Meaning Of Lines CPU Cores And 99th Percentile In Average Active Session
Apr 18, 2013
I´m monitoring a 11g database with OEM. I have a couple of questions regarding the Average Active Sessions chart:
- What does the line 'CPU core' means? The DB is running in a virtual server with 8 CPUs. However, the line 'CPU core' is in 1. Does it mean that Oracle is just using 1 CPU?
- What represents the '99th percentile' line? The chart shows several sessions above that line, something is not working well, isn't it?
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Sep 13, 2013
11.2.0.3 EVENTS: Null(blank) or called a 'null event' See link. Checked the docs. I don't see anythingI think a null (blank) is for an idle wait since per the V$ACTIVE_SESSION_HISTORY spec these are not record. Am I correct?What is a 'null event'. I see a paper from Oracle magician dating to 9i that says this is an 'oracle goof'. Descriptions of Wait Events
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Oct 1, 2012
Server:
Windows 2008 R2 x64
Oracle Database 11g Release 11.2.0.1.0 Standard Edition
I recently applied the Oracle® Database Server Version 11.2.0.1 Patch 16 I have several databases running on this box with the same application.Since then I've had lots of customers complaining about slow systems. The server has plenty of RAM availableI also have several other servers all on the same versions, same patch, running the same application with no issues.
Looking at v$session there are often lots of active sessions that have a sql_address of "00". I've never seen this before and I regularly look at v$session, as you can see for below these have been running for a while. The sessions do drop off but I am at a loss as to what is happening.
select username, last_call_et, sid, serial#, user#, status, sql_address, sql_hash_value
from v$session
where username is not null and status = 'ACTIVE'
order by last_call_et desc, sid
[code]...
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Jul 14, 2012
I have a table as:
ID VALUE
---------- ----------
1 2
1 14
1 41
1 42
1 42
1 48
1 56
1 65
1 86
1 93
2 15
2 36
2 42
2 48
2 62
2 75
2 75
2 85
2 85
2 99
There are millions of distinct ID and more than 5000 VALUE's(in ascending order) for each ID.
I need to find the VALUE stored at [int((95 / 100) * COUNT(ID)) - 1] column for each ID, where COUNT(ID) is the no of rows for each ID.
The result will be as
ID VALUE
---------- ----------
1 86
2 85
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Oct 15, 2013
I am getting starting with rac environments. I need to configure a two nodes active/active with rac and I need to know if always using rac both nodes will be active or if I have to do that at some point when installing. I have reading some docs from oracle and others authors about rac and its configuration process but that is not understood for my yet.
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Jul 25, 2012
We are using oracle as database in our application. For high availability we have a cluster of multiple nodes and the data is replicated using oracle streams. All the nodes in the cluster are active. We do not have any concept of stand-by.
Now we are planning to use oracle RMAN for backup and recovery. RMAN user's guide doesn't recommend any strategies for such deployments. It mainly focuses on primary/stand-by deployments.
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Apr 9, 2013
I am developing in the Report tool.I wonder what the meaning of the sentence SRW.USER_EXIT, and arguments that are used in it.
For example,
srw.user_exit('FND FLEXIDVAL
CODE=" "
NUM=" "
APPL_SHORT_NAME=" "
DATA=" "
VALUE=" "
DISPLAY=" "
DISPLAY=" "
IDISPLAY=" "
IDISPLAY=" "');
return();
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Jul 6, 2010
i want to understand each and every concept of oracle.in this book they explained about escape character, but stiil i cant get it..i want to understand why used escape character in 2nd query and whats its effects...
1. SQL> SELECT first_name, last_name
FROM employees
WHERE first_name LIKE 'Su%'
AND last_name NOT LIKE 'S%';
2. SELECT job_id, job_title
FROM jobs
WHERE job_id like 'AC\_%' ESCAPE '';
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Jul 3, 2010
what is mean by system.message_level..
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Aug 18, 2013
What's the meaning of "partition by null" in analytic functions like
select emp_no, dept_nm, count(*) over(partition by null) cnt
from some_table
is it right there is no partition?
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Jan 8, 2012
whats the meaning of BOUNDED RECOVERY in golden gate. I just know RECOVERY in oracle.. What is the difference when you say BOUNDED RECOVERY.
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Aug 12, 2013
what is meaning for port number,in listener.ora file associated with ? is there any difference for port number in windows & in linux server.,?
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Nov 19, 2012
I have an urgent requirement to kill an existing session if a new session starts for the same user. I have been reading lot of blogs and posts on the above topic, but could clearly tell me how to do it.
I thought of putting a process in 101 page when login button is pressed to catch this and kill the old session.
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Oct 23, 2012
We are using Apex 4.0/Oracle 10gR2/ Hp-Ux, We noticed that there is a process Running in Two Sessions that seems running since 3 Hours using 60% CPU,** 30% given below sql it executes in two Sessions!
declare function x return boolean is begin -- if instr(upper(:F4000_P4651_PLUG_SOURCE),'ORDER BY')>0 then
declare
l_position number := 0;
begin
loop
l_position := instr(upper(:F4000_P4651_PLUG_SOURCE),'ORDER BY ',l_position + 1) ;
exit when instr(upper(:F4000_P4651_PLUG_SOURCE),'ORDER BY ',l_position + 1) = 0 ;
[code]....
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Sep 27, 2011
I have a table with products (xPRODUCT), dates (xDATE) and parameters (xPARAMETER). Now I want to calculate the rolling 12 month average of the parameters over all products for all dates. I tried this:
select xDATE,
avg(xPARAMETER) over ( order by xDATE
range between numtodsinterval(365,'day')
preceding and current row )
[Code]....
... but this does not work. How can I do this?
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May 9, 2010
I wish to query the pro_vitual_bytes by hourly average by server name from 04/01/2010 to 04/02/2010. how i going to perform the query.
SERVER_NAME DATE_TIME PRO_VITUAL_BYTES
MLYORABA04/01/2010 00:00:402,238,312,448.00
MLYORABA04/01/2010 00:01:402,241,458,176.00
MLYORABA04/01/2010 00:02:402,238,312,448.00
MLYORABA04/01/2010 00:03:402,241,458,176.00
[Code]....
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Aug 28, 2013
Instead of giving permission directly to v$session and gv$session to a developer, Is there any other way to do the same?
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Jul 31, 2012
how to get more lines into one line per customer.
For instance:
CREATE TABLE XXX_MAPE_CC
(
accounting_month_key number,
customer_key VARCHAR2(18 BYTE),
total_amount VARCHAR2(29 BYTE)
)
insert into XXX_MAPE_CC
values (201205, 313774201, '15,03')
[code]...
And I would like get every total_amount to individual columns by accounting_month_key
--------------------------------------------------------------------------
customer_key month_201205 month_201206 month_201207
----------------------------------------------------------------------------
313774201 15,03 10,03 13,10
----------------------------------------------------------------------------
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Apr 5, 2011
How To Calculate Average in Forms 6i for example a summary column named (Amount = 5000) and i want to calculate 15% average of this amount i want to calculate it like summary column .
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Jun 17, 2010
how to calculate the average of the time in th e HH:MM:SS format stored database table.. column contains hundreds of time values and need to table the avergae of it
my col look like,and column is declared as timestamp(6).
MY COL
------
1:13:00
1:06:00
0:43:00
0:47:00
0:32:00
0:19:00
0:39:00
0:46:00
0:56:00
1:39:00
[Code]...
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Nov 23, 2012
Version : 11g
I have a table with the following format and data
Serial no exp_Date exp_type exp_amount
1 01-nov-2012 Rent 10000
2 02-nov-2012 gas 250
3 02-nov-2012 insurance 9500
.
.
.
I want to create a sql output for a yearly view in the format
exp_type JAN FEB MAR APR ..... NOV DEC TOTAL AVERAGE PROJECTED
Rent 10000 10000 10000 10000 10000 10000 120000 10000 120000
gas 250 250 250 250 250 250 3000 250 3000
.
.
Now a couple of things in this
1. the average gives the average for the year, so lets say its start of 2013 and we are in feb, there will not be any values for the remaining months, so it should do the average for that exp_type for Jan and Feb based on the exp_amount entered against that type and show what is the expected average. Similary, projected will that average amount and mulitply it by 12 to show the exp amount expected based on current expenses
I was able to come up with the following sql to get the sum based on months, was not sure about average, total and projected
SELECT exp_type
, SUM (CASE WHEN to_char(exp_date,'Mon') = 'Jan' THEN exp_amt END) AS Jan
, SUM (CASE WHEN to_char(exp_date,'Mon') = 'Feb' THEN exp_amt END) AS feb
, SUM (CASE WHEN to_char(exp_date,'Mon') = 'Mar' THEN exp_amt END) AS Mar
, SUM (CASE WHEN to_char(exp_date,'Mon') = 'Apr' THEN exp_amt END) AS Apr
, SUM (CASE WHEN to_char(exp_date,'Mon') = 'May' THEN exp_amt END) AS May
[Code]....
getting the correct avg, total and projected fields also in the same sql?
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Jul 26, 2013
,I've some database in 11.2 RAC on AIX.I was analyzing the root causes of eviction.Looking AWR Report before the reboot I see:
DB1 Host CPU (CPUs: 6 Cores: 3 Sockets: )~~~~~~~~ Load Average Begin End %User %System %WIO %Idle --------- --------- --------- --------- --------- --------- 4.18 12.33 60.9 12.6 1.6 26.5 Instance CPU~~~~~~~~~~~~ % of total CPU for Instance: 27.4 % of busy CPU for Instance: 37.3 %DB time waiting for CPU - Resource Mgr: 10.6 DB2 Host CPU (CPUs: 6 Cores: 3 Sockets: )~~~~~~~~ Load Average Begin End %User %System %WIO %Idle --------- --------- --------- --------- --------- --------- 3.77 13.93 60.7 12.5 1.6 26.7 Instance CPU~~~~~~~~~~~~ % of total CPU for Instance: 6.9 % of busy CPU for Instance: 9.5 %DB time waiting for CPU - Resource Mgr: 0.0
Do you think these value ar high? This is vmstats at the time of reboot:
DATARUNBCKAVMFREPREPPIPPOPFRPSRPCYFINFSYFCSCUSCSYCIDCWA07/21/2013 00:08:173107.400.345579.92308100003.292187.01019.56084160007/21/2013 00:08:171717.390.187589.884017600003.681169.99421.48281190007/21/2013 00:08:172717.402.121577.816011500003.150157.21018.50384160007/21/2013
[code]...
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Jul 18, 2013
I'm trying to build a query capture the below information. Table looks something like below .
RoomSubjectStudentsA1Science10A1Maths20B1Science15B2English25C1Deutsch20A1French15C1English10
How can i write a query so that i takes the average of students in each room and display the output? I need to write a query so that it also picks up any new rooms and students added. Average is sum of total students in room by number of times each room is specified.
eg: A1 is listed 3 times a the result would be 10+20+15 divided by 3.
A1 B1 B2 C115 15 20 15
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May 16, 2007
In Oracle XE when I run PL/SQL in the SQL Commands window I will sometimes get a "Not found" error. It further reads, "The requested URL /apex/wwv_ flow.show was not found on this server". I found that if I remove all of the indentations from the lines of the PL/SQL code everything will work fine. Talk about a screwy problem. So, if you have that problem just take all of your PL/SQL code and slam it up against the left margin.
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Dec 15, 2011
I have to procedure that computes number of project, and average working hours of employees where employee id is passed as a parameter to the procedure. If the average working hours is less than 10 then employee's salary remain the same, otherwise check if number of project is less than 4 then 5% of salary, else 10% of salary is added to the salary.
my tables are:
CREATE TABLE employee(
empid number(5),
empname varchar(20),
address varchar(20),
no_of_dependents number(5),
deptno number(5),
CONSTRAINT EMPLOYEE_PKEY PRIMARY KEY(empid),
CONSTRAINT EMPLOYEE_FKEY FOREIGN KEY(deptno) REFERENCES department(deptno));
[code]...
the problem is i have to use only 2 cursors - 1 for select and 1 for update.
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Jul 22, 2012
I want to write a sql qeuery to get result similar to expected average column as shown in sheet.
Record can be uniquely identified by columns ID, PRODUCT and OFFICE. I want to calculate average for each date considering the same record does not exists earlier i.e. I want to consider the latest vote while calculating average. E.g.
Average till date 1/1/2011 is Avg (2, 4, 3) = 3 (as no repeating vote value exists)
Average till date 2/1/2011 is Avg (4, 3, 5, 3) = 3.75 (excluding vote value 2 as 122_UK_LONDON was provided his vote earlier, so considered latest vote value i.e. 5)
Average till date 3/1/2011 is Avg (3, 5, 3, 6, 5, 8 ) = 5 (excluding vote value 2 for 122_UK_LONDON and vote value 4 for 967_Europe_London)
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Aug 10, 2013
I need to calcaulate the salary avarage for three days prior, leaving the current row. That should happen to every row moving back words.I have given all the details.
create table Employee(
ID VARCHAR2(4 BYTE) NOT NULL,
name varchar(20),
Start_Date DATE,
Salary Number(8,2),
mv_avg number(8,2)
[code]....
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May 2, 2013
I have the following query that creates sums by week.
SELECT cidterr.rnam,
cidterr.rnum,
cidterr.tnam,
cidterr.tnum,
[code]...
I want to convert this query to just return a single line for -cidterr.rnam, cidterr.rnum, cidterr.tnam, cidterr.tnum
With an average sum by week. Similar to how if I did a sum by week from the original query and placed the results into an excel pivot and said show total as average.
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Feb 27, 2013
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
PL/SQL Release 11.2.0.1.0 - Production
"CORE 11.2.0.1.0 Production"
TNS for HPUX: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
I have a problem related with hierarchical queries, I have this tree.
- a
/
b c
/ |
d e fI need to calculate an average per node but using always the child's results for example: Only leafs will have values:
d = 10
e = 20
f = 30
c = 40So the expected result is:
d = 10
e = 20
f = 30
c = 40
b = (10(d) + 20(e) + 30(f)) / 3 (number of child nodes) = 20
a = (20(b) + 40(c)) / 2 (number of child nodes) = 30.
I have tried with recursive queries, hierarchical queries, I guess it's possible with model too but I can't produce the exact results that I need. Maybe in fact there is a very simple solution but I cannot figure it.
Here is an auxiliary WITH that you can use to start your tests:
WITH tree AS
(
SELECT 'd' child, 'b' parent FROM dual UNION ALL
SELECT 'e' child, 'b' parent FROM dual UNION ALL
SELECT 'f' child, 'b' parent FROM dual UNION ALL
SELECT 'b' child, 'a' parent FROM dual UNION ALL
SELECT 'c' child, 'a' parent FROM dual UNION ALL
SELECT 'a' child, null parent FROM dual
[code]....
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Sep 6, 2012
I want added one new column in the below report which will shows only the items purchased on Cash basis but when i am running the query the column not showing any data.
The query is :
Select DISTINCT ou.name||' Spare Parts' ORG, oh.order_number, trx.trx_number, trx.trx_date, p.party_name CUSTOMER, l.ordered_item,
/* ( Select Distinct it.description From MTL_SYSTEM_ITEMS_B it Where it.inventory_item_ID = l.inventory_item_id and it.organization_id = o.organization_id) Item_Desc, */
l.ordered_quantity, l.line_number,
l.inventory_item_id, l.unit_list_price , ----
a.account_number CST_NO ,
oh.Attribute1 MODEL , oh.Attribute2 SERL_NO, oh.attribute3 PAYM_MODE ,
u.user_name Prep_By, oh.CUST_PO_NUMBER PO_NUM,
[code]......
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