auditLevel:

• off - absolutely no logging performed WHATSOEVER; MAY result in a slight performance boost for processing instances.
• minimal - all events are logged; however, no audit details are logged.
• production - all events are logged. The audit details for assign activities are not logged; the details for all other nodes are logged.
• development - all events are logged; all audit details for all activities are logged.

auditDetailThreshold: 

The maximum size (in bytes) an audit TRAIL details string can be before it is stored SEPARATELY from the audit trail. If a details string is larger than the threshold it will not be immediately loaded when the audit trail is initially retrieved; a link will be displayed with the size of the details string. Typically, the details string will contain the contents of a BPEL variable. In cases where the variable is very LARGE performance may be severely impacted by logging it to the audit trail. The default value is 50 kilobytes.

auditLevel:

auditDetailThreshold: 

The maximum size (in bytes) an audit trail details string can be before it is stored separately from the audit trail. If a details string is larger than the threshold it will not be immediately loaded when the audit trail is initially retrieved; a link will be displayed with the size of the details string. Typically, the details string will contain the contents of a BPEL variable. In cases where the variable is very large performance may be severely impacted by logging it to the audit trail. The default value is 50 kilobytes.