Similar Questions

• Global and local index with respect to table partitioned

  Hello
  I am very confused about local and global index in a partitioned table.
  In addition, local index can be partitioned and unpartitioned.
  In addition, what is the difference between global partitioned and unpartitioned
  the index?
  
  As far as I know,
  If there is local index then there will be as many partitions as the partition table
  and local parition will index contains the index of only the lines of their corresponding scores.
  In addition, the local index maintananence is easier because drop us or create a partition, only index corresponding partition is affected then that in the case of the overall index,
  If we create a new partition of the table, to rebuild the global index.
  Am I wrong?
  
  Concerning

  Hello

  This means that when you add/drop/split/merge table any partition (maintaiance) lying below, its corresponding partition in index is automatically added/deleted/split/merged. Oracle takes care of it internally without user intervention.

  Concerning
  Anurag

• Table partition and no partition indexes

  Hello
  
  I have the partition table that contains about 1 ml recods and he have daily score.
  This partition table have only a unique index that is a partition No.
  
  CREATE UNIQUE INDEX xxxxxx WE yyyyyy
  (ITEM_GUID, IMAGE_SIDE)
  LOGGING
  TABLESPACE zzzzzz
  PCTFREE 10
  INITRANS 2
  MAXTRANS 255
  STORAGE)
  INITIAL 170M
  ACCORDING TO 1 M
  MINEXTENTS 1
  MAXEXTENTS 2147483645
  PCTINCREASE 0
  DEFAULT USER_TABLES
  )
  NOPARALLEL;
  
  I drop very first partition of
  
  Fall of ALTER TABLE wwww.yyyyy SCORE PT_20080706;
  
  But this isn't my unique INVALID index.
  
  Is it normal to have a VALID unique index after the fall of any partition?
  
  Do I have to rebuild a unique index again?
  
  DB: oracle 10.2.0.3
  platform: solaris
  
  Thanks in advance

  According to the Oracle doc, if you drop the bulkhead with an overall index,.

  All index global, or all partitions of global partitioned indexes are marked UNUSABLE unless one of the following are true:

  You specify the UPDATE INDEX (cannot be specified for tables organized by index. Use GLOBAL updating INDEXES.)

  The dropped partition or its subparts are empty

  more info here
  http://download.Oracle.com/docs/CD/B19306_01/server.102/b14231/partiti.htm#sthref2751

  Check ALL_PART_INDEXES and ALL_INDEXES to check the State of your indexes.

• deletion of a partitioned index

  Hi friends,

  I use 10.2.0.4 oracle on solaris.

  I have several partitioned index with the 2011 created on a daily basis. I tried to drop one of the indexes and got the below error.

  SQL > ALTER INDEX QOSDEV. PK_RATE_CISCOMEMORYPOOL DROP PARTITION 'OCTOBER 5, 2012 '.

  ALTER INDEX QOSDEV. PK_RATE_CISMEPOOL DROP PARTITION 'OCTOBER 5, 2012 '.

  Error on line 2

  ORA-14076: submitted alter index partition/subpartition operation is not valid for local partitioned indexes

  Script done on line 2.

  I ask you how to remove these partitions.

  Thank you

  DBApps

  Hello

  Try-

  ALTER drop partition table RATE_CISCOMEMORYPOOL 'October 5, 2012;

  Anand

• Partitioned index

  Using Oracle 11.2.0.3
  
  We are evalauating partitiong stragetegies with a view to the realization of gains from perfomnace in reports in particular.
  
  How effeicient are partitioned indexes in this by example anti-terrorism just partitioned index aan table is not partitioned.
  
  One big fact to durrogate keys that have bitmpa indxese table which link to accentuate associated key dimensions.
  
  Patitioning given bitmap index which links to the largest dimension and partitiong Kay dimesnion dimension laregts.
  
  Reflections on partitioned indexes would be particularly useful.
  
  Thank you

  user5716448 wrote:
  Using Oracle 11.2.0.3

  We are evalauating partitiong stragetegies with a view to the realization of gains from perfomnace in reports in particular.

  How effeicient are partitioned indexes in this by example anti-terrorism just partitioned index aan table is not partitioned.

  One big fact to durrogate keys that have bitmpa indxese table which link to accentuate associated key dimensions.

  Patitioning given bitmap index which links to the largest dimension and partitiong Kay dimesnion dimension laregts.

  Reflections on partitioned indexes would be particularly useful.

  Thank you

  It is not possible to create a partitioned index bitmp on a non-partitioned table. Bitmap indexes can be local partitioned only.
  --
  John Watson
  Oracle Certified Master s/n
  http://skillbuilders.com

• Local partitioned indexes

  Hi all
  
  I created 2 local partitioned index. The indexes are indexes of function. the table size is 2.3 T.
  I created the first clue that it took 14 hours to create, and even to analyze and it works fine now. Then, I created second index. But now it does not.
  What should I do?
  
  version 11.1.0.6
  RAC, ASM
  
  Thanks in advance
  
  Published by: disaster on April 10, 2011 21:43
  
  Published by: disaster on April 10, 2011 21:51

  Dear Sir

  ----------------------------------------------------------------------------------------------------------
  | Id  | Operation              | Name         | Starts | E-Rows | A-Rows |   A-Time   | Buffers | Reads  |
  ----------------------------------------------------------------------------------------------------------
  |   1 |  PARTITION RANGE SINGLE|              |      1 |      1 |     82 |00:03:37.92 |     534K|    534K|
  |*  2 |   TABLE ACCESS FULL    | TBL          |      1 |      1 |     82 |00:03:37.92 |     534K|    534K|
  ----------------------------------------------------------------------------------------------------------
  

  It is the plan of the real explanation followed by the SQL engine to run your query

  The Oracle optimizer is the estimate (based on the statistics that you have collected about index and table) that your query will return only 1 rank (E-lines = 1) while in reality (when the query has been executed) it's return of 82 lines (A-Rows = 82) within 3 minutes and 37 seconds (A-Time = 00:03:37.92)

  It is clear that your index function that is not used.

  You should be aware that when you create a function based index, oracle will create a virtual column that is hidden behind the scene.

  Try to gather statistics on this column using dbms_stats.

  Please, try first to TEST

  BEGIN
     DBMS_STATS.gather_table_stats
                   (ownname             => user,
                    tabname             => 'TBL',
                    CASCADE             => TRUE,
                    method_opt         => 'FOR ALL HIDDEN COLUMNS SIZE 1'
                           );
  END;
  /
  

  and re - run your query and post once again the new plan explain him like you did before

  Best regards

  Mohamed Houri

• Global partitioned index hash

  Is it possible to create an index of global partitioned hash on the columns of the primary key of a table that is not partitioned itself?
  If a table has a PK constraint there an index generated automatically on the PK columns.
  Y at - it a syntax to make the overall index partitioned hash when creating the constraint of PK,.
  or syntax to MODIFY the indexes after the creation of the constraint?

  When you add a Pk to a table, you can choose a place already in the index. Something like

  alter table t1 add constraint T_PK primary key (col1) using index T_IDX;
  

  Create the partitioned index as you like with the same columns as the primary key and use the foregoing.

• ORA-14086: a partitioned index cannot be reconstructed as a whole

  Hello
  
  I'm trying to rebuld index had error below.
  
  SQL > alter index rms12. PRICE_HIST_I1 regeneration;
  ALTER index rms12. PRICE_HIST_I1 rebuild
  *
  ERROR on line 1:
  ORA-14086: a partitioned index cannot be reconstructed as a whole
  
  Select index_name, separated from dba_indexes where table_name = 'PRICE_HIST '.
  
  o/p
  
  Index_name partitioned
  
  PRICE_HIST_I2 YES
  PRICE_HIST_I1 YES
  
  Thank you

  If you need to find the names of partition in dba_ind_paritions.

  ------
  Sybrand Bakker
  Senior Oracle DBA

• spatial index and normal index

  Hi space specialists,.

  I have a question for spatial index performance and how Oracle manages queries that have a space and regular condition combined. We are on the Oracle 10 g Enterprise Edition Release 10.2.0.4.0 database

  Take a query like this one (not a real query but based on the type of query that is generated by ArcGIS):

  Select objectid

  attribute

  geometry

  table

  where mdsys.sdo_filter (geometry, mdsys.sdo_geometry (: gtype1,: srid1, null,: elem_info1,: ordinates1), 'querytype = window') = 'TRUE '.

  and attribute = value

  In our scenario, we have a lot of rows in the table (2 million), but we have only a few lines (2000) where attribute = value.

  It seems that there is a scenario where the performance is really bad. It takes 5 seconds for the query to return the results and you're just too slow for our needs. There is a spatial index on a geometry and a normal index on the field for the attribute. The plan of the explain command shows that both the spatial index and the index of the attribute are used.

  Of course, we can break to the top of the table in separate tables by object type. This would make the index space datamodel much more efficient, but at the expense of our current simple, abstract.

  Do you have suggestions on how we can improve performance without too much impact on our datamodel? Oracle for example has an option where you can create a spatial index on a subset of the data in a table?

  Thank you!

  Rob

  Do not know whether or not the following works for your case:

  use the column range-key attribute to create a partitioned table Beach and then create a local spatial index.

• Local and Global Index confusion...

  Hi all

  Oracle Database 10 g Enterprise Edition Release 10.2.0.3.0 - 64 bit

  I have a partitioned table, when developing the application, they have committed an index ON this table. Previously, whenever we use to run 'Alter Table add partition..' global index becomes unusable and I used to rebuild the same. But in recent months, each time we add partition (Alter Table... ADD Partition..) on this table, index will get unusable to stat instead it shows that indexes THE data dictionaries (Lacality = Local in USER_PART_INDEXES). Partitioned indexes are also automatically created with each table partition creation.

  But the query below shows the output indexes are GLOBAL.

  Select double dbms_metadata.get_ddl('INDEX','ABCD','USER_A');

  Can someone me help on what actually happened here.

  But the example above has the keyword LOCAL?

  CREATING INDEX 'SEB '. "" CDRV_I1 ""SEBS ". "" CDRV ' ('CDRV_CURNT_FL', 'IND_LAST_VERSN', 'GMT_SEIZ_DT_TIME', 'CLECT_ZONE', 'CALL_ID',

  "SWTCH_ADMIN_ABBR")

  PCTFREE, INITRANS 10 2 MAXTRANS 255 LOGGING

  STORAGE (INITIAL 10485760 NEXT 10485760 MINEXTENTS 2 MAXEXTENTS 2147483645)

  PCTINCREASE 0 DEFAULT USER_TABLES)

  "SEBS_CDRV_TAB" of LOCAL TABLESPACE

  (PARTITION "CDRV_HISTORIC"

  PCTFREE, INITRANS 10 2 MAXTRANS 255

  STORAGE (INITIAL 10485760 NEXT 10485760 MINEXTENTS 2 MAXEXTENTS 2147483645)

  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 DEFAULT USER_TABLES)

  TABLESPACE "SEBS_CDRV_TAB."

  If it looks like a duck and quacks like a duck, it is very probably a duck (or the local index)

  See you soon

  Richard Foote

  http://richardfoote.WordPress.com/

• problem with coordinates and child index

  

  Hi guys,.

  In my application I view contacts as card according to the image, so, for example, if the user clicks "Contact 2" he should come to "communicate with 3" position and "Touch 3" should return to "Contact 2" s.

  I've been swapping coordinated and child index of these sprites, but it didn't work like I wanted...

  can someone suggest a better logic?

  Thanks in advance

  Hi guys,.

  I solved it myself, silly me!

  All I had to do was:

  1. move the child 'index' to numChildren - 1

  2. move the numChildren child - 2 to "index".

  Phew!!!!!!!!!!!!!!!!

• B - Tree and explanation Index Bitmap

  Hi gurus

  I am trying to absorb the notion of bitmap index and b-tree, but unable to grasp the concept, so far, I have learned the following:

  Index B-Tree

  Use in the OLTP environment

  It is customary for these types of columns where you have more unique value or we can say that high cardinality

  It occupies less storage

  Using the corresponding model and ranges

  By default, Oracle uses tree indexing

  Bitmap index

  Use in home environment/OLAP data items

  It is customary for these types of columns where repeated values exist or we can say that low cardinality, example are male and female

  It seems that these points of difference between the two indexes. I really appreciate if someone give me more explanation on these subjects.

  Thanks in advance

  Concerning

  Muzz

  I am trying to absorb the concept index bitmap and tree but unable to grasp the concept,

  Then the FIRST place to look is the Oracle documentation; specifically the chapter "Index and Index-Organized Tables" chapter of the Concepts doc.

  http://docs.Oracle.com/CD/E25054_01/server.1111/e25789/indexiot.htm

  3 indices and Index of Tables

  This chapter deals with indices, which are schema objects that can speed up access to the lines of the table and organized index of tables, which are tables stored in an index structure.

  This chapter contains the following sections:

  • Overview of index
  • Overview of the Tables organized by Index

  This chapter has a lot of basic information on ALL the various types of indexes.

  so far, I've learned the following:

  Where, exactly, 'have you' who? Most of it is wrong, incomplete or distorted.

  Index B-Tree

  Use in the OLTP environment

  Index B-Tree, by default, are used in all environments.

  It is customary for these types of columns where you have more unique value or we can say that high cardinality

  They can be used for a cardinality. True - a unique column index is most commonly used for high-cardinality columns. But Oracle may also use an index column, simple or composite, when the data being sought is ENTIRELY contained in one or more indexes, low cardinality.

  It occupies less storage

  Maybe, maybe not. It is based on the column being indexed, the size of the key values and the cardinality of the key values. For your example "Male and female" there will be only THREE index entries: male, female and null. And each entry is simply a list of ranges of ROWID. This index can be orders of magnitude smaller than the equivalent B-Tree index.

  Using the corresponding model and ranges

  For the most part correct - although the range queries can be used with the bitmap index which is not a common use.

  By default, Oracle uses tree indexing

  Fix.

  Bitmap index

  Use in home environment/OLAP data items

  Especially correct - DML on tables with the bitmap index can cause severe performance and throughput problems. The distinction is therefore between environments with medium/high DML on a table compared to the weak or nonexistent DML on a table.

  So rather than a distinction between environments (OLAP and warehouse) the distinction is no longer between the TABLES (high/medium DML versus LOW/NO DML). There is nothing wrong at all with the help of the index of the bitmap in an OLAP environment - but these indices should be limited to the tables with low, or no, DML.

  It is customary for these types of columns where repeated values exist or we can say that low cardinality, example are male and female

  Yes and no.

  Yes - a bitmap index is not really appropriate, if there is NO repeat value.

  No - part II (low cardinality). The attribute MAJOR missing from what you have posted is that bitmap indexes are ALMOST always used in conjunction with others (usually a bitmap) index.

  If one, or more, high cardinality bitmap index can be used VERY effectively together to identify a set of rows to a query.

  See my multiple responses in this thread

  https://community.oracle.com/message/10219613?

  One of my answers presents, in detail, just how many attributes can be combined using several bitmap on both high columns index and low cardinality.

  In a later response, I provide the actual sample code and display the execution plan indicating how Oracle just that.

  SQL> set serveroutput on
SQL> set autotrace on explain
SQL> select rowid from star_fact where
  2   (state = 'CA') or (state = 'CO')
  3  and (age = 'young') and (marital_status = 'divorced')
  4  and (((summer_sport = 'baseball') and (softdrink = 'pepsi'))
  5  or ((summer_sport = 'golf') and (beer = 'coors')));


  Read the full thread.

• removed and replaced index page old index is always on the web

  removed and replaced index page old index is always on the web. I just after a new website, but BusinessCatalyst blinking an error message to fast as follows by saying I can't. I thought Muse for coders and technicians.

  Steven,

  The page could be cached in other places, such as cache network or your internet provider.  These are rare cases, but they happen, and you have no control over it.  Best to have friends / colleagues check from another place, this page has been replaced by fact.  If you have several locations showing the same old page, which means the page was either not removed properly, or home page of the site is perhaps used a different directory than where you are currently working.  It is common for people to create several directories test when booting with web creation programs and forget the one that serves content for the online site.

• BTREE and Bitmap indexes

  How the Btree and Bitmap index works?

  Osama_mustafa wrote:
  If you google it you will find some topics/article talking about this.

  Refer to this:
  Index bitmap:
  http://www.DBA-Oracle.com/oracle_tips_bitmapped_indexes.htm

  BTREE index
  http://www.DBA-Oracle.com/t_garmany_easysql_btree_index.htm

  Better not to refer to one of these items, they contain too many errors.
  If textbooks are not good enough, then the best source of information indexing is Richard Foote's blog.

  (Or add "Richard Foote" for your research, you do it for the b-tree or bitmap index.

  Concerning
  Jonathan Lewis

• overlap of 2 controls and z index control at run time

  I would like to have a box and place a drop-down list in the same place that one is on the other and z index and development of control at run time. Dreamweave has this behavior to create?

  Your information and help is much appreciated,

  Kind regards

  Iccsi,

  Hello Iccsi,

  you think of something like this:

  
  
  
  

  
  

  first
   

  
      D: 2
   
  
    second: text text text text text...
  Text text
  Text text text
  Text text text text
  Text text text text text text text
  Text text text text text text text
  Text text
  Text text text text text text
  Text text text text text text

  
  

  Hans-Günter