CPU used by the oracle process

Hello
10 g R2 on AIX 1.6 How to see the CPU used by the Oracle process?

Thank you.

By process, you can use:

You can use the command topas or svmon - G

By Session

use of v$ Session

Similar Questions

Hello

I read that the Oracle background processes are dbw0, lgw0, trunc, smon, pmon, cjq0 and arc0. However, I noticed that these processes are not in the list of processes. I'm in Oracle Database 11g in Oracle Enterprise Linux. I see that there is an Oracle process well. Background processes are included within the Oracle process for a given case?

Thank you in advance.

Justin

SQL> !ps -ef | grep oracle
oracle    8049     1  0 11:28 ?        00:00:09 ora_pmon_v102
oracle    8051     1  0 11:28 ?        00:00:00 ora_psp0_v102
oracle    8053     1  0 11:28 ?        00:00:00 ora_mman_v102
oracle    8055     1  0 11:28 ?        00:00:02 ora_dbw0_v102
oracle    8057     1  0 11:28 ?        00:00:02 ora_lgwr_v102
oracle    8059     1  0 11:28 ?        00:00:05 ora_ckpt_v102
oracle    8061     1  0 11:28 ?        00:00:08 ora_smon_v102
oracle    8063     1  0 11:28 ?        00:00:00 ora_reco_v102
oracle    8065     1  0 11:28 ?        00:00:06 ora_cjq0_v102
oracle    8067     1  0 11:28 ?        00:00:09 ora_mmon_v102
oracle    8069     1  0 11:28 ?        00:00:17 ora_mmnl_v102
oracle    8071     1  0 11:28 ?        00:00:00 ora_d000_v102
oracle    8073     1  0 11:28 ?        00:00:00 ora_s000_v102
oracle    8081     1  0 11:28 ?        00:00:00 ora_qmnc_v102
oracle    8097     1  0 11:28 ?        00:00:00 ora_q000_v102
oracle    8099     1  0 11:28 ?        00:00:00 ora_q001_v102
oracle   16549 16547  0 17:14 ?        00:00:03 oraclev102 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oracle   18768     1  7 18:40 ?        00:00:00 ora_j000_v102
bcm      18769 16547  0 18:40 pts/0    00:00:00 /bin/bash -c ps -ef | grep oracle
bcm      18771 18769  0 18:40 pts/0    00:00:00 grep oracle

CUT PASTE & is wonderful to show what you actually see.
Above is my CentOS V10.2.
What are you talking about, again?
Most of the above processes are Oracle background processes. Guess which ones who.

Area of private use in the Oracle database

Hello
one of my customers have very specific needs. In this case, it has its own "characters". It uses Latin characters and certain characters. Their data are mixture of these characters. Their own characters are not in Unicode format and we have specific policies.
These specific characters will be in the private use area, but I don't know if and how the Oracle database support unicode private use area.
Oracle database support unicode private use area?
And what sorting, filtering data? What classification is applied?
Does anyone have experience with characters in the private use area?
Thank you
Fabrice.

Oracle supports Unicode PUA you can store codes of PUA in a database AL32UTF8 and you can treat strings containing characters without special considerations. PUA characters are classified into letters in the Oracle database.

Oracle maps the characters (EUDC) user of various character sets defined multibyte (JA16SJIS, ZHS16GBK, ZHT16MSWIN950, KO16MSWIN949, etc.) to the characters of PUA. These characters are also used by the former Hong Kong HKSCS extension mapping. If supporting user-defined characters in PUA is not a problem for the customer, they can use the standard plane 0 (BMP) PUA [U + E000 to U + F8FF] in their purpose. However, to avoid conflicts with existing maps, they should put their characters in plane 15 PUA [U + F0000-U + FFFFD] or plane 16 PUA [U + 100000-U + 10FFFD]. The downside is that the planes 15 and 16 require four bytes per character in AL32UTF8 compared to three bytes for plane 0.

The classification applied to the characters PUA is the same as that applied to the other characters in a given environment. The order of the characters PUA in the given classification, depends on the type of snack:
- In BINARY classification, the comparison is obviously based on binary codes. The order depends on encoding (AL16UTF16 vs AL32UTF8), especially for aircraft 15 and 16 PUA plane.
- In monolingual rankings (which are not well suited for Unicode characters anyway) PUA are generally ignored in the sorting (but does not) than the characters defined explicitly in the given classification. Compared only among themselves, they use the UTF-16 Binary order.
- In multilingual characters rankings PUA are generally classified after all characters defined explicitly in the rankings, which are characters from scripts (Latin, Cyrillic, Greek, Georgian, Armenian) Europeans and, in some rankings, an East Asian script. Between them, they are classified according to AL16UTF16 (= UTF-16BE) binary collation.
- In the UCA, the characters multilingual rankings PUA generally are classified into once all characters defined explicitly in the rankings, which are usually all defined Unicode characters. Between them, they are classified according to AL32UTF8 (= UTF - 8) binary collation. Note that the UCA rankings are new in the database Oracle 12 c.
Thank you

Sergiusz

Advice on the use of the oracle.apps.aia.core.eh.i18n.EHCorrectiveActionRB
Hello

I'm trying to implement the AIA error handling and reading that AIA provides xpath functions to retrieve the error code messages and corrective action messages. the documentation says that you must use the oracle.apps.aia.core.eh.i18n.EHCorrectiveActionRB listresourcebundle class to do this.

My questions are:

1. this oracle.apps.aia.core.eh.i18n.EHCorrectiveActionRB of the class already exists within the AIA in order to add the new error etc... you just need to change?
2. If the above is true then where can I find this class to add new messages?
3 this Listresource bundle must be implemented in all composite samples of AIA? If yes how can I do this?
3. does anyone have examples that I can use to implement the management of errors?
4. all other general advice on the use of this list of resources group

Thank you for your help in advance.

Kind regards.
Adrian
1. this oracle.apps.aia.core.eh.i18n.EHCorrectiveActionRB of the class already exists within the AIA in order to add the new error etc... you just need to change?
Yes, they exist oob with FP. In 10g, it will be under system/classes/bpel file.
2. If the above is true then where can I find this class to add new messages?
In 10g, it will be under system/classes/bpel file. 11 g, it will be under /soa/modules/oracle.soa.ext_11.1.1/classes folder.
3 this Listresource bundle must be implemented in all composite samples of AIA? If yes how can I do this?
No, the bundle is a single resource, and you can add your messages in the same class.
3. does anyone have examples that I can use to implement the management of errors?
Please see available in OTN download AIADemo. All composite materials have the error handling.
4. all other general advice on the use of this list of resources group
11 g class of resource bundles is replaced by a file of text properties.

The CPU used by the resource manager.
Hello
in 10g R2, I created a Plan for DBMS resources manager:
```
EXEC DBMS_RESOURCE_MANAGER.CREATE_PENDING_AREA();

EXEC DBMS_RESOURCE_MANAGER.CREATE_SIMPLE_PLAN(SIMPLE_PLAN => 'simple_plan1',CONSUMER_GROUP1 => 'mygroup1', GROUP1_CPU => 80,CONSUMER_GROUP2 => 'mygroup2', GROUP2_CPU => 20);


ALTER SYSTEM SET RESOURCE_MANAGER_PLAN ='simple_plan1';



EXEC DBMS_RESOURCE_MANAGER.SWITCH_CONSUMER_GROUP_FOR_USER ('SCOTT', 'MYGROUP2');
EXEC DBMS_RESOURCE_MANAGER_PRIVS.GRANT_SWITCH_CONSUMER_GROUP ('SCOTT', 'MYGROUP2', TRUE);


EXEC DBMS_RESOURCE_MANAGER.SUBMIT_PENDING_AREA;

EXEC DBMS_RESOURCE_MANAGER.CLEAR_PENDING_AREA;
```
Now, SCOTT runs the following (example from 24 through the database manager):
```
DECLARE
m NUMBER;
BEGIN
FOR i IN 1..100000 LOOP
FOR j IN 1..100000 LOOP
/*
* The following query does a cartesian product without
* a predicate and takes up significant CPU time.
*/
select count(*) into m from v$sysstat, v$system_event;
END LOOP;
END LOOP;
END;
END;
/
```
And CPU use goes to 100%. Why? According to its consumer group should not only have 20% of CPU?

No explanation?
Thank you.
Hello

user522961 wrote:
And CPU use goes to 100%. Why? According to its consumer group should not only have 20% of CPU?

A quote from docs explained:

The currently active resource plan does not have the limits of the allowance until the CPU usage is 100%. If the CPU usage is less than 100%, the database is not related to the CPU and there is therefore no need to enforce limits to ensure that all the sessions to get their allocation of designated resources.
In addition, when the limits are applied, allowance unused by consumer groups can be used by other groups of consumers. In the previous example, if the SALES group does not use all of his allowance, the Resource Manager allows the group to MARKET or DEVELOP it group to use the unused allocation.

CPU used by the session events

I have a table of 88 MB not including no clue to this topic.

select count(*) from ( select * from tbl where flag1=:1 and flag2=:2 and flag3=:3)

The sql above is at the top of the page processor consuming session while I interrogate 'cpu used by session event.

How does top different query of: -.

select count(*) from tbl where flag1=:1 and flag2=:2 and flag3=:3)

version is 10.2.0.2

When tried to see the plan to explain to the two sql
It's showing the same plan.

@? / RDM/admin/utlxpls

Watch full table scan
and with the cpu cost message is not configured/displayed

Please help me understand what
What query is better and why?
explain why the plan does not show the cost of CPU?

SQL> explain plan for
  2  select count(*) from (select * from t1)
  3  /

Explained.

SQL> select * from table(dbms_xplan.display);

PLAN_TABLE_OUTPUT
-------------------------------------------------------------------------
------------------------------------
Plan hash value: 3724264953

-------------------------------------------------------------------
| Id  | Operation          | Name | Rows  | Cost (%CPU)| Time     |
-------------------------------------------------------------------
|   0 | SELECT STATEMENT   |      |     1 |     3   (0)| 00:00:01 |
|   1 |  SORT AGGREGATE    |      |     1 |            |          |
|   2 |   TABLE ACCESS FULL| T1   |   301 |     3   (0)| 00:00:01 |
-------------------------------------------------------------------

9 rows selected.

SQL> explain plan for
  2  select count(*) from t1;

Explained.

SQL> select * from table(dbms_xplan.display);

PLAN_TABLE_OUTPUT
-------------------------------------------------------------------------
------------------------------------
Plan hash value: 3724264953

-------------------------------------------------------------------
| Id  | Operation          | Name | Rows  | Cost (%CPU)| Time     |
-------------------------------------------------------------------
|   0 | SELECT STATEMENT   |      |     1 |     3   (0)| 00:00:01 |
|   1 |  SORT AGGREGATE    |      |     1 |            |          |
|   2 |   TABLE ACCESS FULL| T1   |   301 |     3   (0)| 00:00:01 |
-------------------------------------------------------------------

9 rows selected.

SQL> explain plan for
  2  select count(*) from (select * from t1)
  3  /

Explained.

SQL> @?/rdbms/admin/utlxpls

PLAN_TABLE_OUTPUT
-------------------------------------------------------------------------
------------------------------------
Plan hash value: 3724264953

-------------------------------------------------------------------
| Id  | Operation          | Name | Rows  | Cost (%CPU)| Time     |
-------------------------------------------------------------------
|   0 | SELECT STATEMENT   |      |     1 |     3   (0)| 00:00:01 |
|   1 |  SORT AGGREGATE    |      |     1 |            |          |
|   2 |   TABLE ACCESS FULL| T1   |   301 |     3   (0)| 00:00:01 |
-------------------------------------------------------------------

9 rows selected.

SQL>

I see the same execution Plan.

Published by: Hemant K grapple on 23 July 2009 23:34

Looking for Oracle Support Doc that explains + and * conventions used in the Oracle certifications.

Hi all
A few months back I saw a (link to an oracle doc) post in the forums of essbase explaining the conventions used by oracle and what they mean when they say that a platform supports the "Software.1. * ' as opposed to '+ Software.1'. I tried Googling for the doc and after an hour of search and do not find that he decided to publish it. I'm sure that the link to this doc has been published by TimG or GlennS_3 or JohnGoodwin. (Sorry for the tags). If anyone knows what talk and relate to this doc, I would appreciate if you can share it and I promise you to save this time. ... Help, please...
Thank you
Ted.

Hi Ted, yes - it's here: https://blogs.oracle.com/proactivesupportEPM/entry/how_to_read_product_versions

I highly recommend you subscribe to the RSS feed of the blog proactive Support.

Transfer technology used in the Oracle's SQL LKM.
I used LKM SQL to Oracle as LKM in my interfaces. My query is how data from the source database objects are loaded into the table of C$ created in the target database, even if no DB link is created. What is the technology of data transfer used in this LKM. I have checked the codes of the operator, but did not find anything to answer my question.
Hello

'S done it through Java (the agent).

Take a look at this post that explain how... http://odiexperts.com/?p=742

He answered your question?

Cezar Santos
http://odiexperts.com

Research used in the Oracle Cache space
Is it possible to find the size of the cache buffer used to run a particular query. I want it in bytes/blocks accurate. I have doesnot mean the maximum buffer cache, but the used buffer cache?
Salvation;

What is the version of db?

Please find below the thread that could give you some tip you

using the buffer cache
Using the buffer Cache

Respect of
HELIOS

How to monitor CPU uses by our application, using the programming of RIM?

Hi all

I want to know how our application uses the CPU in the programming of the RIM, if someone know how to listen to the CPU use of the native, it will be great for me to do more than build quality.

Hopefully I'll get response soon from all experts.

Thank you for tip

-Marie

As @BBSJdev suggested, it is a question for the NDK, not BBW forum forum.

How the line prefetch impact using memeory on oracle.
Support, we have a table whose structure is like (a varchar2 (4000), b varchar2 (4000), b varchar2 (4000), b varchar2 (4000)). If we fill the with row table of maximum length, i.e.: all ranks will be have4 * 4 k = 16 k data. Then set line prefetch (in sqlplus, arraysize) 5K, then for each extraction, oracle will send 16 K * 5 K = 80 M data to the client. My question is: whence these 80 M stored in oracle?

I first thought these 80 m will get PGA/UGA, but my tests show me the UGA and PGA are less than 5 M, that size is not enough to store the data of 80 M. Oracle will store the data in the buffer of the decision-making level operating system once all the data is ready? Such as: get 15 K data, put it in the socket buffer, get the data from 15 K one another, put it in the socket buffer, so there is no need for oracle store these 80 M within the oracle database? But 80 M data is too large for the buffer of the socket.
user646745 wrote:
My question is if the customer will use super great memory if set prefetch too high. The trace file said oracle is occupied on sending data of 5000 lines without interruption. If the customer must have little need of memory to store. My perl above test has confirmed that it takes a lot of memory to the high setting prefetch.

Yes. It depends on how the OCI (Oracle Call Interface) is used. The [Oracle® Call Interface Programmer Guide | http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14250/oci04sql.htm#sthref645] States:

>
In order to minimize the server back and forth and optimise performance, the SPOUT can preload lines of result set when executing a query. You can customize this prefetching by setting an OCI_ATTR_PREFETCH_ROWS or OCI_ATTR_PREFETCH_MEMORY of the statement handle attribute using the OCIAttrSet() function. These attributes are used as follows:

* OCI_ATTR_PREFETCH_ROWS sets the number of lines to be read beforehand. If it is not set, the default value is 1. If the OCIStmtExecute() iters parameter is 0 and prefetching is enabled, lines are buffered during calls to OCIStmtFetch2(). The value of read-ahead can be changed after the execution, as well as between extractions.

* OCI_ATTR_PREFETCH_MEMORY sets the allocated memory to be a prior extraction lines. The application then retrieves lines as much as can fit in this amount of memory.

When both of these attributes are specified, the Prerecupere BEAK of the lines up to the OCI_ATTR_PREFETCH_ROWS limit, unless the limit OCI_ATTR_PREFETCH_MEMORY is reached, in which case the NOZZLE return so many rows than fit in a buffer of size OCI_ATTR_PREFETCH_MEMORY.

By default, the preload is turned on, and the SPOUT recovers an additional line all the time. To enable disable prefetching, define the attributes of the OCI_ATTR_PREFETCH_ROWS and the OCI_ATTR_PREFETCH_MEMORY to zero.
>

Therefore, if either prefetch value is high. client memory use will also increase at the same time. The '+' safer + two methods would be to OCI_ATTR_PREFETCH_MEMORY the value that you specify then a size of buffer extraction absolute memory... whereas the use of OCI_ATTR_PREFETCH_ROWS can cause a heavy memory hit to extract lines very large and in turn use very little memory when you read the small lines.

Oracle process manager
Hello

Can someone let me know what is the Importance of the Oracle Process Manager in 11.1.2.1. Y at - it any dependency to start this service.

Published by: Don'tKnow999 on March 18, 2012 06:54
OPMN is used to control and monitor the process and in the world of PMC is used with essbase and Oracle HTTP server.

See you soon

John
http://John-Goodwin.blogspot.com/

Need help to understand the oracle plsql design phase.
I am new user oracle plsql for learning. I wanted to know the following points.

(1) is there any process that we follow before developing procedures for oracle.
(2) is there any algorithm, flowchart, diagrams that we use for the Oracle procedure development.
(3) what I should learn in order to begin to develop procedures for the oracle.

organization charts
data flow diagrams

There any standard used in industry? comments or pointers would be useful
user507531 wrote:

Meanwhile, I would also like to know if there are any designs / charts, high level design, low level of design, ER diagrams to create before you start any development of Oracle plsql.

It depends on the environment, work in and value standards. Some expect a case of use (UML) before a single line of code is written. At the time of Cobol, an organizational chart was generally expected.

With some new programming approaches, the test cases are often used to define the program (as in turn, which defines the objectives of the program).

ERDs come with database design - with the design of the PL/SQL program. You can use an ERD for a PL/SQL program, but is not part of the design of a PL/SQL program. It describes the database instead.

Inventory of the Oracle
Hello friends,
I am newbie in oracle stock. I want to know that what are the tables & API used by the oracle inventory.
I need basic steps. Please help me
Look at irep.oracle.com for the APIs available (in the discrete manufacturing section)
Look at etrm.oracle.com for all the table structures.

However, a word of advice. The document on the sites above are NOT really intended for read-to-cover. You should refer to them as and when you need it for a specific problem / task.

Hope this helps,
Sandeep Gandhi

How to correctly get the percentage of CPU being used by the process

I try to get the % CPU used by process under windows with Qt/C++. First to get a list of running processes and after that, for each process, I try to get the CPU used, for most of the processes that the result seems valid (they correspond with the windows Task Manager), but with the process of AIDA64 (running a CPU in the background stress test), I got strange as 312% values what is the problem with my code c ++?

    sigar_t *sigarproclist;

    sigar_proc_list_t proclist;

    sigar_open(&sigarproclist);

    sigar_proc_list_get(sigarproclist, &proclist);

    for (size_t i = 0; i < proclist.number; i++)

        sigar_proc_cpu_t cpu;

        int status1 = sigar_proc_cpu_get(sigarproclist, proclist.data[i], &cpu);

        if (status1 == SIGAR_OK)

            Sleep(50);

            int status2 = sigar_proc_cpu_get(sigarproclist, proclist.data[i], &cpu);

            if (status2 == SIGAR_OK)

                sigar_proc_state_t procstate;

                sigar_proc_state_get(sigarproclist, proclist.data[i], &procstate);

                qDebug() << procstate.name << cpu.percent * 100 << "%";

    sigar_close(sigarproclist);

You may need to scale (divide) by the number of cores. This is the sigar code uses on windows to deliver the cpu process:

SIGAR_DECLARE(int) sigar_proc_time_get(sigar_t *sigar, sigar_pid_t pid,
                                       sigar_proc_time_t *proctime)
{
    HANDLE proc = open_process(pid);
    FILETIME start_time, exit_time, system_time, user_time;
    int status = ERROR_SUCCESS;

    if (!proc) {
        return GetLastError();
    }

    if (!GetProcessTimes(proc,
                         &start_time, &exit_time,
                         &system_time, &user_time))
    {
        status = GetLastError();
    }

    CloseHandle(proc);

    if (status != ERROR_SUCCESS) {
        return status;
    }

    if (start_time.dwHighDateTime) {
        proctime->start_time =
            sigar_FileTimeToTime(&start_time) / 1000;
    }
    else {
        proctime->start_time = 0;
    }

    proctime->user = FILETIME2MSEC(user_time);
    proctime->sys  = FILETIME2MSEC(system_time);
    proctime->total = proctime->user + proctime->sys;

    return SIGAR_OK;
}

The doc of api windows indicates the time here is a sum on all threads and must therefore be reduced by the number of cores.

We had something like this in our use of links Java the 1.6.4 release of SIGAR. I'm curious to know if it works for you.

Best,

Vishal

CPU used by the oracle process

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