Chandini
Straight from the 8I Refernce guide page 346 - I couldn't explain it better
myself :) Well done Oracle..
--Snip--
GV$ Views
For almost every V$ view described in this chapter, Oracle has a
corresponding GV$
(global V$) view. In a parallel server environment, querying a GV$ view
retrieves
the V$ view information from all qualified instances. In addition to the V$
information, each GV$ view contains an extra column named INST_ID of
datatype INTEGER. The INST_ID column displays the instance number from which
the associated V$ view information was obtained. The INST_ID column can be
used
as a filter to retrieve V$ information from a subset of available instances.
For
example, the query:
SELECT * FROM GV$LOCK WHERE INST_ID = 2 OR INST_ID = 5
retrieves the information from the V$ views on instances 2 and 5.
In order to query the GV$ views, the value of the PARALLEL_MAX_SERVERS
parameter must be greater than zero on all instances mounting the database.
The sections that follow list the columns and public synonyms for the
dynamic
performance views.
--snip--
HTH
Mark
-----Original Message-----
Paterson
Sent: Thursday, February 01, 2001 12:31
To: Multiple recipients of list ORACLE-L
Hi,
I was just looking at the data dictionary (dict table) and came upon a
whole list of views that have similar names to the dynamic views (V$), but
all start with GV$.
EG:- GV$DLM_LOCKS
GV$LOCK
etc.
There almost seems to be one GV$ view for each V$ view. Would somebody tell
me what these views are and why they are used. Oh, I am on ver 8.1.5 by the
way.
Thanks a lot
Chandini Paterson
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