Databases
StackOverflow2013
Postsdbo
POHow can I have Sql Server 2005 asynchronously call a DOS batch file from a DDL trigger?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow can I have Sql Server 2005 asynchronously call a DOS batch file from a DDL trigger?
    primarykey
    data
    text
    <p>I created a batch file to run SqlMetal and generate Linq2Sql data classes, check into source control triggering a build, etc... I'd like to have this script run anytime there is a DDL change in Sql Server 2005.</p> <p>Running the batch file via xp_cmdshell works fine outside of a trigger, like this:</p> <pre><code>exec master..xp_cmdshell 'd:\dev\db_triggers\generatedataclasses.bat', no_output </code></pre> <p>But when it runs as a trigger, it always times out connecting to the database, causing all DDL to fail. Here's my trigger:</p> <pre><code>CREATE TRIGGER [Trig_SqlMetal] ON DATABASE FOR DDL_DATABASE_LEVEL_EVENTS AS exec master..xp_cmdshell 'd:\dev\db_triggers\generatedataclasses.bat', no_output </code></pre> <p>I'm looking for advice on two points:</p> <ol> <li>Make this work. For some reason it always fails when in the trigger, and doesn't when not in a trigger. Doesn't appear to be security related since it runs as LocalSystem in both cases.</li> <li>Make this happen asychronously so that failures and timeouts in SqlMetal don't cause DDL update failure. I've tried wrapping the batch file with another and a "start cmd.exe /c otherbatch.bat", but when running through sql server it seems to ignore the start (works fine from DOS). I could certainly write a polling process to look at some table and pickup events, but I'd prefer this be trigger based to make it less complex (or am I doing the opposite :) ).</li> </ol>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USTheSoftwareJedi
    1. USTheSoftwareJedi
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload