Slow SQL From Monitoring Software

Queries from monitoring software like BMC are not supposed to be among Top SQL, but that was happening in many databases at one site. This may happen if the dictionary statistics are not updated, leading Oracle to choose the wrong plan. Document with ID 1328789.1 on MOS shows an example of this. So the SQL that came from BMC sometimes took up to a minute and was executed every 5 minutes, easily making it to the Top SQL list in Enterprise Manager / Cloud Control. [Read More]