$ sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Wed Jan 31 10:52:16 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> conn / as sysdba
Connected.
SQL> desc v$event_name
Name Null? Type
----------------------------------------- -------- --------------------
EVENT# NUMBER
EVENT_ID NUMBER
NAME VARCHAR2(64)
PARAMETER1 VARCHAR2(64)
PARAMETER2 VARCHAR2(64)
PARAMETER3 VARCHAR2(64)
WAIT_CLASS_ID NUMBER
WAIT_CLASS# NUMBER
WAIT_CLASS VARCHAR2(64)
SQL> select count(*) from v$event_name;
COUNT(*)
----------
874
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