Background script vs scheduled job

Trying to run a query against v_cluster_transaction table in a scheduled job, doesnt seem to be working. Same script is working if run as background script:

var transactionCount = 0;
var gr = new GlideRecord("v_cluster_transaction");
gr.addQuery("age", ">=", gs.getDurationDate('0 0:0:1'));
gr.query();
while(gr.next())
{
transactionCount++;
}
if(transactionCount> 0)
{
gs.log(transactionCount + ' Transactions were cancelled');
}