Reg: ETG with parallelism-

Hi Experts,

Of the scripts below, the last of them with the parallelism at the level of the tables, the DEGREE of USER_TABLES column becomes 4, and each query is executed with the implicit parallelism.

What is the way to change the DOP to 1 back again?

create table t1

as

Select col1 level 'aaa' col2, sysdate + level double col3 connect by level < = 100;

create table t2

as

Select / * + parallel (4) * / col1, col2 'aaa' level, sysdate + level col3 from dual connect by level < = 100;

create table t3

parallel (level 4)

as

Select / * + parallel (4) * / col1, col2 'aaa' level, sysdate + level col3 from dual connect by level < = 100;

Thank you and best regards,

-Nordine

(on Oracle 10.2.0.1.0)

ALTER TABLE PARALLEL 1

SQL> create table emp_temp parallel 5
  2  as
  3  select * from emp;

Table created.

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

PLAN_TABLE_OUTPUT
-------------------------------------------------------------------------------------------------------------------------
SQL_ID  1j21g59116rxv, child number 1
-------------------------------------
create table emp_temp parallel 5 as select * from emp
Plan hash value: 91796457
----------------------------------------------------------------------------------------------------------------
| Id  | Operation              | Name     | Rows  | Bytes | Cost (%CPU)| Time     |    TQ  |IN-OUT| PQ Distrib |
----------------------------------------------------------------------------------------------------------------
|   0 | CREATE TABLE STATEMENT |          |       |       |     2 (100)|          |        |      |         |
|   1 |  PX COORDINATOR        |          |       |       |            |          |        |      |         |
|   2 |   PX SEND QC (RANDOM)  | :TQ10000 |    11 |   429 |     2   (0)| 00:00:01 |  Q1,00 | P->S | QC (RAND)  |
|   3 |    LOAD AS SELECT      |          |       |       |            |          |  Q1,00 | PCWP |         |
|   4 |     PX BLOCK ITERATOR  |          |    11 |   429 |     2   (0)| 00:00:01 |  Q1,00 | PCWC |         |
|*  5 |      TABLE ACCESS FULL | EMP      |    11 |   429 |     2   (0)| 00:00:01 |  Q1,00 | PCWP |         |
----------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
   5 - access(:Z>=:Z AND :Z<=:Z)

22 rows selected.

SQL> select degree from user_tables where table_name = 'EMP_TEMP';

DEGREE
----------
         5

SQL> alter table emp_temp parallel 1;

Table altered.

SQL> select degree from user_tables where table_name = 'EMP_TEMP';

DEGREE
----------
         1

SQL>

Tags: Database

Similar Questions

  • Means PtbyPt in a loop with parallelism

    Hello

    Can someone explain to me why this does not work as expected? (values 10.5 and 0.5)

    I got 5.5 and 5.5.

    I checked the MeanPtbyPt.vi, everything is cloned, the vi himself is set to pre-allocate clones. I also tried to "Inline", does not help. I tried C of 1 and 2, no luck. If I open ptbypt average during operation, I see that the SR holding the data table is interlaced with 10.5 values and 0.5, as if the two clones use the same space memoty, but on the entrance, I still see only ~0.5 coming. What gives? I thought parallelism will create two clones, no?

    Fomine wrote:

    Hello guys,.

    Thank you very much for your answers!

    The problem with the 2 ptbypts on the block diagram, it is that I have a table of measurements independent of N, where N is large and variable.

    Why a loop with parallelism does not clones? This significantly decreases its value then. I have to rewrite mathematical libraries AND then

    In fact, a loop with the parallelism (or without) CAN create clones.  But he must know the trick.

    Here is an example of what you "really want".

  • PNG BMP 2 with parallelism

    Hello guys.
    I have a bmp to png converter. I need parallel to it.
    COS I need to convert 50 photos in a little time as possible.
    This my VI, does not work with parallel. COS icons are locked and etc.
    Have u any idea, how to proceed?

    Hi lacika,.

    See my last post: comment on another approach!

    With a producer-consumer-plan your test sequence must wait for the end of the conversion!

  • Receiving a message to activate Windows 7 online. Tried this and it will not activate. Windows 7 on your MAC with Parallels.

    Activating Windows 7

    I BOUGHT WINDOWS 7 WITH PARALLELS DESKTOP 5.  IT IS INSTALLED AND WORKING FINE EXCEPT THAT I GET A MESSAGE TO ACTIVATE ONLINE.  I TRIED TO DO AND IT WON'T LET ME ACTIVATE.  I CHECKED THE KEY TO PRODUCT AT LEAST 10 TIMES AND IT IS CORRECT.  I'M DOING SOMETHING WRONG?

    Case of failure of the online activation:

    Call Microsoft use the manual phone Activation

    Note: If you always install Windows page enter your product key, do not enter your key and uncheck the "Automatically activate when online" then click OK/next to complete the installation.

    If you have trouble activating Windows 7 you can call Microsoft to activate it by following the steps below.

    1. with the operation of Windows, click Start, then in the search box type: slui.exe 4

    2. press enter on your keyboard

    3. Select your country.

    4. Select the telephone activation option, dial the given number and hold for a person pick up.

    For more details:

    http://www.SevenForums.com/tutorials/18715-activate-Windows-7-phone.html

    If you are still unable to activate:

    (1) download and run the Microsoft Genuine Diagnostics tool:

    http://go.Microsoft.com/fwlink/?LinkId=52012

    (2) then copy and paste your analysis results.

    Questions about installing Windows 7?
    FAQ - Frequently Asked Questions from Installation Windows 7 & responses

  • Try to install EQ7 on iMac with Parallels and Windows 7

    Have iMac with Parallels and Windows 7. Try to install EQ7 (windows only program). Get the message "Error reading setup initialization file." How can I install this program?

    See the developers website for compatibility with Windows 7 and if there are updates, corrections or difficulties that might ensure compatibility.

    Windows 7 Compatibility Center

    Check if your application software or hardware is on the list

    http://www.Microsoft.com/Windows/compatibility/Windows-7/en-us/default.aspx

    Software:

    http://www.Microsoft.com/Windows/compatibility/Windows-7/en-us/default.aspx?type=software

    You can also try to run the program in compatibility mode

    You can find more information on compatibility modes in the articles below:

    http://Windows.Microsoft.com/en-us/Windows7/what-is-program-compatibility

    http://Windows.Microsoft.com/en-us/Windows7/make-older-programs-run-in-this-version-of-Windows

    http://Windows.Microsoft.com/en-us/Windows7/Program-Compatibility-Assistant-frequently-asked-question

  • Reinstall Windows 7 with Parallels

    I am running Windows 7 with Parallels on an iMac. I am asked to reset my password, but I did not have (or remember) my password. I have not created a password reset disk, so I have to reinstall Windows. I have the discs and the product key to do so. The problem is, when I insert the Windows disc and try to run the program installation or auto run, it tries to start Windows and push me to reset the password. How to uninstall Windows on this iMac and then reinstall it. (I tried to reinstall Parallels, but ended up in the same-loop).

    In fact, I have not. I am using Parallels support, who told me to ignore the reset password dialog box, leave all the fields blank and just click "continue". In other words, I have no password and does not require one. It has worked well. Sorry for my confusion on something so simple. (I'm still new with the Mac).

  • How to install "Age Of Mythology" on windows 7 using a MAC with Parallels software.

    I have a version of the game "Age Of Mythology" originally for XP. I'm owner is no longer a PC but I use a MAC with Parallels 7 to run Windows 7.

    I put the drive on the windows desktop, but I don't know how to install this game and do run. Someone please help!

    How to install Age of Mythology | eHow.com

    also:

    INSTALL AGE OF MYTHOLOGY - YouTube

  • Reg: Error in parallel Hint-

    Hi Experts,

    I have a concern about the use of the parallel hint with DOP = 'AUTO '.

    These errors during the ETL or tasks are performed with / * + PARALLEL (AUTO) * /.

    JOB - 1
    java.sql.SQLException: ORA-12853: insufficient memory for buffers PX: run 1159024K, max necessary K 11666304

    ORA-04031: unable to allocate 65560 bytes of shared memory ('pool', 'unknown object', 'pool', 'Pool of msg PX')


    JOB - 2

    java.sql.SQLException: ORA-12801: error reported in the P256 parallel query server
    ORA-12853: insufficient memory for buffers PX: run 1159024K, max necessary K 11666304
    ORA-04031: unable to allocate 65560 bytes of shared memory ('pool', 'unknown object', 'pool', 'Pool of msg PX')

    I tried google, but could not get a pattern appropriate for that and also correct.

    1-do I need to increase the bound parameter buffer?

    2 - is this 'AUTO' option the cause? And using a DOP = 3, 4, etc. guaranteed to solve this problem?

    (I try this and check but want to know the exact reason, so that it causes no problems in Prod)

    Guidance in this regard.

    -Nordine

    ( on Oracle 11.2.0.3.0 )

    nordine B wrote:

    Before going deep into your words, had a quick question - despite having DOP as 'auto' in the suspicion, why is there an error on the buffers PX?

    I was under the assumption that DOP setting on "automatic", the optimizer will take care of all resources and allocate the CPU threads accordingly. But then why this error is growing?

    First, I already mentioned in my reply what treat buffers "PX": this is the memory that is required for communication between the servers in PX. Parallel execution comes with the need for a communication between the involved process layer and this layer of communication requires memory for exchanging data (and could even cross the interconnection for CARS cross the parallel execution of the instance). If you want to know more about it, you can watch my Webinar: http://allthingsoracle.com/analyzing-and-troubleshooting-oracle-parallel-execution/

    So does not AUTO magic DOP, it is mainly about the following:

    -L' optimizer uses a new method of calculation to arrive at a particular degree of parallelism (DOP). The basics, how is the calculation I have described in my post 'Cost Is Time' mentioned in my previous answer. Since this calculation is based on the estimated costs of the optimizer, it can happen to little all - adapted DOP, or may be a completely inappropriate DOP if the calculation of the underlying costs did not reflect the actual amount of work, or if the calibration i/o returned to the unreasonable values.

    -In addition to this AUTO DOP code still uses other settings / settings / thresholds which can be used to control / limit the calculated value.

    * The PARALLEL_MIN_TIME_THRESHOLD parameter can be used to control which * estimated time * must be exceeded before the parallel execution gets seen by AUTO DOP. Note also that it is based on estimates and therefore underlies the same problems as described above

    * The PARALLEL_DEGREE_LIMIT can be used at the upper limit of the degree of "cap".

    Currently Manager of used consumer resource group data can impose a different ceiling and will be considered in the calculation, too

    -The PARALLEL_SERVERS_TARGET parameter can be used to control the simultaneous execution of running in parallel, resulting in a queue of executions if the threshold is exceeded

    -The calibration of i/o resources provides an important factor which is the main engine for the calculation of the DOP

    -Resource Manager can be used to implement fairly complex scenarios with different queues and the different settings by Consumer Group

    So you can see there are some elements in AUTO DOP that may consider the consumption of resources, especially things of queues and advanced resource manager configurations, but stuff 'Pads PX' does not part of the calculation.

    If you want to learn more about these settings and interaction with the resource manager, follow the links on the page "webinar" above - that it points to several very good articles published on the Oracle 'Data Warehouse' blog, a highly recommended resource if you regularly deal with a running in parallel.

    Randolf

  • AutoConfig with parallel option introduced in what version of R12?

    Hi all

    Could someone please share on the topic:

    AutoConfig with parallel option introduced in what version of R12?


    On further research, please note the following, which has been highlighted in EBS 12.1.x news as well:

    1. automatic configuration with parallel option in 12.1.1

    A. the link below so points out:

    http://docs.Oracle.com/CD/E18727_01/ doc.121 /e12841/T120505T120514.htm

    AutoConfig running in parallel

    Introduced in version 12.1, the parallel mode allows to AutoConfig to simultaneously run multiple nodes of a system of Oracle E-Business Suite. When running in parallel mode, AutoConfig uses the dbms_locks PL/SQL package to ensure that the configuration of a node does not interfere with the configuration of other nodes: this is necessary because some automatic configuration of a node service configurations depend on the configuration of the other nodes.

    B.R12.1 has the interesting feature that you can run the automatic configuration in parallel in the environment of multi node. Exit R12.1 content CD contains this information.
    https://MetaLink.Oracle.com/MetaLink/PLSQL/docs/EBS_R12.1_RCD_ATG_PreRelease.PDF

    It is to raise awareness among the Group of the same points mentioned in versions 12.0.4,12.0.6 and 12.1.1 about-> AutoConfig running in parallel

    The above points are contradictory in nature so!

    Could someone please clarify!

    Thank you and best regards,

    Salvation;

    As you mention is not so clear.

    I found this:
    http://onlineappsdba.com/index.php/2010/04/15/reduce-AutoConfig-downtime-parallel-run-Profiler/

    You always dupt its best to confirm this information with the companion of support. Please increase sr

    Respect of
    HELIOS

  • Deleting huge records with parallel option in a non-partitioned table

    Hi all

    Is it possible to run delete statement with sub query that removes millions of records in a table that is not partitioned with parallel option?

    SQL > Alter session enable parallel query.

    SQL > Alter session enable parallel dml.

    SQL > alter table table_A parallel 5;

    SQL > delete the table_A where colA = "zzzz";

    SQL > commit;

    SQL > alter table table_A noparallel;

    Please advice,

    Thanks in advance.

    user7280060 wrote:
    Hi all

    Is it possible to run delete statement with sub query that removes millions of records in a table that is not partitioned with parallel option?

    SQL > Alter session enable parallel query.

    SQL > Alter session enable parallel dml.

    SQL > alter table table_A parallel 5;

    SQL > delete the table_A where colA = "zzzz";

    SQL > commit;

    SQL > alter table table_A noparallel;

    Please advice,

    Thanks in advance.

    Yes

  • With parallel option swap partition

    Hi all

    I do a swap with parallel option partition, but his giving is not not an option valid.

    ALTER TABLE table_1
    P_name SWAP PARTITION
    WITH TABLE table_2
    WITHOUT VALIDATION
    PARALLEL (level 12);

    ERROR on line 5:
    ORA-14094: invalid ALTER TABLE EXCHANGE PARTITION option

    Please advice.

    Thank you and best regards,
    Rakesh

    Published by: user12003321 on March 5, 2010 17:43

    This means that we cannot run with parallel option swap partition when we do not include the index of update?

    FIX!

    cannot use PARALLEL with EXCHANGE

  • is - this el capitan IO works with parallels 8 and windows 7?

    I'm running IO 10.8.5 on my MacBook Pro and also have 8 parallels to run windows 7, will El Capitan IO work well with my set up? don't want to stop using Windows 7 on my machine

    Thank you

    Parallels has warned many users of its virtualization software Parallels Desktop for OS X version 8 is not compatible with the next OS X 10.11 El Capitan.

    Windows 7 will migrate in work on El Capitan w / Parallels

  • Error with parallel while loops

    Hello

    I need to connect 6 different instruments gpib. I am using parallel loops, but the problem is when I try to open 2 or 3 Subvi simultaneously (the intstrument drivers), I just open one because of everything in a loop to run the Subvi. The program should be able to open all the Sub - VI independently.

    Can give you some ideas?

    Thank you

    A. Castillo

    Look at the detailed help for functions to notify.  Then follow the links to the examples included with LV

    Another problem that you have, whether you use your curls greedy or reporting or another technique, is to know how to stop your hand while loop.  All the subVIs must be called before the loop stops.  This is the fundamental paradigm of LV

    You will probably need to rethink your primary architecture to something that will actually do what you want.  Plan and design before your departure from the coding.  Note requirements for the program and determine which parts are dependent on othrer parts, then select a program architecture that can meet the requirements.

    Lynn

  • Application crashes with parallel loops

    I developed an application that controls a digital fluorometer using a C++ DLL (provided by the seller) via a USB connection. I created specifically as QMH architecture because long scans on the fluorometer may take a few seconds and I want the user to be able to control the façade while the equipment is running in parallel. For some reason any, when the loop of material control is bound to its analysis, the façade hangs. If I click anywhere in the window, I get the «...» "" Message do not answer ' in the toolbar until the scan is finished. " While this happens, memory and processor remain substantially the same so I do not think he is tied up system resources. In addition, Windows normally responds.

    I think the DLL is called to a level that affects all vi and when the call of the DLL will be made, each process LabVIEW gets put on hold. I'm leaving basic with this assumption? If this is not the case, how could one breach of this situation?

    Yes - your problem is with the loop of wire/root LabVIEW UI. There is a very good article about it here.

    Your call library function node is set to 'Run' in the UI thread which means that it will be executed in the same thread as stock user interface or anything else that requires that the user interface thread. In other words, no other action of the user interface can occur when your C++ DLL function runs - it blocks the thread to continue.

    You need to know if the DLL is thread-safe, and if this is the case, change the method of appeal of the C++ DLL in the call library function node to 'run in any thread '.

    You can make a difference in the color of the COLD LAKE:

  • HP DeskJet 400 with parallel/USB adapter and Ubuntu doesn't print correctly

    as in the topic, then print at the start of the printer green LEDs start flashing when it start to print:

    -Sometimes, the printer turns off

    -Sometimes, the printer starts to print, but at some point, it seems random, he stops and turns off

    -rarely printing is completed successfully.

    Anyone experienced this?

    The parallel/usb converter worked correctly with windows for 2-3 years.

    Thanks to all who can help me.

    Hi ottavop,

    You will need to go the link below to get assistance for your operating system to Linux/Ubuntu.

    http://hplipopensource.com/hplip-Web/support.html

Maybe you are looking for