To cache the query?

Here's what I'm trying to do:

I have a database where I display information in a table - on every column, there is the possibility to order asc or desc. It works by using a switch statement to change the order. Now, recently I added filtering options, and it works very well, too using a cfif to change the WHERE clause in the query.

My problem is that once the page reloads with the new filtered information, my asc, desc does not work with the filtered options - instead, it reloads the page captures ALL the records and then up or down. Should I be caching the query? Or y at - it another way to ASC and desc? Thanks for any help - let me know if I need to add more information.

creelove,

Which application are you trying to cache? There are several requests in the example code PDF and I know you mentioned that you have changed the code a little, but I'm guessing that queries are similarly structured in your conditional statements (suggestion on that below).

If it's the cfquery named "qry_record" that you want to cache, which is going to be a problem. To cache a query (unless this has changed in CF 8, I have not checked), the query must be * exactly * the same thing.

This query:

Select * from table where itemA = "#itemA #

Is this not the same (in terms of caching) as this query:

Select * from table where itemB = "#itemB #

Without the "corresponding" queries, caching does not work as expected.

Another thing I noticed is that your (hidden field) is not using a dynamic value is always Yes. Don't know if that could lead to a question for you, but thought I'd call it (because you pass a key/value in the URL for 'filter').

Given the code, variable were you trying to store in the scope of the session and how you were (it was not in the code example, unless I missed it!)?

The application of qry_record:

It's just a suggestion, and what you have is not bad, please disregard if you wish.

You are repeated several times the qry_record in your code and you could do just a single shot (which a little easier for you to read and to debug the code). The application of qry_record in the respective conditional block, is the same in all cases, except for the place where clause:

Select *.

from the data. WF_Masterview2

^^ When x = y ^^

order by = #orderby #.

You can configure the part WHERE your query in the conditional block, and then type the query once at the end (a bit like what you're doing when you set the orderby variable):

Col = 'itemA.

Val = #itemA #.

Col = 'itemB.

Val = #itemB #.

Col = 'itemC.

Val = #itemC #.

Col = 'itemA.

Val = #itemA #.

After this conditional block is running, you can run the query:

select *

from data.WF_Masterview2

where #col# = '#val#'

order by = #orderby#

name=" "="">

Tags: ColdFusion

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    at com.gemstone.gemfire.cache.client.internal.QueryOp.execute(QueryOp.java:51)
    at com.gemstone.gemfire.cache.client.internal.ServerProxy.query(ServerProxy.java:81)
    at com.gemstone.gemfire.cache.query.internal.DefaultQuery.executeOnServer(DefaultQuery.java:282)
    at com.gemstone.gemfire.cache.query.internal.DefaultQuery.execute(DefaultQuery.java:213)
    at com.gemstone.gemfire.cache.query.internal.DefaultQuery.execute(DefaultQuery.java:195)
    at com.gemstone.gemfire.mgmt.DataBrowser.query.QueryUtil.executeQuery(QueryUtil.java:70)
    ... 3 more

    If you set the gemfire bind-address on the cache server, applications will be able to connect. If a bind-address is not defined in gemfire.properties for a server remote cache, applications unfortunately just silently by default is localhost. This is something that will have to solve. In the meantime, you can work around this by setting the property gemfire bind-address on the cache servers for either the IP address or host name.

  • Execution of the query against the service

    I wonder what's the difference between running a query on a region that partitioned for a set of objects cached vs using a function distributed to the combined results and return them to the node running?

    The problem, I'm trying make me get all objects from the cache in a region that partitioned a certain type and then perform a calculation on the subject after I he gains the cache to see if it should be added to all final results that I return to my request. I'm not aiming for a specific node for these objects; they can reside anywhere in the partitioned area. Is this the same difference using a query and running the calculation on each object in the result of the query defined in terms of running a distributed function and perform the calculation in distributed mode before returning the results to the running node?

    I think I would use the API to query within the service (Query.execute (RegionFunctionContext)) to query local entries. Are you familiar with the API Query.execute (RegionFunctionContext)? Basically, who runs the query only on local data.

    Then filter these additional results in the function, and then finally to return results filtered out to the customer. Do the same filtering on each local server before returning anything to the client. According to the difference between the result set size and size final filtered results, you will gain a lot of IO, not to mention the serialization/deserialization. You may also be able to do the calculation in the query itself if you have a method for this in the object.

    Barry

  • Structured XMLIndex not used by the query

    Hello

    We try to use XMLIndexes structured for a query. But they are not used. A sample of similar work is as follows:


    -Oracle Database 11 g Enterprise Edition Release 11.2.0.3.0 - 64 bit Production

    Example of XML data on the XMLTYPE column is:

    <?xml version="1.0" encoding="UTF-8" standalone='yes'?>  
<abc:tagOne preparationTime="2012-10-17T13:01:23.000Z" schemaVersion="1.3.9.0" xsi:schemaLocation="" xmlns:def="DEF" xmlns:abc="ABC"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">  
    <def:tagTwo>  
        <def:tagThree id="Identity1">  
            <def:Section domain="Domain123">10000</def:Section>  
        </def:tagThree>  
        <def:tagThree id="Identity2">  
            <def:Section domain="Domain123">20000</def:Section>  
        </def:tagThree>  
        <def:tagThree id="Identity3">  
            <def:Section domain="Domain123">30000</def:Section>  
        </def:tagThree>  
        <def:tagThree id="Identity4">  
            <def:Section domain="Domain123">40000</def:Section>  
        </def:tagThree>  
    </def:tagTwo>  
</abc:tagOne>



    Query is like:

    select  XMLAGG(XML_MESSAGE)  
    from INT_PART_TABLE  
    where XMLExists('  
        declare namespace abc="ABC";  
        declare namespace def="DEF";  
        $Message/abc:tagOne/def:tagTwo/def:tagThree[@id="Identity4"][def:Section[@domain="Domain123"]  = ("50000", "40000") ]'  
        passing  
        xML_mESSAGE as "Message"  
    )


    We try to create indexes structured on the column of xmltype, as defined in the XML example file:

    CREATE INDEX INT_PART_TABLE_SXI
   ON INT_PART_TABLE (XML_MESSAGE)
   INDEXTYPE IS XDB.XMLINDEX
      PARAMETERS ('XMLTABLE INT_PART_content_table_01
                           XMLNAMESPACES (''ABC'' AS "abc",
                                          ''DEF'' AS "def"),  
                           ''/abc:tagOne/def:tagTwo''
                   COLUMNS
                     xmltagTwo      XMLTYPE  PATH ''/abc:tagOne/def:tagTwo''  VIRTUAL
                   XMLTABLE INT_PART_content_table_02
                     XMLNAMESPACES (''DEF'' AS "def"),
                     ''/def:tagTwo''
                            PASSING xmltagTwo
                             COLUMNS 
                             xmltagThree     XMLTYPE  PATH ''/def:tagThree''   VIRTUAL
                   XMLTABLE INT_PART_content_table_03
                      XMLNAMESPACES (''DEF'' AS "def"),    
                      ''/def:tagThree''
                         PASSING xmltagThree
                           COLUMNS 
                           section number PATH ''def:Section'',
                           domain varchar2(20) PATH ''@domain'',
                           id varchar2(20) PATH ''@id''
              ')local;

    Table structure:

    CREATE TABLE INT_PART_TABLE
(
   DB_ID            VARCHAR2 (10 BYTE),
   xML_mESSAGE      SYS.XMLTYPE,
   LOAD_TIMESTAMP   TIMESTAMP (6)
)
XMLTYPE xML_mESSAGE
   STORE AS BINARY XML
   (ENABLE STORAGE IN ROW
    CHUNK 16384
    RETENTION
    CACHE READS NOLOGGING)
   ALLOW NONSCHEMA
   DISALLOW ANYSCHEMA
PCTUSED 0
PCTFREE 10
INITRANS 1
MAXTRANS 255
STORAGE (BUFFER_POOL DEFAULT)
PARTITION BY RANGE (LOAD_TIMESTAMP)
   (PARTITION P_12092012 VALUES LESS THAN (TIMESTAMP ' 2012-09-12 00:00:00')
       LOGGING
       NOCOMPRESS
       PCTFREE 10
       INITRANS 1
       MAXTRANS 255
       STORAGE (INITIAL 512 K
                NEXT 512 K
                MINEXTENTS 1
                MAXEXTENTS UNLIMITED
                PCTINCREASE 0
                BUFFER_POOL DEFAULT),
    PARTITION MAX VALUES LESS THAN (MAXVALUE)
       LOGGING
       NOCOMPRESS
       PCTFREE 10
       INITRANS 2
       MAXTRANS 255
       STORAGE (INITIAL 128 K
                NEXT 128 K
                MINEXTENTS 1
                MAXEXTENTS UNLIMITED
                PCTINCREASE 0
                BUFFER_POOL DEFAULT))
PARALLEL (DEGREE 8 INSTANCES 1);

    - But the query above does not use the XMLINDEX STRUCTURE and instead turns to FTS INT_PART_TABLE.  Please help here.

    Is it the wrong way I created structured Index.

    (I tried a few other ways where I got-> ORA-19279: XPTY0004 - dynamic XQuery type mismatch: expected - singleton sequence got several sequence element).

    S ' Please NOTE that I used two "VIRTUAL" during the creation of the Index as otherwise I was getting the error:
    ORA-29958: fatal error occurred in the execution of routine ODCIINDEXCREATE
    ORA-30984: the XMLType column must be declared as virtual

    Please suggest. Thank you.

    Finally some time to watch this...

    The following works for me:

    Connected to:

    Oracle Database 11 g Enterprise Edition Release 11.2.0.3.0 - 64 bit Production

    With partitioning, OLAP, Data Mining and Real Application Testing options

    SQL > create table (int_part_table)

    2 db_id varchar2 (10 byte)

    3, xml_message xmltype

    4, load_timestamp timestamp (6)

    5)

    store xml_message 6 xmltype to the binary xml format

    7 partition by range (load_timestamp)

    () 8

    9 lower values p_12092012 partition to (to_timestamp ('2012-09-12 00:00:00 ',' YYYY-MM-DD HH24:MI:SS'))))

    10, partition p_max values less than (maxvalue)

    11)

    12 parallel (degree 8 instances 1);

    Table created.

    SQL > create index int_part_table_sxi on int_part_table (xml_message)

    2 indextype is xdb.xmlindex

    3 rooms

    4 parameters (q'~)

    5 XMLTABLE int_part_content_table_01

    6 XMLNAMESPACES ('ABC' AS 'abc', 'DEF' AS 'def'),

    7 ' / abc: Tallet / def:tagTwo / def:tagThree'

    8 COLUMNS

    9 article binary_double PATH 'def:Section '.

    10, area varchar2 (20) PATH 'def:Section/@domain '.

    11, id varchar2 (20) PATH '@id '.

    12 ~');

    The index is created.

    SQL >

    SQL >

    SQL > insert into int_part_table values)

    2 '1'

    3, xmltype (')

    4

    ' NS:ABC = 'ABC' xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" > ".

    5

    6

    7              10000

    8

    9

    10 20000

    11

    12

    13 30000

    14

    15

    16 40000

    17

    18

    19 ')

    20, systimestamp

    (21);

    1 line of creation.

    SQL > commit;

    Validation complete.

    SQL > exec dbms_stats.gather_table_stats (user, 'INT_PART_TABLE');

    PL/SQL procedure successfully completed.

    SQL >

    SQL >

    SQL > set autotrace traceonly explain

    SQL > set lines 200

    SQL > define pages 100

    SQL >

    SQL > select / * + no_parallel * / xml_message

    2 of int_part_table

    3 where (XMLExists)

    4 ' declare namespace abc = "ABC"; (::)

    5 declare def namespace = "DEF"; (::)

    /ABC:tagOne/def:tagTwo/def:tagThree[@ID="Identity4 6 '.

    7 and def:Section/@domain="Domain123.

    8 and (def:Section = 40000

    9 or def:Section = 50000)]"

    10 passage xml_message

    11        ) ;

    Execution plan

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

    Hash value of plan: 3112612945

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

    | ID | Operation | Name                      | Lines | Bytes | Cost (% CPU). Time | Pstart. Pstop |

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

    |   0 | SELECT STATEMENT |                           |     1.   417.    15 (0) | 00:00:01 |       |       |

    |   1.  SEMI NESTED LOOPS.                           |     1.   417.    15 (0) | 00:00:01 |       |       |

    |   2.   RANGE OF PARTITION ALL THE |                           |     1.   367.    14 (0) | 00:00:01 |     1.     2.

    |   3.    TABLE ACCESS FULL | INT_PART_TABLE |     1.   367.    14 (0) | 00:00:01 |     1.     2.

    |   4.   ITERATOR SYSTEM PARTITION.                           |     1.    50.     1 (0) | 00:00:01 |   KEY |   KEY |

    |*  5 |    TABLE ACCESS BY LOCAL INDEX ROWID | INT_PART_CONTENT_TABLE_01 |     1.    50.     1 (0) | 00:00:01 |   KEY |   KEY |

    |*  6 |     INDEX RANGE SCAN | SYS78560_78563_RID_IDX |     1.       |     0 (0) | 00:00:01 |   KEY |   KEY |

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

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

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

    5 - filter("SYS_SXI_0".") ID "="Identity4"AND ("SYS_SXI_0"". ")" SECTION "IS 4.0E + 004 D OR 'SYS_SXI_0'." SECTION "(= 5.0E + 004 D) AND"

    'SYS_SXI_0 '. ("DOMAIN"="Domain123")

    6 - access ("INT_PART_TABLE". ROWID = "SYS_SXI_0." ("' RID ')

    filter (TBL$ OR$ IDX$ PART$ NUM ("DEV".) "INT_PART_TABLE", 0,0,0, "INT_PART_TABLE". ROWID) TBL = $ OR$ IDX$ PART$ NUM ("DEV". "INT_PAR

    T_CONTENT_TABLE_01", 0,0,0,"SYS_SXI_0. " ROWID))

    A few things to know:

    -use BINARY_DOUBLE datatype to untyped (i.e. not based on a diagram) the numerical values of the XML index.

    -J' developed the sequence iterator predicate you were using for a Boolean expression GOLD. Otherwise, the index is not used as intended.

    You can also create a secondary index that satisfies the predicate #5 (see red part above):

    SQL > create index int_part_content_table_01_ix1

    2 on local int_part_content_table_01 (id, field, section);

    The index is created.

    SQL >

    SQL > select / * + no_parallel * / xml_message

    2 of int_part_table

    3 where (XMLExists)

    4 ' declare namespace abc = "ABC"; (::)

    5 declare def namespace = "DEF"; (::)

    /ABC:tagOne/def:tagTwo/def:tagThree[@ID="Identity4 6 '.

    7 and def:Section/@domain="Domain123.

    8 and (def:Section = 40000

    9 or def:Section = 50000)]"

    10 passage xml_message

    11        ) ;

    Execution plan

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

    Hash value of plan: 3704965392

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

    | ID | Operation | Name                          | Lines | Bytes | Cost (% CPU). Time | Pstart. Pstop |

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

    |   0 | SELECT STATEMENT |                               |     1.   417.     4 (25) | 00:00:01 |       |       |

    |   1.  NESTED LOOPS |                               |     1.   417.     4 (25) | 00:00:01 |       |       |

    |   2.   UNIQUE FATE |                               |     2.   100.     2 (0) | 00:00:01 |       |       |

    |   3.    SYSTEM PARTITION ALL |                               |     2.   100.     2 (0) | 00:00:01 |     1.     2.

    |   4.     TABLE ACCESS BY LOCAL INDEX ROWID | INT_PART_CONTENT_TABLE_01 |     2.   100.     2 (0) | 00:00:01 |     1.     2.

    |*  5 |      INDEX RANGE SCAN | INT_PART_CONTENT_TABLE_01_IX1 |     1.       |     1 (0) | 00:00:01 |     1.     2.

    |*  6 |   TABLE ACCESS BY ROWID USER | INT_PART_TABLE |     1.   367.     1 (0) | 00:00:01 | ROWID | ROWID |

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

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

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

    5 - access("SYS_SXI_0".") ID '= 'Identity4' AND 'SYS_SXI_0'." DOMAIN "=" Domain123 ")

    filter ("SYS_SXI_0". "SECTION"IS 4.0E + 004 D OR 'SYS_SXI_0'." SECTION "(= 5.0E + 004 D)"

    6 filter (TBL$ OR$ IDX$ PART$ NUM ("DEV".) "INT_PART_TABLE", 0,0,0, "INT_PART_TABLE". ROWID) TBL = $ OR$ IDX$ PART$ NUM ("DEV". "INT_PART_CON

    TENT_TABLE_01", 0,0,0,"SYS_SXI_0. " ROWID))

  • The right way to store the results of the query

    Hey wizards Oracle,.

    I have a few questions that take a long time to run. Given that the results of these queries change only once a day, I will execute queries every morning and store their results in a table.

    I was going to serialize them in chains to the CSV format and then store them as CLOB. But shit, Oracle is a data table, storage system! This is reinventing the wheel within a wheel.
    Then I thought about creating one table per query would be the right way to store their results. But ordinary tables data recovery would be slow, because I would need to create an additional of ORDER_BY column to maintain the order of the results of the query.

    It seems that there is a way to store varrays in the LOB columns, but it does not seem to be appropriate.
    There may be a caching mechanism that could help?

    Does anyone know the proper way to store the result of a query?

    What you describe is a reinvention of the materialized views.
    Have you considered using them?

    ----------
    Sybrand Bakker
    Senior Oracle DBA

  • The query sql without prescription by will return same result on several tracks?

    Hello

    I have a sql without a prescription and I limit the number of rows to 100 max per rownum < 100. Now the question is, if the data set on which this sql is running, does not change, the sql returns the same result the performance of several?

    For example, there are 150 lines and the sql returns 100 rows because of rownum < 100. Now running the same sql several times, I have the same set of 100 lines? or it could be 150? On the basis of these the kind of database engine and return data when no order by clause are provided?

    Thank you for your time.

    -Hozy

    Hi, Hozy,

    Hozy says:
    Hello

    I have a sql without a prescription and I limit the number of rows to 100 max per rownum< 100.="" now="" the="" question="" is,="" if="" the="" data="" set="" on="" which="" this="" sql="" runs,="" does="" not="" change,="" will="" the="" sql="" return="" the="" same="" result="" set="" on="" multiple="">

    N ° if there is no ORDER BY clause, then there is no guarantee that the order will remain the same. If the table is small, the output will probably be the same thing, but you can't count on it.
    I guess that you do not have a CONNECT BY query. CONNECT BY queries without ORDER BY clause or brothers and SŒURS of ORDER BY, the output is partially ordered.

    For example, there are 150 lines and the sql returns 100 rows due to rownum< 100.="" now="" on="" executing="" the="" same="" sql="" multiple="" times,="" will="" i="" get="" the="" same="" set="" of="" 100="" rows?="" or="" it="" could="" be="" any="" of="" the="" 150?="" on="" what="" bases="" these="" the="" database="" engine="" sort="" and="" return="" data="" when="" no="" order="" by="" clause="" is="">

    No, you necessarily will not get the same 100 lines each time. ROWNUM reflects the order in which the establishment has recovered the lines.
    Say you run the query at 11:00. Maybe do you a full table scan to obtain the data on the drive, and the order of the lines is determined by how it data happens to be on the disk. As the data is read from the disk, it is cached in memory.
    Say you run the same exact query at 12:00, without changing the table. Instead of retrieve all data from the disk, Oracle will try to use the blocks that are cached in memory, which is not necessarily the way the blocks are stored on the disk. If some of the older blocks 11:00 to 12:00 (otherwise said, some, but not all, blocks are more in memory because memory was required for other purposes), then the items picked up at 11:00 can be recovered first at 12:00 and the lines that I have high ROWNUMs at 11:00 can get low ROWNUMs at 12:00. (See Matthew 7:30.)

    Again, you would never notice it on a small table. You can run this query

    SELECT  ename
FROM    scott.emp
WHERE   ROWNUM  < 10;

    a thousand times and get the same results every time. You will get the same results the 1001eme time? Probably, but not necessarily.

    If you want the output to be in a particular order, to use an ORDER BY clause in the main query.
    If you want ROWNUM to reflect a particular order, use a subquery with an ORDER BY clause and ROWNUM reference in the main query.

  • Slow index by using the query. Fast with full table Scan.

    Salvation;

    (Thanks for the links)

    Here's my question correctly formatted.

    The query:
    SELECT count(1)
from ehgeoconstru  ec 
where ec.TYPE='BAR'  
AND ( ec.birthDate <= TO_DATE('2009-10-06 11:52:12', 'YYYY-MM-DD HH24:MI:SS') )   
and deathdate is null 
and substr(ec.strgfd, 1, length('[CIMText')) <> '[CIMText'
    Works on 32 seconds!


    Same query, but with an extra where clause:
    SELECT count(1)
from ehgeoconstru  ec 
where ec.TYPE='BAR'  
and  ( (ec.contextVersion = 'REALWORLD')     --- ADDED HERE
AND ( ec.birthDate <= TO_DATE('2009-10-06 11:52:12', 'YYYY-MM-DD HH24:MI:SS') ) )  
and deathdate is null 
and substr(ec.strgfd, 1, length('[CIMText')) <> '[CIMText'
    This is 400 seconds.

    It should return data from a table, given the conditions.

    The database version is Oracle9i Release 9.2.0.7.0

    These are the parameters relevant for the optimizer:
    SQL> show parameter optimizer

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
optimizer_dynamic_sampling           integer     1
optimizer_features_enable            string      9.2.0
optimizer_index_caching              integer     99
optimizer_index_cost_adj             integer     10
optimizer_max_permutations           integer     2000
optimizer_mode                       string      CHOOSE

SQL>
    Here is the output of the PLAN to EXPLAIN for the first quick query:
    PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
| Id  | Operation                     |  Name               | Rows  | Bytes | Cost  |
--------------------------------------------------------------------------------
|   0 | SELECT STATEMENT     |                         |           |       |       |
|   1 |  SORT AGGREGATE       |                         |           |       |       |
|*  2 |   TABLE ACCESS FULL   | EHCONS            |       |       |       |
--------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------

   2 - filter(SUBSTR("EC"."strgfd",1,8)<>'[CIMText' AND "EC"."DEATHDATE"
              IS NULL AND "EC"."BIRTHDATE"<=TO_DATE('2009-10-06 11:52:12', 'yyyy
-mm-dd

              hh24:mi:ss') AND "EC"."TYPE"='BAR')

Note: rule based optimization
    Here is the output of the EXPLAIN of PLAN for slow queries:
    PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
   |       |

|   1 |  SORT AGGREGATE              |                             |       |
   |       |

|*  2 |   TABLE ACCESS BY INDEX ROWID| ehgeoconstru      |       |
   |       |

|*  3 |    INDEX RANGE SCAN          | ehgeoconstru_VSN  |       |
   |       |


PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
2 - filter(SUBSTR("EC"."strgfd",1,8)<>'[CIMText' AND "EC"."DEATHDATE" IS
 NULL AND "EC"."TYPE"='BAR')

PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
   3 - access("EC"."CONTEXTVERSION"='REALWORLD' AND "EC"."BIRTHDATE"<=TO_DATE('2
009-10-06

              11:52:12', 'yyyy-mm-dd hh24:mi:ss'))
       filter("EC"."BIRTHDATE"<=TO_DATE('2009-10-06 11:52:12', 'yyyy-mm-dd hh24:
mi:ss'))


Note: rule based optimization
    The TKPROF output for this slow statement is:
    TKPROF: Release 9.2.0.7.0 - Production on Tue Nov 17 14:46:32 2009

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.

Trace file: gen_ora_3120.trc
Sort options: prsela  exeela  fchela  
********************************************************************************
count    = number of times OCI procedure was executed
cpu      = cpu time in seconds executing 
elapsed  = elapsed time in seconds executing
disk     = number of physical reads of buffers from disk
query    = number of buffers gotten for consistent read
current  = number of buffers gotten in current mode (usually for update)
rows     = number of rows processed by the fetch or execute call
********************************************************************************

SELECT count(1)
from ehgeoconstru  ec
where ec.TYPE='BAR'
and  ( (ec.contextVersion = 'REALWORLD')
AND ( ec.birthDate <= TO_DATE('2009-10-06 11:52:12', 'YYYY-MM-DD HH24:MI:SS') ) )
and deathdate is null
and substr(ec.strgfd, 1, length('[CIMText')) <> '[CIMText'

call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch        2      0.00     538.12     162221    1355323          0           1
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        4      0.00     538.12     162221    1355323          0           1

Misses in library cache during parse: 0
Optimizer goal: CHOOSE
Parsing user id: 153  

Rows     Row Source Operation
-------  ---------------------------------------------------
      1  SORT AGGREGATE 
  27747   TABLE ACCESS BY INDEX ROWID OBJ#(73959) 
2134955    INDEX RANGE SCAN OBJ#(73962) (object id 73962)

********************************************************************************

alter session set sql_trace=true


call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        0      0.00       0.00          0          0          0           0
Execute      1      0.00       0.02          0          0          0           0
Fetch        0      0.00       0.00          0          0          0           0
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        1      0.00       0.02          0          0          0           0

Misses in library cache during parse: 0
Misses in library cache during execute: 1
Optimizer goal: CHOOSE
Parsing user id: 153  



********************************************************************************

OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS

call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        1      0.00       0.00          0          0          0           0
Execute      2      0.00       0.02          0          0          0           0
Fetch        2      0.00     538.12     162221    1355323          0           1
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        5      0.00     538.15     162221    1355323          0           1

Misses in library cache during parse: 0
Misses in library cache during execute: 1


OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS

call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        0      0.00       0.00          0          0          0           0
Execute      0      0.00       0.00          0          0          0           0
Fetch        0      0.00       0.00          0          0          0           0
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        0      0.00       0.00          0          0          0           0

Misses in library cache during parse: 0

    2  user  SQL statements in session.
    0  internal SQL statements in session.
    2  SQL statements in session.
********************************************************************************
Trace file: gen_ora_3120.trc
Trace file compatibility: 9.02.00
Sort options: prsela  exeela  fchela  
       2  sessions in tracefile.
       2  user  SQL statements in trace file.
       0  internal SQL statements in trace file.
       2  SQL statements in trace file.
       2  unique SQL statements in trace file.
      94  lines in trace file.
    Published by: PauloSMO on November 17, 2009 04:21

    Published by: PauloSMO on November 17, 2009 07:07

    Published by: PauloSMO on November 17, 2009 07:38 - title changed to be more correct.

    Although your optimizer_mode is choosing, it seems that there are no statistics collected on ehgeoconstru. The absence of estimated costs and estimated row counts of each of the stages of the plan and the "Note: optimization based on rules" at the end of these two plans would tend to confirm this.

    Optimizer_mode choose means that if statistics are collected then it will use the CBO, but if no statistic is present in any of the tables in the query, the optimizer to rule will be used. The RBO tends to be happy in the best of the index case. I guess the index ehgeoconstru_VSN contextversion as the main column and also includes the date of birth.

    You can either gather statistics on the table (if all other tables have statistics) using dbms_stats.gather_table_stats, or suggest the query to use a full scan instead of index. Another solution would be to apply a function or an operation against the contextversion to prevent the use of the index. something like this:

    SELECT COUNT(*)
FROM ehgeoconstru  ec
WHERE ec.type='BAR' and
      ec.contextVersion||'' = 'REALWORLD'
      ec.birthDate <= TO_DATE('2009-10-06 11:52:12', 'YYYY-MM-DD HH24:MI:SS') and
      deathdate is null and
      SUBSTR(ec.strgfd, 1, LENGTH('[CIMText')) <> '[CIMText'

    or maybe UPPER (ec.contextVersion) so that would not change the rows returned.

    John

  • attempts to cancel the query discoverer - it takes long time to cancel...

    Hello world

    I cancelled a beak of query. It took a long time to run

    Now it takes a long time to cancel

    The admin is out to lunch...

    all advice, pls, thx, sandra

    Hi, Sandra
    In general, the reason for the cancellation of a query is that it has worked too long - right?

    Behind the scenes, one of two things happening, either:

    1. the request was to have a hard time finding data and is always looking, or
    2. the query found some data but not enough to satisfy the query governor parameters

    For these, depending on the amount of data has so far been recovered, discoverer must these data somewhere. This is called a cache. The data you put in a cache more must be allowed to come out it should you decide not to go forward. This is probably what has happened to you.

    Also, when you cancel a query you are generally posed a question about whether discoverer must keep the last change but does not return any data. If you click Yes in response to this question is usually what triggers the compensation of the cache. Most of the time I just click No, even if I made a little change. I tend to get my quick return query.

    Finally, if your discoverer worksheet is a crosstab or use Page elements, or even both at the same time, it is one of the causes of a long-running query. In these scenarios, discoverer has buckets to calculate and he has no idea how many buckets to until he has read all the data.

    My Discoverer 10 g manual and in my training I speak on the motion of The Twilight Zone. These are queries than ever or never looks back all the data and either expire or must be stopped manually. Sometimes these runaway queries trying to return each row of data in the database, but more generally, they are caused by the use of overcasual of page elements or tables double entry.

    Let us hope that this logbook help
    Best wishes
    Michael

  • Rewrite the query without a clause EXISTS

    I would like to know another way to write the query without the EXISTS clause below. The main problem is with the inner query not allowing Java Hibernate to cache the results of the query.

    Select max (wt.wtime) wttme
    x wt.
    PIA,
    z g
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    x wt1.
    y v1,.
    z g1
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    z / / DESC;
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    GID NOT NULL NUMBER
    GNAME NOT NULL VARCHAR2 (100)
    ACTIVE NON-NULL CHAR (1)
    DATE OF UPDATE_DATE
    UPDATED_BY VARCHAR2 (50)

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    y / / DESC;
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    VID NOT NULL NUMBER
    VNAME NOT NULL VARCHAR2 (100)
    GID NOT NULL NUMBER
    ACTIVE NON-NULL CHAR (1)
    DATE OF UPDATE_DATE
    UPDATED_BY VARCHAR2 (50)

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    1 ICT 1 Y 6 July 09 14:50:24 Test
    arvato 2 1 O 6 July 09 14:50:24 Test

    / / DESC x;
    Name of Type Null
    VID NOT NULL NUMBER
    NUMBER OF WTIME
    ERROR VARCHAR2 (4000)
    NOT CLOSED NULL CHAR (1)
    LAST_UPDATED DATE

    VID WTIME LAST_UPDATED CLOSED ERROR
    1 65 N N 10 JUNE 09 00:00:00
    2 23 N N AUGUST 10 09 00:00:00

    Ken R says:
    What I would like to have is a query WITHOUT a clause EXISTS and to implement INSIDE logical query * (wt1.last_updated< (sysdate="" -="" .0013)="" or="" upper(wt1.error)='T' )*="" in="" the="" outer="">

    Well have a look at the two queries above then.

Maybe you are looking for

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