V$CALLTAG

V$CALLTAG ???.

Column	Datatype	Description
SESSION_ID	NUMBER	???
PERFORMANCE_CLASS	VARCHAR2(32)	???
WORK_REQUEST_CLASS	VARCHAR2(32)	???
HOP_COUNT	NUMBER	???
SERVICE_NAME	VARCHAR2(64)	???
MODULE	VARCHAR2(48)	???
ACTION	VARCHAR2(32)	???
USERNAME	VARCHAR2(30)	???
PROGRAM	VARCHAR2(48)	???