How to capture the execution plan for a query

Hi all

Can someone help me please to find the command to capture the execution plan for a query.

Execution plan for select * from EMP where < condition >

Is getting executed successfully, but I need to get the appropriate for the same execution plan.

Thank you

Read the Doc

Tags: Database

Similar Questions

  • How to change the execution plan

    I've simplified queries in order to clarify the issue.
    The Boolean condition (true or false) is a criterion which has been initialized or not.
    In one case, if it is true, I want to get all the ID of the table.
    If not, I want to get only the corresponding line (pk_id = 1)

    Select pk_id
    s table
    where (1 = 0) or EXISTS (select 1 from table ss where ss.pk_id = s.pk_id and ss.pk_id = 1);

    In my case, a comprehensive analysis that's happened in any case. (TRUE or FALSE)

    If I remove the Boolean condition, oracle optimizer transforms the query and it uses a single INDEX scan.
    Select pk_id
    s table
    where EXISTS (select 1 from table ss where ss.pk_id = s.pk_id and ss.pk_id = 1);

    I have performed this request in other databases, but it works well on my system.

    Hello

    If's table' and 'table ss' are the same, see another answer. If they are different (which I assume), then the query reads:

    retrieve all PK_IDs from mytable if the constant condition is true, or recover the only one with a value of 1 if it exists in the table mytable AND if there is also in the other myothertable of the table.

    Then I would move the condition pk_id = 1 outside EXISTS (and I put it also on the inside to make the life of the optimizer):

    SELECT pk_id

    S MYTABLE

    WHERE 1 = 0

    OR s.pk_id = 1

    AND EXISTS (SELECT NULL

    OF myothertable ss

    WHERE ss.pk_id = 1

    )

    ;

    Note: 'AND' is evaluated before 'OR' as ' * ' is evaluated before '+', so no parentheses not necessary: has or b AND c equals an OR (b AND c) operation as a + b * c means a + (b * c).

    Best regards

    Bruno Vroman.

  • How to get the elapsed time for a query in 9i non-select only?

    Fact is that I cannot change the setting cannot be enabled SQL_TRACE, so I wonder if it is there anyway, or anywhere where I can find the time spent on this sql?
    Gather_plan_statistics trick works not because statistics_level = Basic, 9i.

    So any ideas?

    Thank you very much!

    Hello

    You can use

    SET TIMING ON;
    
       your code
    
    SET TIMING OFF;
    

    Thank you
    Ankur

  • Should I wait until the end of the execution time of the query for the execution plan?

    Hello Experts,

    I want to see the execution plan of the query below. However, it takes more than 3 hours. Should I wait all the time to see the execution plan?

    Note: EXPLAIN PLAN for does not work. (I mean that I do not see the actual line number, etc. with EXPLAIN the PLAN of market)

    You can see the output of the execution plan when I canceled the execution after 1 minute.

    My first question is: what should I do to see the execution plan for queries running out of time time?

    2nd question: when I cancel the query during execution in order to see the execution plan, will I see the specific plan of execution or erroneous values? Because the first execution plan seems inaccurate, what do you think?

    question 3: why EXPLAIN the PLAN for the clause does not work? Also, should I use EXPLAIN the PLAN of the clause to this scenerio? Can I see the result of running for long time without her queries?

    Thnaks for your help.

    Oracle Database 11 g Enterprise Edition Release 11.2.0.2.0 - 64 bit Production

    PL/SQL Release 11.2.0.2.0 - Production

    CORE Production 11.2.0.2.0

    AMT for Linux: Version 11.2.0.2.0 - Production

    NLSRTL Version 11.2.0.2.0 - Production

    Select / * + GATHER_PLAN_STATISTICS NO_PARALLEL * / J.INVOICEACCOUNT, J.INVOICEID, J.INVOICEDATE, (T.LINEAMOUNT + T.LINEAMOUNTTAX) price

    of custinvoicejour j join custinvoicetrans t on

    substr (nls_lower (j.DataAreaId), 1, 7) = substr (nls_lower (t.dataareaid), 1, 7) and

    substr (nls_lower (J.INVOICEID), 1: 25) = substr (nls_lower (t.INVOICEID), 1: 25)

    where

    substr (nls_lower (T.DATAAREAID), 1, 7) = '201' and T.AVBROCHURELINENUM = 29457

    and substr (nls_lower (j.dataareaid), 1, 7) = '201' and

    J.INVOICEACCOUNT in

    (select IT. Drmpos.avtr_seg_cust_campend ACCOUNTNUM this where THIS. CAMPAIGN = '201406' and THIS. SEGMENT_LEVEL in (', 'E'))

    and J.AVAWARDSALES > 190

    and substr (nls_lower (J.AVBILLINGCAMPAIGN), 1, 13) = '201406'

    "and J.INVOICEDATE between ' 04.06.2014' and ' 13.06.2014 ';

    SQL_ID, dznya6x7st0t8, number of children 0

    -------------------------------------

    Select / * + GATHER_PLAN_STATISTICS NO_PARALLEL * / J.INVOICEACCOUNT,.

    J.INVOICEID, J.INVOICEDATE, (T.LINEAMOUNT + T.LINEAMOUNTTAX) price of

    CustInvoiceJour j join custinvoicetrans t on

    substr (nls_lower (j.DataAreaId), 1, 7) =

    substr (nls_lower (t.DataAreaId), 1, 7) and

    = substr (nls_lower (J.INVOICEID), 1: 25)

    substr (nls_lower (t.INVOICEID), 1: 25) where

    substr (nls_lower (T.DATAAREAID), 1, 7) = '201' and T.AVBROCHURELINENUM =

    29457 and substr (nls_lower, (j.dataareaid), 1, 7) = '201' and

    J.INVOICEACCOUNT in (select CE. ACCOUNTNUM of

    drmpos.avtr_seg_cust_campend this where THIS. CAMPAIGN = '201406' and

    IT. SEGMENT_LEVEL in (', 'E')) and J.AVAWARDSALES > 190 and

    substr (nls_lower (J.AVBILLINGCAMPAIGN), 1, 13) = '201406' and

    "J.INVOICEDATE between ' 04.06.2014' and ' 13.06.2014 '.

    Hash value of plan: 2002317666

    --------------------------------------------------------------------------------------------------------------------------------------------------------------

    | ID | Operation | Name                           | Begins | E - lines. A - lines.   A - time | Pads | Bed |  OMem |  1Mem | Used Mem.

    --------------------------------------------------------------------------------------------------------------------------------------------------------------

    |   0 | SELECT STATEMENT |                                |      1.        |      0 | 00:00:00.01 |       0 |      0 |       |       |          |

    |*  1 |  HASH JOIN |                                |      1.   3956.      0 | 00:00:00.01 |       0 |      0 |  2254K |  1061K | 2190K (0) |

    |*  2 |   HASH JOIN |                                |      1.     87.  16676. 00:00:01.64 |     227K |   3552.  3109K |  1106K | 4111K (0) |

    |*  3 |    TABLE ACCESS BY INDEX ROWID | CUSTINVOICEJOUR |      1.   1155 |  31889 | 00:00:01.16 |     223KO |     15.       |       |          |

    |*  4 |     INDEX RANGE SCAN | I_062INVOICEDATEORDERTYPEIDX |      1.   4943 |    134K | 00:00:00.83 |   45440 |      0 |       |       |          |

    |   5.    SIMPLE LIST OF PARTITION.                                |      1.  82360 |    173K | 00:00:00.08 |    3809 |   3537 |       |       |          |

    |*  6 |     TABLE ACCESS FULL | AVTR_SEG_CUST_CAMPEND |      1.  82360 |    173K | 00:00:00.06 |    3809 |   3537 |       |       |          |

    |   7.   TABLE ACCESS BY INDEX ROWID | CUSTINVOICETRANS |      1.   4560 |      0 | 00:00:00.01 |       0 |      0 |       |       |          |

    |*  8 |    INDEX RANGE SCAN | I_064INVLINENUMCAMPAIGNOFPRICE |      1.   4560 |      0 | 00:00:00.01 |       0 |      0 |       |       |          |

    --------------------------------------------------------------------------------------------------------------------------------------------------------------

    Information of predicates (identified by the operation identity card):

    ---------------------------------------------------

    1 - access("J".") "SYS_NC00299$"="T". "' SYS_NC00165$ ' AND SUBSTR (NLS_LOWER ('J'. "" "" REFFACTURE")(, 1, 25) = SUBSTR (NLS_LOWER ("T"." "" "REFFACTURE")(, 1, 25)).

    2 - access("J".") INVOICEACCOUNT '= SYS_OP_C2C ("EC". ". ACCOUNTNUM'))

    3 - filter("J".") AVAWARDSALES"> 190)

    4 - access("J".") SYS_NC00299$ "= U ' 201"AND "J". INVOICEDATE"> = TO_DATE(' 2014-06-04 00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND

    "J"." SYS_NC00307$ "= U ' 201406"AND "J". INVOICEDATE"< = TO_DATE (' 2014-06-13 00:00:00 ',' syyyy-mm-dd hh24:mi:ss')))

    filter ((' J'. "INVOICEDATE' > = 'J' AND TO_DATE(' 2014-06-04 00:00:00', 'syyyy-mm-dd hh24:mi:ss') '." " SYS_NC00307$ "= U '201406' AND"

    "J"." INVOICEDATE"< = TO_DATE (' 2014-06-13 00:00:00 ',' syyyy-mm-dd hh24:mi:ss'))))

    6 filter (("CE". "SEGMENT_LEVEL" = A "OR"THIS"." SEGMENT_LEVEL "=" E"))

    8 - access("T".") SYS_NC00165$ "= U ' 201"AND "T". AVBROCHURELINENUM "= 29457)

    filter ("T". ("AVBROCHURELINENUM" = 29457)

    EXPLAIN PLAN FOR

    Select / * + GATHER_PLAN_STATISTICS NO_PARALLEL * / J.INVOICEACCOUNT, J.INVOICEID, J.INVOICEDATE, (T.LINEAMOUNT + T.LINEAMOUNTTAX) price

    of custinvoicejour j join custinvoicetrans t on

    substr (nls_lower (j.DataAreaId), 1, 7) = substr (nls_lower (t.dataareaid), 1, 7) and

    substr (nls_lower (J.INVOICEID), 1: 25) = substr (nls_lower (t.INVOICEID), 1: 25)

    where

    substr (nls_lower (T.DATAAREAID), 1, 7) = '201' and T.AVBROCHURELINENUM = 29457

    and substr (nls_lower (j.dataareaid), 1, 7) = '201' and

    J.INVOICEACCOUNT in

    (select IT. Drmpos.avtr_seg_cust_campend ACCOUNTNUM this where THIS. CAMPAIGN = '201406' and THIS. SEGMENT_LEVEL in (', 'E'))

    and J.AVAWARDSALES > 190

    and substr (nls_lower (J.AVBILLINGCAMPAIGN), 1, 13) = '201406'

    "and J.INVOICEDATE between ' 04.06.2014' and ' 13.06.2014 ';

    SELECT * FROM table (DBMS_XPLAN. DISPLAY_CURSOR);

    SELECT * FROM table (DBMS_XPLAN. DISPLAY_CURSOR ('7h1nbzqjgwsp7', 2));

    SQL_ID, 7h1nbzqjgwsp7, number of children 2

    EXPLAIN PLAN for select / * + GATHER_PLAN_STATISTICS NO_PARALLEL * /.

    J.INVOICEACCOUNT, J.INVOICEID, J.INVOICEDATE,

    (T.LINEAMOUNT + T.LINEAMOUNTTAX) join price j custinvoicejour

    CustInvoiceTrans t on substr (nls_lower (j.dataareaid), 1, 7) =

    substr (nls_lower (t.DataAreaId), 1, 7) and

    = substr (nls_lower (J.INVOICEID), 1: 25)

    substr (nls_lower (t.INVOICEID), 1: 25) where

    substr (nls_lower (T.DATAAREAID), 1, 7) = '201' and T.AVBROCHURELINENUM =

    29457 and substr (nls_lower, (j.dataareaid), 1, 7) = '201' and

    J.INVOICEACCOUNT in (select CE. ACCOUNTNUM of

    drmpos.avtr_seg_cust_campend this where THIS. CAMPAIGN = '201406' and

    IT. SEGMENT_LEVEL in (', 'E')) and J.AVAWARDSALES > 190 and

    substr (nls_lower (J.AVBILLINGCAMPAIGN), 1, 13) = '201406' and

    "J.INVOICEDATE between ' 04.06.2014' and ' 13.06.2014 '.

    NOTE: cannot fetch SQL_ID plan: 7h1nbzqjgwsp7, CHILD_NUMBER: 2

    Check the value of SQL_ID and CHILD_NUMBER;

    It could also be that the plan is no longer in the cursor cache (check v$ sql_plan)

    NightWing wrote:

    Randolf,

    I don't understand. What you hear from the above statement that you mean A-lines and E will be incorrect, but the ratio between them remain the same. Therefore, you can deduct the bad things by comparing the differences.

    Thus, A-lines always give a wrong result for cancellation of queries, isn't it?

    Charlie,

    I think that Martin gave a good explanation. Here's another example that hopefully makes more obvious things:

    17:56:55 SQL >-things go very wrong here with a small buffer cache

    17:56:55 SQL >-T2 lines are badly scattered when you access through T1. FK

    17:56:55 SQL >--

    17:56:55 SQL >-"Small job" approach would have been a good idea

    17:56:55 SQL >-if the estimate of 100 iterations of the loop was correct!

    17:56:55 SQL > select

    17:56:55 (t2.attr2) count 2

    17:56:55 3 of

    17:56:55 4 t1

    17:56:55 5, t2

    17:56:55 6 where

    17:56:55   7  /*------------------*/

    17:56:55 8 trunc (t1.attr1) = 1

    17:56:55 9 and trunc (t1.attr2) = 1

    17:56:55 10 / *-* /.

    17:56:55 11 and t1.fk = t2.id

    17:56:55 12.

    T1

    *

    ERROR on line 4:

    ORA-01013: user has requested the cancellation of the current operation

    Elapsed time: 00:04:58.30

    18:01:53 SQL >

    18:01:53 SQL > @xplan_extended_display_cursor ' ' ' ' 'ALLSTATS LAST + COST.

    18:01:53 SQL > set echo off verify off termout off

    SQL_ID, 353msax56jvvp, number of children 0

    -------------------------------------

    SELECT count (t2.attr2) from t1, t2 where

    / / *-* trunc (t1.attr1) = 1 and

    trunc (T1.attr2) = 1 / *-* / and t1.fk = t2.id

    Hash value of plan: 2900488714

    ------------------------------------------------------------------------------------------------------------------------------------

    | ID | The NEST | DSB | Operation | Name | Begins | E - lines. Cost (% CPU). A - lines.   A - time | Pads | Bed |

    ------------------------------------------------------------------------------------------------------------------------------------

    |   0 |     |   7. SELECT STATEMENT |        |      1.        |  4999 (100) |      0 | 00:00:00.01 |       0 |      0 |

    |   1.   0 |   8 2 GLOBAL TRI |        |      1.      1.            |      0 | 00:00:00.01 |       0 |      0 |

    |   2.   1.   5.   NESTED LOOPS |        |      1.        |            |  57516 | 00:04:58.26 |     173K |  30770 |

    |   3.   2.   3.    NESTED LOOPS |        |      1.    100.  4999 (1) |  57516 | 00:00:21.06 |     116K |   3632.

    |*  4 |   3.   1.     TABLE ACCESS FULL | T1 |      1.    100.  4799 (1) |  57516 | 00:00:00.19 |    1008 |   1087 |

    |*  5 |   3.   2.     INDEX UNIQUE SCAN | T2_IDX |  57516 |      1.     1 (0) |  57516 | 00:00:20.82 |     115K |   2545 |

    |   8 2 2 |   4.    TABLE ACCESS BY INDEX ROWID | T2 |  57516 |      1.     2 (0) |  57516 | 00:04:37.14 |   57516 |  27138 |

    ------------------------------------------------------------------------------------------------------------------------------------

    Information of predicates (identified by the operation identity card):

    ---------------------------------------------------

    4 filter ((TRUNC ('T1'. "ATTR1") = 1 AND TRUNC ('T1'. " ATTR2') = 1))

    5 - access("T1".") FK '= 'T2'.' (ID')

    You say here that I canceled a query after about 5 minutes, and looking at the statistics of content (RowSource) I can already say the following:

    1. the estimation of cardinality of T1 is far - the optimizer estimated 100 lines, but it actually generated more than 57000 lines when the query was cancelled. If this definitely seems like a candidate at the origin of the problems

    2. the query has spent most of the time in search of random table T2

    So while it is true that I don't know final A-lines of this cancelled query information, I can still say a lot of this and begin to deal with the problems identified so far.

    Randolf

  • difference between the execution plan and explain the plan?

    What is the difference between the execution plan & explain the plan?

    an execution plan is the actual steps that oracle will pass by when it executes a query.

    explain plan is a tool that is used to generate the steps of an execution plan for a query.

  • Why I have two different execution plans for the same query on two different servers

    Hello everyone.

    I need your help to solve the problem quickly.

    In a nutshell, we have two servers that have the same version of Oracle RDBMS (11.2.0.4 EE). One of them for purposes of development and another is a production one.

    We have therefore two different execution plans for the same query executed on both servers. The only case of execution is OK and another is too slow.

    So I have to slow down the work of query using the same scheme to explain that young.

    Fence wire.

  • How to clear failed execution Plans?

    Hello world

    This should be an easy thing, but I can't seem to find a way to do it.

    I created a custom implementation plan and added each financial area in the plan. Then I generated settings, you click on build and then he ran. Failed to run.

    I noticed that there is a pre-configured with "R12 Financials_Oracle" execution plan and decided that I wanted to really run was Financials_Oracle R12 and not my personal plan. So I clicked on build for R12 Financials_Oracle plan of execution, and once it is finished, I clicked 'Run Now'. When you click Run now he told me that my custom implementation plan was completed with a failed State and until she is done correctly, no other plan could be run. I really don't want my custom plan completes successfully. I want to run the other plan instead.

    How to remove/delete on my failure run data so I can start a new execution plan?

    Thanks for the help!

    -Joe

    In DACS under the window RUN, do the following:
    -Go to the tab "Run in progress".
    -Highlight the execution plan has failed.
    -Click right and selected 'Brand.' as completed
    -Enter the number/text in the box.

    Then:

    -In the toolbar at the top of the page, select--> management ETL tools--> reset Data Sources
    -Enter the number/text in the boox.

    Now you are ready to start the new execution plan.

    I hope this helps.

    -Austin

  • Sense of the GOAL: &lt; text &gt; in the execution plan

    Hello

    Could you please help me understand the following in the execution plan (Oracle10gR2)?
    ++++++++++++++
    GOAL: HINT
    OBJECTIVE: ANALYZE
    ++++++++++++++

    For example, the following plan:
    Rows     Execution Plan
    -------  ---------------------------------------------------
          0  SELECT STATEMENT   GOAL: HINT: FIRST_ROWS
        301   HASH JOIN
        200    TABLE ACCESS   GOAL: ANALYZED (FULL) OF 'EP1'
        303    NESTED LOOPS
        304     TABLE ACCESS   GOAL: ANALYZED (BY INDEX ROWID) OF 'EP3'
        304      BITMAP CONVERSION (TO ROWIDS)
          2       BITMAP OR
          2        BITMAP INDEX (SINGLE VALUE) OF 'EP3_BI1'
          2        BITMAP INDEX (SINGLE VALUE) OF 'EP3_BI2'
        303     TABLE ACCESS   GOAL: ANALYZED (BY INDEX ROWID) OF 'EP2'
        606      INDEX   GOAL: ANALYZED (UNIQUE SCAN) OF 'EP2_PK' (UNIQUE)
    My question is: what do I do ' GOAL: HINT ' and ' GOAL: ANALYSIS "means? Not specifically for the plan above, just a question about how they mean when they show up in the plan of execution like the one above.

    Thank you!

    Published by: shape on May 6, 2009 10:52

    Published by: shape on May 6, 2009 10:54

    Published by: shape on May 6, 2009 10:58

    New: your exit is whence?
    And I wonder too much about the word 'OBJECTIVE', the previous words and then the words are much more interest.

    GOAL: TIP: FIRST_ROWS<-- optimizer="" decided="" to="" use="" first_rows="">
    301 HASH JOIN
    TABLE 200 ACCESS OBJECTIVE: ANALYZED (FULL)<-- optimizer="" decided="" to="" go="" for="" a="" full="" table="" scan="" based="" on="" provided="" table="" stats="" ('analyzed'="" means:="" stats="" are="" available="" for="">
    303 NESTED LOOPS
    304 TABLE ACCESS OBJECTIVE: ANALYSIS (BY INDEX ROWID)<-- optimizer="" decides="" to="" go="" for="" an="" index="" scan="" here="" based="" on="" provided="" table="" stats="" ('analyzed'="" means:="" stats="" are="" available="" for="">

  • How to shorten the execution time of the NXT (TETRIX &amp; MATRIX toolkit) brick

    Hello

    How to shorten the execution time of the NXT brick?

    (TETRIX & MATRIX toolkit, running time)

    The software is 2012 LabVIEW for LEGO MINDSTORMS

    Thank you.

    Hi 40123157,

    You use the module in an appropriate manner, and there is no simple way to improve the time of loop iteration beyond what you've done. Here are my suggestions:

    (1) the i2c commands take a long time. In your application, it may speed up if you run only move the engine only when the engine speed has changed.

    (2) for this particular example, you do not use the release of the report engine. If this VI does not need to run it can be removed.

    (3) If you need to speed up execution other than that, as a user advanced LabVIEW, you can create a copy of the VI of engines to move and change it as you choose. All you have to to the "DC motors' entry is use cluster to array on the cluster, as shown below. I think you can speed it up by running all the settings before the loop (type sensor and fixed connection configuration), and removing the value of power if you send only the values between-100 and 100.

    (4) drawing on the screen can be slow you down here.

  • How to calculate the execution time of a SCTL in FPGA VI?

    Hello

    Can someone guide me that how to calculate the execution time of a SCTL for an iteration in the FPGA VI?

    Thank you and best regards,

    Rashid

    Hello r,.

    A SCTL will always run in a beat the clock it has been linked to.  So, if you use a 40 MHz clock, this loop will run in 25 ns.  If the code cannot complete in that, or if it requires two graduations of the watch to do the calculation, your code does not compile, then you have the guarantee that this will always be how long it takes this piece of code to run.

  • How to measure the execution time of a specific to a VI process?

    Hello! My VI has two processes: compression and edge detection image and I'm trying to measure the execution time for the process of detection of edge of my VI, but I don't know how to do. Please give me some ideas on how to do it. Thank you!

    There are several ways that you can do.

    -L' one is using the number of cycles before and after your vi to get time like here: http://digital.ni.com/public.nsf/allkb/6F6B9F4E149C80578625652800784764

    - or use the profiling: https://zone.ni.com/reference/en-XX/help/371361H-01/lvhowto/profiling_vis/

    Edit: If you're open to suggestions:

    -You have not to load the image inside the loop instead, make him outside of the loop.

    - And I see of many IMAQ buffers are not removed properly. You can have everything at once by Images (No) by logging in to Boolean TRUE: http://zone.ni.com/reference/en-XX/help/370281P-01/imaqvision/imaq_dispose/

  • Cost of the execution plan is different in the two databases

    Hi gurus,

    I have two databases, which are 12 C.

    The execution plan cost is different in the two databases for the same query.

    is it possible to copy the execution to another plan.

    Thank you in advance

    Kind regards

    REDA

    Jr.Raj wrote:

    There are a few differences.

    The machine that has a high cost, has setup up, linux, 2-node RAC, more CPU.

    and

    other machine windows server less Setup and less cpus.

    Please explain, cost really makes a difference.

    Thank you & best regards

    REDA

    You simply can't compare costs like that. It does not work like that. Especially through two different systems.  Here is a very good read: column the COST of the PLAN to EXPLAIN. Oracle FAQ

  • Star_transformation not shoiwng in the execution plan

    Hello

    We have a data warehouse and processing star not no projection in the execution plan.

    STAR_TRANSFORMATION_ENABLED at the database level.

    With the help of 11.2.0.3 on AIX

    The fact table has index bitmap and fks to keys on tables dimesnion dimesnion.

    Example query
    select *
    from media m, retailer_transaction rt
    , retailer r
    where m.dimension_key = rt.plant_issue_id
    and rt.outlet_id = r.dimension_key
    and prod_num = 600
    Anthing we are ' % s '?

    Found how interrogate more selective cause said to use star_transformation

    added and plis_handled_year = 2013
    and out_num 123423

    Why is this good?

    Is there a rule such as only highly selective queries will use transformation star?

    Thank you

    Published by: user5716448 on February 15, 2013 04:10

    Transformation of Star I it'sactually one expensive thing to do. So, the optimizer plans an ABC on this subject. This quote comes from a piece on the blog of optimizer Oracle [url https://blogs.oracle.com/optimizer/entry/star_transformation]:

    "The transformation is performed based on cost - when the cost of the transformed plan is lower than that of the unprocessed plan. If dimension filters do not significantly reduce the amount of data to be extracted from the fact table, and then a full table scan is more effective. »

    Cheers, APC

  • How many captures instant ESXi provides for each VM?

    Sorry, but I can't really find this little piece of information.

    How many captures instant ESXi provides for each VM?  VMWare Server, we would have only a snapshot.  So I guess it's also a snapshot in ESXi, right?

    ESXi supports more then a snapshot, although I couldn't find the exact number, it is quite high for most peoples use of snapshots.

  • How to capture the values

    Hi friends,

    I came across one of the scenarios, i.e.

    In my application, I have a report page and a form page, the report and the form are based on the unique table...

    If a record is inserted medium, means it will be inserted in the report...

    in the region of report I have an button called then if I clicked the next button means a form page must open to capture all values which is inserted in the report of each field of the form...

    How to capture the values of the ratio to form shortly after clicking on the button NEXT in the region of report...

    Help me solve this question friends,

    Thank you
    Saro...

    Hello

    For the Next button , which is located in the region of report,

    change the Action: to redirect to the page and give the respective page number: (i.e.) the target...

    And specify the value of these items: what are all the elements of the target.

    with these values: describe the elements of the source where you will take the values of the corresponding points...

    Izz all wells
    GTA...

Maybe you are looking for

  • Icon alias Sierra

    I found this strange thing in the Sierra.  Is it just me?  An alias is only the generic document icon.  It still works.  'Get Info' display the correct icon.  But a window in the Finder in icon view shows only as a rectangle with the corner folded do

  • Format microtour Dx6100 display problems.

    Hello I have a computer format microtour dx6100. I've upgraded to windows 7 64 bit and everything works fine except that I have problems with the display. The VGA output will not go in widecreen? I can't find a driver for this problem. I also tried t

  • Why is there no data or photos in my ICloud drive on my iPhone 6 s?

    Every thing is set up correctly in settings on my 6s to ICloud and ICLOUD app in the car, but nothing appears when I open ICloud drive on my phone.  She has been saved, the drive in market and off and on again, in settings, docs still only 2 appear t

  • Lg p925 device does not appear on my computer as a device mass storge

    USB downloaded and installed the device drivers and LG support software tool.

  • HP LaserJet MFP M127fw Pro: How can I set a password for my printer?

    Hello I managed to set up my new HP LaserJet printer. It is connected to our wireless network. I would like to put a password so that only those with the password can access the printer. How can I do? I'm not very good with tips and computer network.