Partitioned Tables and indexes

Similar Questions

• partion tables and indexes

  Hi all
  
  DB: 10.2.0.4
  
  Is that we can convert a normal table into partitioned tables?
  If Yes, then what is the existing indexes on this table?
  
  IM totally new about partitioning (Table and Index). I read the oracle docs but still have confusion with local and global index (score and no-partion)...
  
  
  Please suggest...
  
  Kind regards.

  >
  Is that we can convert a normal table into partitioned tables?
  If Yes, then what is the existing indexes on this table?
  >
  You can use the EXCHANGE PARTITION to do. See this article from the Oracle base
  Partitioning of an existing Table using the EXCHANGE PARTITION
  http://www.Oracle-base.com/articles/Misc/partitioning-an-existing-table-using-Exchange-partition.php

  Or you can use for DBMS_REDEFINITION do directly

  See this article from the Oracle base
  http://www.Oracle-base.com/articles/Misc/partitioning-an-existing-table.php

  You can also create a new table and INSERT the data from the old table.

  The option you are using could depend on indexes how you have, if you intend to keep them all and if the indexes on the partitioned table must be either local or global.

  To refine the new partitioned table, you really need evaluate each index to determine that the index should be global or local, and if the index should also be partitioned.

  There isn't any point to create a new table with the same indexes if you want to redefine all the indexes. You would be better of the backup of the original and then table drop indexes before conversion.

  See the VLDB and partitioning Guide
  http://docs.Oracle.com/CD/B28359_01/server.111/b32024/TOC.htm

• New tables and indexes created do not appear in the view dba_segments

  Hi all
  
  I created 3 tables and indexes, but these items do not appear in dba_segments views. Is this a normal behavior? Previously, with dictionary managed tablespace, I can specify the least possible to create, at the table/index is created. But I don't know how works the locally managed tablespace. Please do advice. Thank you much in advance.
  
  I am using Oracle 11 g R2 (11.2.0.1.0) for Microsoft Windows (x 64), running on Windows 7.
  
  To reproduce this problem, I created the tablespaces as follows:
  
  CREATE TABLESPACE CUST_DATA
  DATAFILE ' d:\app\asus\oradata\orcl11gr2\CUST_DATA01. DBF' SIZE 512K
  AUTOEXTEND ON NEXT MAXSIZE 2000 K 256K
  MANAGEMENT UNIFORM LOCAL 256K SIZE MEASURE
  SEGMENT SPACE MANAGEMENT AUTO;
  
  CREATE TABLESPACE CUST_INDX
  DATAFILE ' d:\app\asus\oradata\orcl11gr2\CUST_INDX. DBF' SIZE 256K
  AUTOEXTEND ON NEXT MAXSIZE 2000 K 128K
  MANAGEMENT UNIFORM LOCAL 128K SIZE MEASURE
  SEGMENT SPACE MANAGEMENT AUTO;
  
  CREATE TABLE CUSTOMER_MASTER (CUST_ID VARCHAR2 (10))
  CUST_NAME VARCHAR2 (30),
  E-MAIL VARCHAR2 (30),
  DATE OF BIRTH,
  ADD_TYPE CHAR (2) CONSTRAINT CK_ADD_TYPE CHECK (ADD_TYPE ("B1", "B2", "H1", "H2")),
  CRE_USER VARCHAR2 (5) DEFAULT USER,.
  CRE_TIME TIMESTAMP (3) DEFAULT SYSTIMESTAMP.
  MOD_USER VARCHAR2 (5).
  MOD_TIME TIMESTAMP (3),
  CONSTRAINT PK_CUSTOMER_MASTER PRIMARY KEY (CUST_ID) USING INDEX TABLESPACE CUST_INDX)
  TABLESPACE CUST_DATA;
  
  SQL > SELECT TABLE_NAME, nom_tablespace
  USER_TABLES 2
  3 WHERE TABLE_NAME LIKE '% CUST. "
  
  TABLE_NAME, TABLESPACE_NAME
  ------------------------------ ------------------------------
  CUSTOMER_MASTER CUST_DATA
  
  SQL > SELECT INDEX_NAME, nom_tablespace
  2 FROM USER_INDEXES
  3 WHERE TABLE_NAME LIKE '% CUST. "
  
  INDEX_NAME TABLESPACE_NAME
  ------------------------------ ------------------------------
  PK_CUSTOMER_MASTER CUST_INDX
  
  
  SQL > SELECT nom_segment, SEGMENT_TYPE, nom_tablespace, BYTES
  2 FROM WHERE USER_SEGMENTS;
  
  no selected line

  An extension to what Sybrand said:

  There is a parameter called differed_segment_creation, who runs the behavior.

  If it is set to TRUE (the default), no segments will be allocated until you fill your table / index.

  Try to insert a row. You will see your table and index in dba_segments.

  See for more information

  http://docs.Oracle.com/CD/E14072_01/server.112/e10595/tables002.htm

• How FLASHBACK all TABLEs and indexes in a certain pattern for a restoration of p?

  Today I read a few web pages on how to use FLASHBACK to restore to a Restore Point.
  
  Unfortunately, all of these examples show just how to restore a single TABLE for example
  
  FLASHBACK TABLE t to RESTORE POINT before_we_do_anything;
  
  But how can I FLASHBACK all TABLEs (and indexes and other dependent objects) in a certain pattern to a one-step restore point)?
  
  FLASHBACK myschema.* to before_we_do_anything POINT of RESTORATION;
  
  does not work.
  
  Peter

  There is nothing like that. However, you could flashback the entire database to a point in time. It would of course have implications through patterns all the good.

  Nicolas.

• After spending tables and index a different tablespace, index got unusable?

  Hello
  
  I moved to table and index a different tablespace. After the many indices obtained unusable. I did not understand thiis?
  
  How can I do still usable?
  
  best regards and thank you?

  If you bâtait the index (after moving the table, by the way), then they should be usable without something extra to see.
  Check this procedure only one (small) table and index if this index can be used later. If not, then you have a mystery :-)

  Kind regards
  Uwe Hesse

  http://uhesse.WordPress.com

• How to collect statistics of Tables and index

  Hi all
  
  Please help me in the collection of statistics of Tables and index.
  
  Thank you

  for tables
  exec dbms_stats.gather_table_stats ("SCOTT", "EMPLOYEES");

  for indexes
  DBMS_STATS.gather_index_stats exec ('SCOTT', 'EMPLOYEES_PK');

  Visit this link for details
  http://nimishgarg.blogspot.com/2010/04/Oracle-dbmsstats-gather-statistics-of.html

• I'm looking for Custom table and index

  Hi Hussein;
  I want to find tables and indexes in the APPS schema. All custom tables and index begins with ZZ...
  
  I try to type this query, but its bring many record a lot, where I am not mistaken. And can not find the query for custom index.
  
  Select a.table_name, a.owner, d.CREATED
  from all_tables an inner join dba_objects d on
  a.OWNER = d.OWNER
  where table_name like '% ZZ' and 'a.OWNER =' APPS
  
  Thanks for the tips

  Hello

  You do not have to join, ask just DBA_OBJECTS (where type_objet = 'TABLE' and object_name like '% ZZ') or (where object_type = 'TABLE' and OWNER = "CUSTOM SCHEMA"). If you follow the standards of customization, custom tables/index should exist under the custom schema (and not under APPS schema).

  Kind regards
  Hussein

• The cache/pin layout tables and indexes - Howto?

  Hi all
  
  I touched upon a request by a seller of BEDS to do something I'm not terribly familiar with... they want to "hide" or "pin" a table and an index in memory.
  
  I was looking and saw something to the effect of making the Table1
  
  ALTER TABLE Table1 in CACHE;
  
  However, the seller has been mention some examples that seem to indicate the creation of a pool of Dungeon (a pool of buffers separate cache?).. and then doing something like
  
  ALTER TABLE Table1 STORAGE (USER_TABLES KEEP)
  
  Can someone give me an idea as to the difference between these two concepts... links on how do, etc.?
  
  Thanks in advance!
  
  Cayenne

  Hello

  There are 'rules' to pin the tables and indexes. The Oracle documentation states:

  "A good candidate for a segment in the pool of the DUNGEON is a segment that is smaller than 10% of the size of the DEFAULT buffer pool and has suffered at least 1% of the total i/o in the system."

  Here are the rules that I use:

  -Cache tables & indexes where the table is low)<50 blocks)="" and="" the="" table="" experiences="" frequent="" full-table="">

  -Cache objects that use more than 10% of the size of the data buffer.

  Here is the script I use to automate the assignment of the tables in the pool of DUNGEON.

  ATTENTION: This script is not for beginners:

  http://www.rampant-books.com/t_oracle_keep_pool_assignment.htm

  I hope this helps...

  Donald K. Burleson
  Oracle Press author
  Author of "Oracle Tuning: the definitive reference".
  http://www.rampant-books.com/book_2005_1_awr_proactive_tuning.htm

• How to find the partitioned tables and the number of sheets in each table

  Hello friends,
  
  I have a scheme called ICS_OWNER where I partitioned and tables not partitoined.
  
  I want to list all the tables that are partitioned.
  
  and also
  
  I want to know what partitions exists in every partitioned table.
  
  with respective schema specified
  
  Thank you/Kumar

  When you have questions like this, you don't ask here.
  but you take your (or should I say 'your') keyboard
  and type
  Select *.
  dict
  where table_name like ' % PART %.
  /

  All the dictionary views are listed in the DICT.

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

• Update of the partition table and update rank with php.

  Hello

  I have a partition table on my site which is

  Scores: id - userid - ranking - points-

  Get points for doing things while using the site users. Points are updated, but I don't know how

  to update this user's position by comparing everyone elses points and rank numbers update

  based on the users with most points in php.

  Hope you can help. Thank you

  Weird, the link I provided is not what I wanted; It seems very different and is difficult to read. Anyway, you don't mention what goes wrong with the code you provided. I also don't think that you want to prepend rank alias with the table name 'notes' because it is not a table column. I do not use MySQL, but I think you want to use ' @' for your SQL local variables, so something like:

  $sqlgo = mysql_query ("SET @rank = 0; SELECT @rank: = @ row + 1 rank Users.id, Users.username, Users.profilepic, Scores.scoreid, Scores.userid, Scores.level, Scores.points, rank, Scores.badges OF Scores INNER JOIN users ON Scores.userid = Users.id ORDER BY invoking DESC LIMIT 30 ");

• DBMS_STATS Table and Index Stats Question?

  All,
  
  Oracle database version: 10.2.0.3
  Operating system: Solaris 10 X 86-64
  
  We have a packed application we collect stats of objects with cascade = "TRUE". If the index statistics would be also collected in the process of collecting statistics. We do a estimate_percent = > 30 and method_opt = > all COLUMNS size AUTO no statistical calculation of these paintings that are huge (1 m lines - 192 m). The collected index statistics is based also on the estimate_percent product in the order.
  
  We found that some of the SQL had improved performance after the calculation of the index statistics in our Test environment that is a copy of production, updated daily.
  
  We thought the way to collect statistics:
  
  Collect statistics for tables with estimate_percent and Computing stats on index.
  
  We are making changes to our scripts and test approach in our Test environment.
  
  In the meantime, I would like to know the pros and cons of this approach?
  
  
  Thank you
  Anantha

  You run your own collect routine of stats, I understand that you disable an Oracle provides and plans automatically on 10g?

  What result did you get the Oracle supplied with AUTO_SAMPLE_SIZE routine?

  Estimate of the table and then calculating the index was something that I saw recommended in the past with ANALYZE and if you see the best results to the test, I think it would be worth in production.

  None of the environments applications two users are exactly the same, but the approach appears reasonable based on your observations.

  I suggest to bring together some before and after snapshots of query performance so that you have documentation of your results.

  IMHO - Mark D Powell-

• INI_TRANS for TABLE and INDEX

  Hello
  
  My version of DB is 10.2.0.3
  
  As default, the INI_TRANS of the tables is 1 and for the index is 2. For some reason I have to increase the INI_TRANS of a table at 5, then what value set for INI_TRANS of indexes on the table?
  
  I read somewhere that INI_TRANS of the index to be set twice from INI_TRANS. means of the table if table INI_TRANS is 5 then INI_TRANS of the index must be set to 10. Is this true? If Yes, then what is the logic behind this?
  
  
  
  Thank you
  Oratest
  
  Published by: oratest on February 4, 2013 15:26

  oratest wrote:

  My version of DB is 10.2.0.3

  As default, the INI_TRANS of the tables is 1 and for the index is 2. For some reason I have to increase the INI_TRANS of a table at 5, then what value set for INI_TRANS of indexes on the table?

  I read somewhere that INI_TRANS of the index to be set twice from INI_TRANS. means of the table if table INI_TRANS is 5 then INI_TRANS of the index must be set to 10. Is this true?

  N °
  There is no useful guidelines for a generic parameter. Consider the conflicting scenes:

  (a) five sessions insert five rows separated in a single table block - with 5 locations of ITL. There is an index on the table, but the five inserted rows just keep these different values that their index entries go to 5 different leaf blocks: the index didn't need initrans 5.

  (b) using the different sessions to insert a row in a table - the nature of the SAMS means that (on average) there are 5 rows of SAMS 80 inserted into 16 different blocks - the SAMS table must be 5. However, in this case the indexed column is generated by a sequence and all 80 index entries should be inserted in the same block of sheets, so you initrans 80 on the index. (Except Oracle will make sheets index block split to work around the problems of initrans was too small on the concurrent inserts.)

  You need to consider the nature of the index and model of changing data for each unique index separately - and then you could assign initrans on the index to do NO MORE THAN the initrans + 1 table because (a) who will lose not too much space (b) he is not likely to let the too great claim to happen (c) Oracle will extend dynamically LAUGHED in most cases (d) if it is bad for an index special you will notice it pretty quickly - and there will be other problems (buffer waits occupied) deal anyway on this index.

  Concerning
  Jonathan Lewis

• Partitioning table and Tablespaces

  Hi all
  We have tables db with millions of records. So we have them partitioned and each partition separate tablespace.
  
  I want to know in what scenarios should we use separate tablespace for each partition because it leads to a waste of space at times.
  
  Concerning
  Lokesh

  There are two scenarios where extending partitions on different tablespaces is logical.

  One is when we have to use different profiles for different categories of partition, and we want to get the best value from our stock. For example, our table is partitioned by date. Most of user requests affects the latest records and the oldest records are rarely questioned and perhaps only of asynchronous process. In this scenario, using a different storage space means that we can put partitions on different servers: the most recent partitions on our more fast, more expensive discs and the old stuff on slower and less expensive kit. [url http://download.oracle.com/docs/cd/B28359_01/server.111/b32024/part_lifecycle.htm#CACECAFB] To learn more.

  The other scenario is high availability. Our entire userbase makes queries across the table, but to execute individual queries against only a few partitions; If our table is probably divided by hash or list. By spreading the partitions on different tablespaces, we can miximise the availability of the data in the table. Suppose that we need to do an offline backup or datafile corruption there. If the table spans twenty tablespaces 95% of its data is still available for users.

  Cheers, APC

• Adding a Partition to a range-Hash partitioned Table

  Hello

  I created the composite partition table (RANGE-HASH).  Oracle: 11.2, OS: HP UX

  CREATE TABLE 'XYZ '. "" TABLE_XYZ.

  (

  ----

  VARCHAR2 (54) "PROFILE" DEFAULT "000000000000000000' ENABLE NON-NULL"

  NUMBER (21.7) "CREATED_ON" DEFAULT 0 ENABLE NOT NULL,.

  ----

  )

  PARTITION BY RANGE

  (

  CREATED_ON

  )

  SUBPARTITION BY HASH

  (

  VIEW PROFILE

  )

  SUBPARTITION TEMPLATE

  (

  SUBPARTITION SP1 TABLESPACE PSAPISU,

  SUBPARTITION TABLESPACE PSAPISU SP2,

  SUBPARTITION SP3 TABLESPACE PSAPISU,

  SUBPARTITION SP4 TABLESPACE PSAPISU,

  SUBPARTITION SP5 TABLESPACE PSAPISU,

  SUBPARTITION SP6 TABLESPACE PSAPISU,

  SUBPARTITION SP7 TABLESPACE PSAPISU,

  SUBPARTITION SP8 TABLESPACE PSAPISU,

  SUBPARTITION SP9 TABLESPACE PSAPISU,

  SUBPARTITION SP10 TABLESPACE PSAPISU,

  SUBPARTITION SP11 TABLESPACE PSAPISU,

  SUBPARTITION SP12 TABLESPACE PSAPISU,

  SUBPARTITION SP13 TABLESPACE PSAPISU,

  SUBPARTITION SP14 TABLESPACE PSAPISU,

  SUBPARTITION SP15 TABLESPACE PSAPISU,

  SUBPARTITION SP16 TABLESPACE PSAPISU,

  SUBPARTITION SP17 TABLESPACE PSAPISU,

  SUBPARTITION SP18 TABLESPACE PSAPISU,

  SUBPARTITION SP19 TABLESPACE PSAPISU,

  SUBPARTITION SP20 TABLESPACE PSAPISU,

  SUBPARTITION SP21 TABLESPACE PSAPISU,

  SUBPARTITION SP22 TABLESPACE PSAPISU,

  SUBPARTITION SP23 TABLESPACE PSAPISU,

  SUBPARTITION SP24 TABLESPACE PSAPISU,

  SUBPARTITION SP25 TABLESPACE PSAPISU

  )

  (

  CREATED_ON_OCP01 PARTITION VALUES LESS THAN (20090101000000).

  CREATED_ON_OCP02 PARTITION VALUES LESS THAN (20090401000000).

  CREATED_ON_OCP03 PARTITION VALUES LESS THAN (20090701000000).

  CREATED_ON_OCP04 PARTITION VALUES LESS THAN (20091001000000).

  CREATED_ON_OCP05 PARTITION VALUES LESS THAN (20100101000000).

  CREATED_ON_OCP06 PARTITION VALUES LESS THAN (20100401000000).

  CREATED_ON_OCP07 PARTITION VALUES LESS THAN (20100701000000).

  CREATED_ON_OCP08 PARTITION VALUES LESS THAN (20101001000000).

  CREATED_ON_OCP09 PARTITION VALUES LESS THAN (20110101000000).

  CREATED_ON_OCP10 PARTITION VALUES LESS THAN (20110401000000).

  CREATED_ON_OCP11 PARTITION VALUES LESS THAN (20110701000000).

  CREATED_ON_OCP12 PARTITION VALUES LESS THAN (20111001000000).

  CREATED_ON_OCP13 PARTITION VALUES LESS THAN (20120101000000).

  CREATED_ON_OCP14 PARTITION VALUES LESS THAN (20120401000000).

  CREATED_ON_OCP15 PARTITION VALUES LESS THAN (20120701000000).

  CREATED_ON_OCP16 PARTITION VALUES LESS THAN (20121001000000).

  CREATED_ON_OCP17 PARTITION VALUES LESS THAN (20130101000000).

  CREATED_ON_OCP18 PARTITION VALUES LESS THAN (20130401000000).

  CREATED_ON_OCP19 PARTITION VALUES LESS THAN (20130701000000).

  CREATED_ON_OCP20 PARTITION VALUES LESS THAN (20131001000000).

  CREATED_ON_OCP21 PARTITION VALUES LESS THAN (20140101000000).

  CREATED_ON_OCP22 PARTITION VALUES LESS THAN (20140401000000).

  CREATED_ON_OCP23 PARTITION VALUES LESS THAN (20140701000000).

  CREATED_ON_OCP24 PARTITION VALUES LESS THAN (20141001000000).

  CREATED_ON_OCP25 PARTITION VALUES LESS THAN (20150101000000).

  PARTITION CREATED_ON_OCPMAX VALUES LESS THAN (MAXVALUE)

  )

  TABLESPACE "PSAPISU" ENABLE LINE MOVEMENT;

  Now, I am trying to add the new partition but becomes under errors:

  ALTER TABLE SAPISU. ADD PARTITION VALUES LESS THAN (20150401000000) CREATED_ON_OCP26 ZTMD_300_VERS_MANAGE

  *

  ERROR on line 1:

  ORA-14074: partition bound must gather greater than that of the last partition

  ERROR on line 1:

  ORA-14018: partition bound list contains too few elements

  I tried the SYNTAX mentioned by Oracle DOC, still getting error. Partitioned table and index management

  Could if it you please let me know, what is the exact syntax that I should follow?

  See you soon

  Sameer

  CREATED_ON_OCPMAX PARTITION SPLIT THAN (MAXVALUE)

  That don't mean to 'divide' the MAXVALUE partition.

  You cannot split a partition that contains the values of A, B, C, D, MAXVALUE to MAXVALUE; that makes no sense. ERROR on line 1:

  ORA-14080: partition cannot be split along the specified high limit

  That exception is to say you can't use MAXVALUE upper limit. You must use a value that is actually IN the partition.

  Go back and look at the definition of your partitions:

  CREATED_ON_OCP25 PARTITION VALUES LESS THAN (20150101000000).

  PARTITION CREATED_ON_OCPMAX VALUES LESS THAN (MAXVALUE)

  See which ends with: "VALUES LESS THAN (MAXVALUE)? MAXVALUE is not IN the score; This is the upper limit of the partition.

  Divide certain value > '20150101000000' and LESS THAN MAXVALUE;

  So if you try to create a partition for OCP26 you can use '20160101000000'.

  CREATE TABLE PART_TEST2)
  VARCHAR2 (54) DEFAULT PROFILE "000000000000000000' ENABLE NOT NULL,
  CREATED_ON NUMBER (21.7) DEFAULT 0 ENABLE NOT NULL
  )
  PARTITION BY RANGE (CREATED_ON)
  (
  CREATED_ON_OCP24 PARTITION VALUES LESS THAN (20141001000000).
  CREATED_ON_OCP25 PARTITION VALUES LESS THAN (20150101000000).
  PARTITION CREATED_ON_OCPMAX VALUES LESS THAN (MAXVALUE)
  )

  ALTER table split partition created_on_ocpmax part_test2
  to (20160101000000) into (partition, partition CREATED_ON_OCPMAX created_on_ocp26)

• CTXCAT index on partitioned tables

  Hi all

  I use an oracle 11.2 database and try to use the index for a sample application oracle CTXCAT.

  I saw that oracle reference documentation "the CTXCAT index can't stand table and index partitioning, not...» "in http://docs.oracle.com/cd/B28359_01/text.111/b28303/ind.htm#BEIIEAFD

  But I was able to create a CTXCAT index on a partitioned table query to use it successfully.

  So can someone tell me exactly it meaning in the documentation of oracle developer "CTXCAT index does not support index and table partitioning?

  Thanks in advance,

  Mor.

  This simply means that you cannot create a LOCAL partitioned index on a table partitioned using the CTXCAT indextype. There is not probably the creation of a global index (ie. covering all partitions) on a partitioned table.

  The wording could be clearer.