Learn how to read an Event Viewer.

Oracle Database for Windows events are displayed with a source of Oracle.SID.

Event number 34 specifies an audit trail event. These events are recorded if the parameter AUDIT_TRAIL is set to db (true) or os in the initialization parameter file. Option os enables systemwide auditing and causes audited records to be written to Event Viewer. Option db enables systemwide auditing and causes audited records to be written to the database audit trail (table SYS.AUD$). Some records, however, are written to Event Viewer.

Event numbers other than 34 specify general database activities, such as an instance being started or stopped.

When you double-click an icon in Event Viewer, the Event Properties dialog box appears with more information about the selected event. Event Properties General Tab, for example, shows details about Event ID 4112. In the General tab, you find a text description of the event. In the Details tab, you can select Friendly View to see the System and Event Data in words or XML View to see the same information in XML format, as shown in Event Properties Details Tab.