How do I see which USB port version I have?

How do I check and see if I have a USB 1.1 port or a USB 2 port? I have been told that all iBook G4's have USB 2 ports, however I have had trouble with my USB headset and just want to make sure I have a compatible unit plugged into the correct port.
Thanks.

Hi Lyssa,
I have a Logitech USB Headset, it is a mic and headphone set and while recording in Garage Band I have been experiencing an echo on playback of my recording. I thought it may have something to do with being a USB 1.1 port and the headset being a USB 2. However if you tell me my computer has a USB 2 then I am back at the drawing board to figure out why the echo. I have tried attaching a friends USB 2 mic to my computer and it would not recognize it, hence my thought that I had a USB 1.1 port. Any advise would be appreciated.

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Hi,
I need help badly with this because I cannot get my head around the problem. I have a Windows server 2003 Enterprise 64-bit running Oracle 10.2.0.3 and last night it started consuming 100% CPU. The Windows performance monitor shows 100% CPU in any case, and it was difficult to even login via remote desktop.
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-- (c) Kyle Hailey 2007
col type for a10
select * from (
select
ash.SQL_ID , ash.SQL_PLAN_HASH_VALUE Plan_hash, aud.name type,
sum(decode(ash.session_state,'ON CPU',1,0)) "CPU",
sum(decode(ash.session_state,'WAITING',1,0)) -
sum(decode(ash.session_state,'WAITING', decode(wait_class, 'User I/O',1,0),0)) "WAIT" ,
sum(decode(ash.session_state,'WAITING', decode(wait_class, 'User I/O',1,0),0)) "IO" ,
sum(decode(ash.session_state,'ON CPU',1,1)) "TOTAL"
from v$active_session_history ash,
audit_actions aud
where SQL_ID is not NULL
and ash.sql_opcode=aud.action
and ash.sample_time > sysdate - &minutes /( 60*24)
group by sql_id, SQL_PLAN_HASH_VALUE , aud.name
order by sum(decode(session_state,'ON CPU',1,1)) desc
) where rownum < 10
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SQL_ID PLAN_HASH TYPE CPU WAIT IO TOTAL
cxk376gut06wn 3831248992 SELECT 12 145 5855 6012
4ffvdt72n46yt 4094592372 SELECT 0 3 1131 1134
dnxgm7bg8wqg1 4025412530 SELECT 3 13 337 353
3y0dyvkc9sx69 1764840833 SELECT 18 169 56 243
abz05715h08ct 1967470119 SELECT 0 7 175 182
4gd6b1r53yt88 0 UNKNOWN 0 92 4 96
9phhuzxpqwsgc 2662599208 SELECT 0 67 0 67
275bbj5czbrwp 629013258 SELECT 0 2 64 66
1dvrrg3aah2mu 75914095 SELECT 0 6 57 63
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SQL_ID cxk376gut06wn, child number 2
SELECT NVL(MIN(ID),0) FROM TABLE_OBFUSCATED WHERE TASK = :B1 AND
STATUS='JobQueue' AND MESSAGE_ID IS NULL
Plan hash value: 3831248992
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | | | 3231 (100)| |
| 1 | SORT AGGREGATE | | 1 | 42 | | |
|* 2 | TABLE ACCESS FULL| TABLE_OBFUSCATED | 3 | 126 | 3231 (1)| 00:00:39 |
Predicate Information (identified by operation id):
2 - filter(("TASK"=:B1 AND "STATUS"='JobQueue' AND "MESSAGE_ID" IS NULL))
It doesn't seem to fit! It's such a simple statement, but according to ash this is the sql using the most total cpu over the last 30 minutes?? So I create a temp index on the filter and check the plan for the statement again, and it uses the index, but I need to kill the session or bounce the database for the new plan to be used because the currently running session is still using the old plan. Customer was desperate to get it down so I even tried flushing the shared pool but new plan does not get used. I did not want to restart the database. Do I have to kill all sessions using that plan for the new one to take effect?
Now im stuck. I don't really know how else to get an accurate picture of which sql is currently consuming CPU. I need to know this to try to fix the SQL because stopping the application is not an option, even if it is throwing too much at the database. The only other option I can think of is setting up profile limits for cpu consumption in oracle, but then the job will likely take an unacceptable amount of time for the customer.
So my questions are:
1. How else can I check which SQL is using CPU accurately?
2. Does the SQL I show above accuratlely display current average CPU over x minutes with ASH? Why is it so low for the top consumer but my CPU is still at 100% on the OS?
Thankyou for your help.

Yeah, OK, I can see an arbitary number for CPU used since session startup (what does that refer to by the way? It can't be percent), and I can see that one user has consumed massive amounts of CPU compared to all other sessions, but he is currently not running anything, so how can I see which SQL he ran in the past day that cuased all that CPU consumption? Can I do this without AWR?
By the way, do you need a Diagnostic Pack license for simply viewing the Performance tab of dbconsole? I Can go into dbconsole and see history for 2 days back and see the massive espike that caused CPU consumption, but when dbconsole displays the list of top SQL and top sessions under the graph, is it the top listed SQL that consumed the most cpu or do you need to correlate the colours, i.e. find the SQL listed in top SQL that has the same colour as CPU usage on the graph (green) even if it is not listed as the top "consumer" (which I assume means top AAS consumer: overall consumption of all resources)?

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