVL 15

Accepted Solution

by:
spprivate earned 2000 total points
ID: 20319919
Actually there are few points.
First you are trying to create a table for every insert which is wrong.
Second Triggers by themselves make the application very slow in responding and over that the send email will have some overhead.
What I understand is you are trying to get some information on  survey and email it as and when entered right/
0
 

Author Comment

by:yong_wu
ID: 20319955
That's right; create table and insert data have no problem at all; the only problem is send the email which is the very last part  start with
EXEC msdb.dbo.sp_send_dbmail
       
0
 
LVL 25

Expert Comment

by:imitchie
ID: 20324248
sp_send_dbmail should not be used inside a transaction
i don't know if a trigger counts as one.

http://www.eggheadcafe.com/forumarchives/SQLServerserver/Dec2005/post25450969.asp

may be better inserting a record into some table, and create an SQL job that will recur every minute - to check that table for emails to send?
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