I'm trying to us SQL-DMO in a script to control SQL 2000 jobs. Part of what
I want to do is to manage the job history and remove selected job history
records. I have successfully used the JobHistoryFilter object with the
EnumJobHistory Method to select and display the records I want to delete.
However, passing the same JobHistoryFilter object to the PurgeJobHistory
Method doesn't work! That is, the JobHistoryFilter doesn't constrain the
purge action. I've included a sample of the code and would appreciate some
insight as to how you are supposed to use the PurgeJobHistory method to
delete specific history records.

thanks,
scott

---------------------------
Sample JScript Code:

var oSQLServer = new ActiveXObject("SQLDMO.SQLServer");
var objJob = new ActiveXObject("SQLDMO.Job");
var objJobSchedule = new ActiveXObject("SQLDMO.JobSchedule");


var objJobHistory;
var objJobHistoryFilter;
var qr ;

// Connect to the server
oSQLServer.LoginSecure = true;
oSQLServer.Connect ("ServerName");

// Get the job to modify
objJob = oSQLServer.JobServer.Jobs("JobName");
objJobHistoryFilter = oSQLServer.JobServer.JobHistoryFilter;
objJobHistoryFilter.JobName = objJob.Name;

// I want to remove all the failed history records from the start of the job
// until the file was found, so set the properties on the JobHistoryFilter
object
objJobHistoryFilter.StartRunDate = '20041116';
objJobHistoryFilter.EndRunDate = '20041116';
objJobHistoryFilter.StartRunTime = '121800';
objJobHistoryFilter.EndRunTime = '131900';

// This code runs correctly, selecting the records according to the
properties set in the JobHistoryFilter object.
qr = oSQLServer.JobServer.EnumJobHistory(objJobHistoryF ilter) ;

WScript.echo ("Records = " + qr.Rows);

for (e = 1; e < qr.Rows; e++)
{
WScript.echo(qr.ColumnName(1) + " - " + qr.GetColumnString(e, 1));
WScript.echo(qr.ColumnName(2) + " - " + qr.GetColumnString(e, 2));
WScript.echo(qr.ColumnName(3) + " - " + qr.GetColumnString(e, 3));
WScript.echo(qr.ColumnName(4) + " - " + qr.GetColumnString(e, 4));
WScript.echo(qr.ColumnName(5) + " - " + qr.GetColumnString(e, 5));
WScript.echo(qr.ColumnName(6) + " - " + qr.GetColumnString(e, 6));
WScript.echo(qr.ColumnName(7) + " - " + qr.GetColumnString(e, 7));
WScript.echo(qr.ColumnName(8) + " - " + qr.GetColumnString(e, 8));
WScript.echo(qr.ColumnName(9) + " - " + qr.GetColumnString(e, 9));
WScript.echo(qr.ColumnName(10) + " - " + qr.GetColumnString(e, 10));
WScript.echo(qr.ColumnName(11) + " - " + qr.GetColumnString(e, 11));
WScript.echo(qr.ColumnName(12) + " - " + qr.GetColumnString(e, 12));
WScript.echo(qr.ColumnName(13) + " - " + qr.GetColumnString(e, 13));
WScript.echo(qr.ColumnName(14) + " - " + qr.GetColumnString(e, 14));
WScript.echo(qr.ColumnName(15) + " - " + qr.GetColumnString(e, 15));
WScript.echo(qr.ColumnName(16) + " - " + qr.GetColumnString(e, 16));
WScript.echo(qr.ColumnName(17) + " - " + qr.GetColumnString(e, 17));
}

// Now I pass in exactly the same JobHistoryFilter object and instead of
deleting the
// specified records (records created on 11 Nov 2004 between 12:18 and
13:19), ALL history records are deleted. However, it does seem to constrain
itself by the jobname, i.e. all history records for the specified job are
deleted, but not for every job.

oSQLServer.JobServer.PurgeJobHistory(objJobHistory Filter);