Too many queries on a table scan request complete

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  Hello

  I use Windows 7 (32-bit) with SP1.

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  (0xc0000234).

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  bcshekar

  Hi bcshekar,

  The question you have posted is related to the area and would be better suited to the net Tech community. Please visit the link below to find a community that will provide the support you want.
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• Oracle 11g with too many years of data in tables

  I have a facility with transactional tables that has records for many years. Queries on these tables are slow and I need to solve this problem in order to improve the speed of my application.

  I think deleting all records of the past five years, but it's going to be a very complex task. I heard an order to mark some records in a table like inmmutables so applications will treat them in a different way and then I won't need to delete anything.

  Anyone heard of this solution? What are the commands and steps to do?

  Thank you

  With the archiving of data, or any deletion of data, you can get a performance improvement, or you can't get any improvement.

  I heard an order to mark some records in a table like inmmutables so applications will treat them in a different way and then I won't need to delete anything.

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• 3 clues on 3 different columns, but explain plan shows full table scan for select queries

  I have a table - used and have index - functional ind1 (upper (f_name)), index - (emp_id) ind2 ind3 (upper (l_name) functional on 3 columns diffferent - what, emp_id, l_name respectively.) Now when I check explain plans for sub queries, they all have two shows complete table for the employee of the table scan. FYI - employee table is non-parittioned.

  Can someone tell me why 3 indices are not used here?

  (1) select emp_id, upper (f_name), upper (l_name) of the employee

  (2) select upper (f_name), mp_id, upper (l_name) of the employee

  where upper (f_name) = upper (f_name)

  and emp_id = emp_id

  and upper (l_name) = upper (l_name)

  If I can push oracle (version 11) to use these indexes somewho - maybe using tips? Any help is appreciated.

  
  Observations:
  
  SQL> desc emp1;
   Name                                      Null?    Type
   ----------------------------------------- -------- -----------------
   EMPID                                      NOT NULL NUMBER
   F_NAME                                    NOT NULL VARCHAR2(3)
   L_NAME                                    NOT NULL VARCHAR2(3)
   SALARY                                    NUMBER
   JOB_ROLE                                 VARCHAR2(5)
   DEPTID                                     NUMBER
  
  create index idx2 on emp1(empid);
  create index idx1 on emp1(upper(f_name) );
  create index idx3 on emp1(f_name,empid, l_name);
  exec dbms_stats.gather_table_stats(user,'EMP1', cascade=>true);
  
  8 rows selected.
  
  SQL> explain plan for
    2  select /*+ index_join(e idx1 idx2 idx3)*/   upper(l_name),empid, upper(f_name) from emp1 e;
  
  Explained.
  
  SQL> select * from table(dbms_xplan.display);
  
  PLAN_TABLE_OUTPUT
  --------------------------------------------------------------------------------
  Plan hash value: 3449967945
  
  -------------------------------------------------------------------------
  | Id  | Operation        | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  -------------------------------------------------------------------------
  |   0 | SELECT STATEMENT |      | 20000 |   175K|    14   (0)| 00:00:01 |
  |   1 |  INDEX FULL SCAN | IDX3 | 20000 |   175K|    14   (0)| 00:00:01 |
  -------------------------------------------------------------------------
  
  8 rows selected.
  
  SQL> explain plan for
    2  select    upper(f_name),empid,upper(l_name) from emp1 e;
  
  Explained.
  
  SQL> select * from table(dbms_xplan.display);
  
  PLAN_TABLE_OUTPUT
  --------------------------------------------------------------------------------
  Plan hash value: 3449967945
  
  -------------------------------------------------------------------------
  | Id  | Operation        | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  -------------------------------------------------------------------------
  |   0 | SELECT STATEMENT |      | 20000 |   175K|    14   (0)| 00:00:01 |
  |   1 |  INDEX FULL SCAN | IDX3 | 20000 |   175K|    14   (0)| 00:00:01 |
  -------------------------------------------------------------------------
  
  8 rows selected.
  
  SQL> explain plan for
    2  select /*+ index_ffs(e idx3)*/   upper(l_name),empid, upper(f_name) from emp1 e;
  
  Explained.
  
  SQL> select * from table(dbms_xplan.display);
  
  PLAN_TABLE_OUTPUT
  --------------------------------------------------------------------------------
  Plan hash value: 2496145112
  
  -----------------------------------------------------------------------------
  | Id  | Operation            | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  -----------------------------------------------------------------------------
  |   0 | SELECT STATEMENT     |      | 20000 |   175K|    14   (0)| 00:00:01 |
  |   1 |  INDEX FAST FULL SCAN| IDX3 | 20000 |   175K|    14   (0)| 00:00:01 |
  -----------------------------------------------------------------------------
  
  8 rows selected.
  
  SQL> explain plan for
    2  select /*+ index(e idx3)*/   upper(l_name),empid, upper(f_name) from emp1 e;
  
  Explained.
  
  SQL> select * from table(dbms_xplan.display);
  
  PLAN_TABLE_OUTPUT
  --------------------------------------------------------------------------------
  Plan hash value: 3449967945
  
  -------------------------------------------------------------------------
  | Id  | Operation        | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  -------------------------------------------------------------------------
  |   0 | SELECT STATEMENT |      | 20000 |   175K|    14   (0)| 00:00:01 |
  |   1 |  INDEX FULL SCAN | IDX3 | 20000 |   175K|    14   (0)| 00:00:01 |
  -------------------------------------------------------------------------
  
  8 rows selected.
  
  SQL> explain plan for
    2  select    upper(f_name),empid,upper(l_name) from emp1 e;
  
  Explained.
  
  SQL> select * from table(dbms_xplan.display);
  
  PLAN_TABLE_OUTPUT
  --------------------------------------------------------------------------------
  Plan hash value: 3449967945
  
  -------------------------------------------------------------------------
  | Id  | Operation        | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  -------------------------------------------------------------------------
  |   0 | SELECT STATEMENT |      | 20000 |   175K|    14   (0)| 00:00:01 |
  |   1 |  INDEX FULL SCAN | IDX3 | 20000 |   175K|    14   (0)| 00:00:01 |
  -------------------------------------------------------------------------
  
  8 rows selected.
  
  SQL> drop index idx3;
  
  Index dropped.
  
  SQL> explain plan for
    2     select   upper(l_name),empid, upper(f_name) from emp1 e;
  
  Explained.
  
  SQL> select * from table(dbms_xplan.display);
  
  PLAN_TABLE_OUTPUT
  --------------------------------------------------------------------------------
  Plan hash value: 3330885630
  
  --------------------------------------------------------------------------
  | Id  | Operation         | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  --------------------------------------------------------------------------
  |   0 | SELECT STATEMENT  |      | 20000 |   175K|    18   (0)| 00:00:01 |
  |   1 |  TABLE ACCESS FULL| EMP1 | 20000 |   175K|    18   (0)| 00:00:01 |
  --------------------------------------------------------------------------
  
  8 rows selected.
  
  SQL> create index idx3 on emp1(f_name,empid, l_name );
  
  Index created.
  
  SQL>  explain plan for
    2     select   upper(l_name),empid, upper(f_name) from emp1 e;
  
  Explained.
  
  SQL> select * from table(dbms_xplan.display);
  
  PLAN_TABLE_OUTPUT
  --------------------------------------------------------------------------------
  Plan hash value: 3449967945
  
  -------------------------------------------------------------------------
  | Id  | Operation        | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  -------------------------------------------------------------------------
  |   0 | SELECT STATEMENT |      | 20000 |   175K|    14   (0)| 00:00:01 |
  |   1 |  INDEX FULL SCAN | IDX3 | 20000 |   175K|    14   (0)| 00:00:01 |
  

• request done full table scan

  Hai all,
  
  10.2.0.4 on solaris 10
  
  

  SELECT sum(RechargeForPrepaid/10000), to_date(substr (TIMESTAMP, 1,8),'YYYY/MM/DD')
  FROM medt.crm_t  WHERE to_date(substr (TIMESTAMP, 1,8),'YYYY/MM/DD') >= trunc(sysdate)-1 and tradetype != '0' group by to_date(substr (TIMESTAMP, 1,8),'YYYY/MM/DD');

  The shows to explain that it performs a table full scan on crm_t. I created indexes on the column
  timestamp and tradetype too. collected stats too. but still, it makes a full table scan.
  
  
  Please guide
  
  Thank you
  Kai

  Obviously.

  The column is named incorrectly--> timestamp is a reserved word.
  It's also the wrong type--> dates should not be stored as varchar2.

  Also () =
  where is indexed
  always removes the index.

  The design of this table is a complete mess.
  Drop and redesign.

  You can yourself to hack and put an index of feature based on the expression, but the table will still be a disaster.
  I hope that this code does not belong to a commercial application.
  Me cry and me to hire a lawyer to sue the seller.

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

• Queries - full table scan

  Hello
  
  If I use the name like '% abc %' I still have full table scan. Is it possible to avoid it?
  
  I read on the full-text index:
  
  CTXCAT for the name fields
  context of the clob fields
  
  (1) is that correct or is at - it an easier option?
  
  2) is this correct that these indices should be rebuild when the data changes?
  
  Our database is 10.2.0.4, the above information is 11g docs
  
  Kind regards
  
  Nico
  
  Published by: S11 on May 5, 2011 14:55

  Histograms would be useless with a like '% something' value.

  Function of material you can complete analysis that a Gigabyte table in 30 seconds then how a problem is a complete analysis for a partial value. How many times is this going to be done.

  If the answer is high then you should probably use the Oracle text features.

  HTH - Mark D Powell.

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  Best regards

  This message is caused by the user requesting several password resets. PL see MOS Doc 875559.1 (how to claire too many pending requests for password reset)

  HTH
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• Scalability problems - too many Active Sessions?

  Hello
  
  I'm having a problem with an app that I built for one of the College campus, that I work. The application is a queue system where there are stations for students to access your room, admin stations where staff can see these students and "call", and displays outside every office employee that shows the student who was called. There are about 20 of the latter type of billboards. I have the following code in my footer to query the DB for most recent students called for a specific room:

  <script type="text/javascript">
  <!--
  var refresh_region = function( workstation_in, div_in ) {
      $.get(
          'wwv_flow.show', 
          {"p_request"      : 'APPLICATION_PROCESS=F_NEXT_STUDENT',
           "p_flow_id"      : $v('pFlowId'),      //app id
           "p_flow_step_id" : $v('pFlowStepId'),  //page id
           "p_instance"     : $v('pInstance'),    //session id
           "x01"            : workstation_in
          },
          function(data) {
              $(div_in).html(data);
          }
      );
      setTimeout(function() { refresh_region( workstation_in, div_in ) }, 5000);
  }
  
  refresh_region( '&P7_WORKSTATION_IN.', '#next_student_div' );
  //-->
  </script>

  The process of OnDemand, F_NEXT_STUDENT executes the query and returns the result:

  select a.FIRST_NAME || ' ' || a.LAST_NAME
  into   full_name
  from   ONESTOP_QUEUE a
  where  a.WORKSTATION_ID_CALLED = in_workstation_id
  and    a.STATUS = 'CALLED'
  and    a.QUEUE_ID = (
     select min( c.QUEUE_ID )
     from   ONESTOP_QUEUE c
     where  c.WORKSTATION_ID_CALLED = in_workstation_id
   and    c.STATUS = 'CALLED');

  However, when all these display panels is turned on (and I use the code as follows in the other pages for similar purposes) the application become slow and eventually unresponsive. As a first step, we have the application running a box with Oracle XE. Finally, we have migrated to a full blown installation 11g with APEX listener and GlassFish. My DBA said everything looks ok on the side of the DB, so I tried to dig into other areas to see where the bottleneck can be. After inspecting the report of Active Sessions in the APEX, I noticed that there are a ton of connections being generated (> 30 000). This is not a good thing for me and I try to understand what I am doing wrong.
  
  At first I used $. post() instead of $. get (). I was also using setInterval() instead of a setTimeout() loop. However, none of these changes really seem to help the situation. I am at a loss to know how else to improve the performance of this application. Any suggestions on what I can try?
  
  Most of the features of the app is on apex.oracle.com
  WORKSPACE: SCCC_TEST
  USER/PASS: TEST/test
  Direct URL to the page (I spend worksation ID): http://apex.oracle.com/pls/apex/f?p=65890:7:0:P7_WORKSTATION_IN:ADMISSIONS_1
  
  Thanks in advance for any help.

  Hello

  are you sure that each AJAX request generates a new APEX session? Because it is based on your downloaded app all right. You can check that by running the following query. It will also show you how long it took APEX to meet your demand for AJAX (elapsed_time). I think that the elapsed time will be the key to find out why your application becomes unresponsive if too many customers are returning. The goal should be that the AJAX request ends as soon as possible. For example 1 sec would be for many, because if you have 20 parallel AJAX requests at the same time, this could have an impact on your DB. You can share your average time?

  select apex_session_id, to_char(view_date, 'DD.MM.YYYY HH24:MI:SS') as view_date, elapsed_time, application_info
    from apex_workspace_activity_log
   where application_id = 65890
     and page_id = 7
     and view_date >= sysdate - 0.1
   order by 1, 2, 3
  

  I don't know how much data is stored in the ONESTOP_QUEUE table, but it may be useful to adjust your statement used in F_NEXT_STUDENT. On apex.oracle.com, the plan of the explain output shows at least he uses twice a scan interval on index ONESTOP_QUEUE_IDX. For inside MIN instruction it is well, but the external SQL should just do a search PK using QUEUE_ID. This is why I would like to delete

  a.WORKSTATION_ID_CALLED = in_workstation_id and a.STATUS = 'CALLED'
  

  to force the index seek PK using QUEUE_iD.

  I also suggest that you make your JavaScript code on the page 5 and 7 more transparent. He is currently hiding in the region or footer HTML. I would say to move JS code in the attributes of the page 'Function and Global Variable declaration' and ' run when Page Loads. BTW, there is no need to use $(document) .ready in "Run when the Page loads", because internally, we already use $(document) .ready.

  Or instead of using your own JavaScript code you can download the plugin http://www.oracle.com/technetwork/developer-tools/apex/application-express/apex-plug-ins-182042.html#dynamic "Timer" and use rather dynamic actions. On page 5 you can use the action "Refresh" to update your classic report and on page 7 you can use an action to "Set the value" to run your query. I think it would make your page easy to read for others.

  Concerning
  Patrick
  -----------
  My Blog: http://www.inside-oracle-apex.com
  APEX Plug-Ins: http://apex.oracle.com/plugins
  Twitter: http://www.twitter.com/patrickwolf

• A function in a subquery is call too many times.

  Hi all
  
  I am struggling to understand why a function in a subquery is called too many times.
  Let me explain with an example:
  

  create or replace function all_emp (v_deptno in number) 
  return varchar2
  as
  
  v_all_emp varchar2(2000);
  
  begin
  
      dbms_output.put_line ('function called');
  
      for i in (select * from emp where deptno = v_deptno) loop
  
          v_all_emp := v_all_emp || i.ename || '; ';
      
      end loop;
  
  return v_all_emp;
      
  end;
  /
  
  -- running just the subquery, calls the function all_emp only 4 times (once for each row in table dept)
  select 
      d.deptno,
      d.dname,
      all_emp(d.deptno) f_all_emp
      from dept d;
  
  -- running the whole query, using regexp to split the value of f_all_emp into separate fields, causes that function all_emp is called 28 times, thus 6 times for each row!!
  select tmp.*,
  regexp_substr(f_all_emp,'[^;]*',1,1) emp1,
  regexp_substr(f_all_emp,'[^;]*',1,3) emp2,
  regexp_substr(f_all_emp,'[^;]*',1,5) emp3,
  regexp_substr(f_all_emp,'[^;]*',1,7) emp4,
  regexp_substr(f_all_emp,'[^;]*',1,9) emp5,
  regexp_substr(f_all_emp,'[^;]*',1,11) emp6
  from
      (select 
      d.deptno,
      d.dname,
      all_emp(d.deptno) f_all_emp
      from dept d) tmp
  ;

  I do not understand why Oracle calls my 28 times function in this example, 4 times should be sufficient.
  
  Is there a way to force that the subquery is materialized first?
  
  A reminder of the facts:
  Above function / request is of course a simple example.
  In fact, I have a rather complex function, integrating in a subquery.
  The subquery is already slow (2 min) to run, but when I want to share the result of the function in several areas (about 20) it's over an hour due to above described behavior.

  Optimizer merges online view and the query results in:

  select  d.deptno,
          d.dname,
          all_emp(d.deptno) f_all_emp
          regexp_substr(all_emp(d.deptno),'[^;]*',1,1) emp1,
          regexp_substr(all_emp(d.deptno),'[^;]*',1,3) emp2,
          regexp_substr(all_emp(d.deptno),'[^;]*',1,5) emp3,
          regexp_substr(all_emp(d.deptno),'[^;]*',1,7) emp4,
          regexp_substr(all_emp(d.deptno),'[^;]*',1,9) emp5,
          regexp_substr(all_emp(d.deptno),'[^;]*',1,11) emp6
    from  dept d
  /
  

  That's why function is called 28 times. Seen go explain plan:

  SQL> explain plan for
    2  select tmp.*,
    3          regexp_substr(f_all_emp,'[^;]*',1,1) emp1,
    4          regexp_substr(f_all_emp,'[^;]*',1,3) emp2,
    5          regexp_substr(f_all_emp,'[^;]*',1,5) emp3,
    6          regexp_substr(f_all_emp,'[^;]*',1,7) emp4,
    7          regexp_substr(f_all_emp,'[^;]*',1,9) emp5,
    8          regexp_substr(f_all_emp,'[^;]*',1,11) emp6
    9    from  (
   10           select  d.deptno,
   11                   d.dname,
   12                   all_emp(d.deptno) f_all_emp
   13             from  dept d
   14          ) tmp
   15  /
  
  Explained.
  
  SQL> @?\rdbms\admin\utlxpls
  
  PLAN_TABLE_OUTPUT
  --------------------------------------------------------------------------
  Plan hash value: 3383998547
  
  --------------------------------------------------------------------------
  | Id  | Operation         | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  --------------------------------------------------------------------------
  |   0 | SELECT STATEMENT  |      |     4 |    52 |     3   (0)| 00:00:01 |
  |   1 |  TABLE ACCESS FULL| DEPT |     4 |    52 |     3   (0)| 00:00:01 |
  --------------------------------------------------------------------------
  
  8 rows selected.
  
  SQL>  
  

  If we use the NO_MERGE indicator:

  SQL> select  /*+ NO_MERGE(tmp) */
    2          tmp.*,
    3          regexp_substr(f_all_emp,'[^;]*',1,1) emp1,
    4          regexp_substr(f_all_emp,'[^;]*',1,3) emp2,
    5          regexp_substr(f_all_emp,'[^;]*',1,5) emp3,
    6          regexp_substr(f_all_emp,'[^;]*',1,7) emp4,
    7          regexp_substr(f_all_emp,'[^;]*',1,9) emp5,
    8          regexp_substr(f_all_emp,'[^;]*',1,11) emp6
    9    from  (
   10           select  d.deptno,
   11                   d.dname,
   12                   all_emp(d.deptno) f_all_emp
   13             from  dept d
   14          ) tmp
   15  /
  
      DEPTNO DNAME          F_ALL_EMP  EMP1       EMP2       EMP3       EMP4       EMP5       EMP6
  ---------- -------------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
          10 ACCOUNTING     CLARK; KIN CLARK       KING       MILLER
                            G; MILLER;
  
          20 RESEARCH       SMITH; JON SMITH       JONES      SCOTT      ADAMS      FORD
                            ES; SCOTT;
                             ADAMS; FO
                            RD;
  
          30 SALES          ALLEN; WAR ALLEN       WARD       MARTIN     BLAKE      TURNER     JAMES
                            D; MARTIN;
  
      DEPTNO DNAME          F_ALL_EMP  EMP1       EMP2       EMP3       EMP4       EMP5       EMP6
  ---------- -------------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
                             BLAKE; TU
                            RNER; JAME
                            S;
  
          40 OPERATIONS
  
  function called
  function called
  function called
  function called
  function called
  function called
  SQL> explain plan for
    2  select  /*+ NO_MERGE(tmp) */
    3          tmp.*,
    4          regexp_substr(f_all_emp,'[^;]*',1,1) emp1,
    5          regexp_substr(f_all_emp,'[^;]*',1,3) emp2,
    6          regexp_substr(f_all_emp,'[^;]*',1,5) emp3,
    7          regexp_substr(f_all_emp,'[^;]*',1,7) emp4,
    8          regexp_substr(f_all_emp,'[^;]*',1,9) emp5,
    9          regexp_substr(f_all_emp,'[^;]*',1,11) emp6
   10    from  (
   11           select  d.deptno,
   12                   d.dname,
   13                   all_emp(d.deptno) f_all_emp
   14             from  dept d
   15          ) tmp
   16  /
  
  Explained.
  
  SQL> @?\rdbms\admin\utlxpls
  
  PLAN_TABLE_OUTPUT
  ------------------------------------------------------------------------------------------------------
  Plan hash value: 2317111044
  
  ---------------------------------------------------------------------------
  | Id  | Operation          | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  ---------------------------------------------------------------------------
  |   0 | SELECT STATEMENT   |      |     4 |  8096 |     3   (0)| 00:00:01 |
  |   1 |  VIEW              |      |     4 |  8096 |     3   (0)| 00:00:01 |
  |   2 |   TABLE ACCESS FULL| DEPT |     4 |    52 |     3   (0)| 00:00:01 |
  ---------------------------------------------------------------------------
  
  9 rows selected.
  
  SQL> 
  

  Not sure why the function is executed once 6 and not 4. What we really want, is to materialize reviews online:

  SQL> with tmp as (
    2               select  /*+ materialize */
    3                       d.deptno,
    4                       d.dname,
    5                       all_emp(d.deptno) f_all_emp
    6                 from  dept d
    7              )
    8  select  tmp.*,
    9          regexp_substr(f_all_emp,'[^;]*',1,1) emp1,
   10          regexp_substr(f_all_emp,'[^;]*',1,3) emp2,
   11          regexp_substr(f_all_emp,'[^;]*',1,5) emp3,
   12          regexp_substr(f_all_emp,'[^;]*',1,7) emp4,
   13          regexp_substr(f_all_emp,'[^;]*',1,9) emp5,
   14          regexp_substr(f_all_emp,'[^;]*',1,11) emp6
   15    from  tmp
   16  /
  
      DEPTNO DNAME          F_ALL_EMP  EMP1       EMP2       EMP3       EMP4       EMP5       EMP6
  ---------- -------------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
          10 ACCOUNTING     CLARK; KIN CLARK       KING       MILLER
                            G; MILLER;
  
          20 RESEARCH       SMITH; JON SMITH       JONES      SCOTT      ADAMS      FORD
                            ES; SCOTT;
                             ADAMS; FO
                            RD;
  
          30 SALES          ALLEN; WAR ALLEN       WARD       MARTIN     BLAKE      TURNER     JAMES
                            D; MARTIN;
  
      DEPTNO DNAME          F_ALL_EMP  EMP1       EMP2       EMP3       EMP4       EMP5       EMP6
  ---------- -------------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
                             BLAKE; TU
                            RNER; JAME
                            S;
  
          40 OPERATIONS
  
  function called
  function called
  function called
  function called
  SQL> explain plan for
    2  with tmp as (
    3               select  /*+ materialize */
    4                       d.deptno,
    5                       d.dname,
    6                       all_emp(d.deptno) f_all_emp
    7                 from  dept d
    8              )
    9  select  tmp.*,
   10          regexp_substr(f_all_emp,'[^;]*',1,1) emp1,
   11          regexp_substr(f_all_emp,'[^;]*',1,3) emp2,
   12          regexp_substr(f_all_emp,'[^;]*',1,5) emp3,
   13          regexp_substr(f_all_emp,'[^;]*',1,7) emp4,
   14          regexp_substr(f_all_emp,'[^;]*',1,9) emp5,
   15          regexp_substr(f_all_emp,'[^;]*',1,11) emp6
   16    from  tmp
   17  /
  
  Explained.
  
  SQL> @?\rdbms\admin\utlxpls
  
  PLAN_TABLE_OUTPUT
  -----------------------------------------------------------------------------------------------------------------------
  Plan hash value: 634594723
  
  ---------------------------------------------------------------------------------------------------------
  | Id  | Operation                  | Name                       | Rows  | Bytes | Cost (%CPU)| Time     |
  ---------------------------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT           |                            |     4 |  8096 |     5   (0)| 00:00:01 |
  |   1 |  TEMP TABLE TRANSFORMATION |                            |       |       |            |          |
  |   2 |   LOAD AS SELECT           |                            |       |       |            |          |
  |   3 |    TABLE ACCESS FULL       | DEPT                       |     4 |    52 |     3   (0)| 00:00:01 |
  |   4 |   VIEW                     |                            |     4 |  8096 |     2   (0)| 00:00:01 |
  |   5 |    TABLE ACCESS FULL       | SYS_TEMP_0FD9D6603_20255AE |     4 |    52 |     2   (0)| 00:00:01 |
  
  PLAN_TABLE_OUTPUT
  -----------------------------------------------------------------------------------------------------------------------
  ---------------------------------------------------------------------------------------------------------
  
  12 rows selected.
  
  SQL> 
  

  However, suspicion of MATERIALIZATION is a hint of undocumented.

  SY.

• too many return values for a single node

  I have a table with two columns
  
  the table structure
  ----------------------
  string school_name type
  xmltype obj_xml
  
  Row1
  ----------
  abc_school,
  < student >
  < student >
  < id > 101 / < ID >
  < teacher > CBA < / teacher >
  < / student >
  < student >
  < id > 102 / < ID >
  XYZ < teacher > < / teacher >
  ONP < teacher > < / teacher >
  RSM < teacher > < / teacher >
  < / student >
  < / students >
  
  row2
  -----------
  def_school,
  < student >
  < student >
  < id > 301 / < ID >
  pqr < teacher > < / teacher >
  < / student >
  < student >
  < id > 302 / < ID >
  XYZ < teacher > < / teacher >
  < / student >
  < / students >
  
  
  is it possible to display data in the format using a query oracle below.
  ---------------------------------------------------------------------------------------------------
  teacher id school_name
  --------------------- ------- ------------
  abc_school 101 abc
  abc_school 102 xyz
  abc_school 102 onp
  RSM abc_school 102
  
  
  I used the slot request, throwing an error - too many return values for a single node
  
  SELECT school_name, teacher
  ExtractValue (value (x), ' / / key ') like student_id
  extractValue (value (x), ' / / value ') AS teacher
  SCHOOL t,.
  TABLE)
  XMLSequence (extract (obj_xml, ' / students/pupils '))
  ) x
  
  Please post How can I modify this query, the teacher tags may vary for each student
  
  Published by: user7955917 on May 8, 2012 04:00

  As mentioned in your other thread today, it would be helpful if you could post your exact version of db.
  Samples of work would be appreciated too, the XML data, you gave are not correct.

  I would do it with two XMLTables, like this:

  SQL> SELECT school_name
    2       , x1.id
    3       , x2.teacher
    4  FROM school t
    5     , XMLTable('/students/student'
    6         passing t.obj_xml
    7         columns id       number   path 'id'
    8               , teachers xmltype  path 'teacher'
    9       ) x1
   10     , XMLTable('/teacher'
   11         passing x1.teachers
   12         columns teacher  varchar2(30) path '.'
   13       ) x2
   14  ;
  
  SCHOOL_NAME                            ID TEACHER
  ------------------------------ ---------- ------------------------------
  abc_school                            101 abc
  abc_school                            102 xyz
  abc_school                            102 onp
  abc_school                            102 rsm
  def_school                            301 pqr
  def_school                            302 xyz
  
  6 rows selected
   
  

• On sending a message, the server sent a wrong message: #4.4.5. too many connections to the host

  On sending a message, an error has occurred "the mail server has sent a wrong message: #4.4.5 too many connections to this host..."
  The mail is displayed as sent in envoys, but is not received by the recipient. On sending several messages to test myself this fault seems to be intermittent.

  Hmm did you get mail outbound scanning performed by an anti virus program? Turn the power off.

  Have the e-mail account on your phone? try turning off your phone.

  Is the IMAP or POP account?

• Why firefox causes 429 block too many applications on the Vimeo site?

  When I try to visit vimeo.com with Firefox (version 37.0) I get a message block server called 429 too many requests. However, I can then use another browser (Konqueror - provided with my Fedora KDE plasma system [fc21]) to access the site without problem.
  I tried to clear the cookies and the cache of Firefox and running in safe mode with all add-ons disabled, but he always brings the 429 error message.
  I'm puzzled. Any advice?

  You can delete all data stored in Firefox with a specific area through "Forget this Site" in the context menu of a history entry ("" history > view history "or" view > sidebar > History "") or via the subject: permissions page.

  Using "Forget this Site" will delete all data stored in Firefox in this area as bookmarks, cookies, words of past, cache, history, and exceptions, so be careful and if you have a password or other data from that domain you don't want to lose then check that back up these data or make a comment.

  You can't recover from this "forget" unless you have a backup of the files involved.

  It has no lasting effect, so if come back you on such a 'forgotten' site, then the data of this Web site will be saved once more.

  Create a new profile as a test to see if your profile is the source of the problem.

  See "create a profile":

  • https://support.Mozilla.org/KB/Profile-Manager-create-and-remove-Firefox-profiles
  • http://KB.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

  If the new profile works then you can transfer files from a profile already used in the new profile, but be careful not to copy files corrupted to avoid transporting more problems.

  • http://KB.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

• FF slow loading, maybe because of too many that add ons. those who know turn off? Thank you.

  FF was loading very slow for me lately, and I think that may be too many Add ons, but I don't know which ones is necessary and those that are not. Thanks for any advice.

  This has happened

  Each time Firefox opened

  Is a few weeks ago.

  The images are of your plugins and you have only 13 of the images, but you have either deleted or disabled some of them as only 10 are in plug-ins installed at the bottom of your post. not a large number.

  What your extensions?

  There may be many reasons for any slow application at startup. Without more information, or to be in front of your system, it is difficult to diagnose. 2 suggestions below.

  Firefox Safe Mode
  You may need to use questions Troubleshoot Firefox in Safe Mode (click on "Safe Mode" and reading) to locate the problem. Firefox Safe mode is a diagnostic mode that disables Extensions and some other features of Firefox. If you are using a theme, place you in the DEFAULT theme: Tools > Modules > Themes before start Safe Mode. When you enter Safe Mode, do not check all the items in the window, just click "continue mode without failure." A test to see if the problem you are experiencing is fixed.

  See:
  Troubleshoot extensions, themes, and issues of hardware acceleration to resolve common problems of Firefox
  Solve problems with plugins like Flash or Java to solve the common problems of Firefox
  Troubleshoot and diagnose problems in Firefox

  If the problem does not occur in mode without failure, then disable all your Extensions and Plug-ins, and then try to find out who is causing by allowing both the problem reappears. You MUST close and restart Firefox after EACH change via file > restart Firefox (on Mac: Firefox > Quit). You can use 'Disable all add-ons' on the start safe mode window.

  Malware scan
  Install, update and run these programs in this order. They are provided free for personal use, but some have limited functionality in "free" mode, but those are features that you don't really need to find and eliminate the problem that you have. (Not all programs detect the malware even.)

  Malwarebytes' Anti-Malware - http://www.malwarebytes.org/mbam.php
  SuperAntispyware - http://www.superantispyware.com/
  AdAware - http://www.lavasoftusa.com/software/adaware/
  Spybot Search & Destroy - http://www.safer-networking.org/en/index.html
  Windows Defender - http://www.microsoft.com/windows/products/winfamily/defender/default.mspx
  Dr Web Cureit - http://www.freedrweb.com/cureit/

  If they can't find it or cannot delete it, post in one of these forums using specialized malware removal:
  http://bleepingcomputer.com
  http://www.spywareinfoforum.com/
  http://www.spywarewarrior.com/index.php
  http://Forum.aumha.org/

• My Email is blocked... Somone tried too many passwords...

  My email is blocked someone tried too many passwords. I have tried to reset for the last 8 months through your site but could not get a solution. Most of the information I entered in 2000 I forgot. Can you please help me. I have a few important photos and copies of property documents attached to this email, I need to recover. Help, please.

  You did not bother to tell what email client you use. In any case, if it's Windows Live Mail or Hotmail:

  Submit all Live and Hotmail queries on the forum right here:

  Windows Live Solution Center
  http://windowslivehelp.com/