Need to Perform Check again and again in Oracle Workflow

Hi All,
I have one requirement in Oracle Workflow where if there is any hold applied on any Invoice and if the hold is released then workflow should get cancel immediately.
I have one workflow activity which can check the current status on workflow by querying AP_HOLDS_ALL table.
How I can perform the same check again and again to check the current status so that I can immediately cancel the workflow?? Please suggest if anybody has any idea like do-while Loop etc to achieve the requirement.
Thanks.
Viswas

WF Definition loops are expensive for the background process and take good amount of data in wf_item_activity_statuses and wf_item_activity_statuses_h. I would recommend defining a business event to be raised from the form/module where the base table is updated. Then you create a subscription to that event and the function associated to that subscription can abort the workflow process.
So there would not be a need to constantly check for a condition.
Regards,
Alejandro

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