index in the separate table space

Hello

in separate indexes improves performance if yes then how?

810345 wrote:
good article but my question is different from maintaining index in separate tablespace how to increase performance?

This isn't. Separating the data and the indexes to improve performance is a myth.

Tags: Database

Similar Questions

Cannot create indexes on the flow table

Hello
I'm new to ODI.
The problem is that during the execution of an interface, I get the error of the "IKM Oracle Dimension to slow variation"
The command in step "Create unique index on the flow table:
creating index < % = odiRef.getTable ("L", "INT_NAME", "A") % > idx
on < % = odiRef.getTable ("L", "INT_NAME", "A") % > (< % = odiRef.getColList ("", "[column]", ",", "", "SCD_NK") % >)
< % = odiRef.getUserExit ("FLOW_TABLE_OPTIONS") % >
generate the following statement which lacks the name of the column between the (_)
Create index I$ _MYTABLE_idx
I have $_MYTABLE)
NOLOGGING
The result is that the interface fails with the error 936: 42000: java.sql.SQLException: ORA-00936: lack of expression caused by the previous command wrong.
Please, can you help me?
Thank you very much
Angelo

Hello

I'm really really sorry! I just realized that you are working on the SCD. Basically, you are looking for all the column mapped as SCD_NK (key to slowly change natural Dimensions) insofar as shown here

Substitution QAnywhere

IF you need to read this

SCD Type 2 - ODIExperts.com

Let me know.

Purge the table FND_LOBS (attachmentolders of 2 years) to the cleaning table space
Hello

I have a requirement to serve the table FND_LOBS (spare part which is over 2 years old) in the cleaning table space.

Please advise me which is the best way to serve FND_LOBS.

I already went through the Notes below, but no luck...

--
871721.1 - how to purge FND_LOBS?
555463.1 - how generic Purge or purchase spare part of the Table FND_LOBS
298698.1 - avoiding an abnormal growth of the FND_LOBS table in 11i Applications
303709.1 - recovering unused space in the tablespace APPLSYSD
555463.1 - how generic Purge or purchase spare part of the Table FND_LOBS
--

Thank you
Genoo

Published by: Geno on April 1, 2013 05:32
Geno says:
None notes solve my requirement, I don't see an option to purge only the data that is older than 2 years.

Thank you
Genoo

Purge FND_LOBS table can simultaneous running of 'Purge obsolete generic Queue Manager Data' program - simultaneous treatment - how to add the simultaneous program "Purge obsolete generic Queue Manager Data" to the Sysadmin User. [216541.1 ID]

You can find more information about the settings for this program at the same time (questions on purge stale data of generic file manager [1165208.1 ID]).

Thank you
Hussein

How to create indexes on the nested table.
Hi all
I held the syntax to create indexes on the nested table.

I found below synta but when I try it with my table it gives me error

CREATE UNIQUE INDEX indx_name
ON nestedtablestore (NESTED_TABLE_ID, id);

What is here NESTED_TABLE_ID & ID
They are virtual your nested table

Here is an example.
```
create or replace type obj as object (no integer, address varchar2(100))
/
create or replace type tbl as table of obj
/
create table test_tbl (id integer, name varchar2(100), address tbl) nested table address store as address_nt
/
create unique index address_no_idx on address_nt (no, address)
/
```
Published by: Karthick_Arp on November 23, 2010 01:41

Index on the primary table becomes UNUSABLE after Exchange of partition
Hello!

I am the scene changes to partition and somehow, I see that the partition that I Exchange eventually becomes "UNUSABLE".

The steps that I'm following:

1. creating the temporary table:

CREATE TABLE TEMP_TKTHEADER
AS SELECT * FROM T3TKTHEADER
WHERE 1 = 2

2. replacement of the partition

ALTER TABLE T3TKTHEADER
PART08Q1Q2 PARTITION EXCHANGE
WITH TABLE TEMP_TKTHEADER

After the Exchange is carried out and I ask the stats of the index on the primary table (T3TKTHEADER as in this case):

INDEX_NAME NOM_PARTITION STATUS
----------------------------------------------------------------------------------------------
XTKTHDR1 PART08Q1Q2 UNUSABLE
XTKTHDR10 PART08Q1Q2 UNUSABLE
XTKTHDR11 PART08Q1Q2 UNUSABLE
XTKTHDR12 PART08Q1Q2 UNUSABLE
XTKTHDR13 PART08Q1Q2 UNUSABLE
XTKTHDR14 PART08Q1Q2 UNUSABLE
XTKTHDR2 PART08Q1Q2 UNUSABLE
XTKTHDR3 PART08Q1Q2 UNUSABLE
XTKTHDR4 PART08Q1Q2 UNUSABLE
XTKTHDR5 PART08Q1Q2 UNUSABLE
XTKTHDR6 PART08Q1Q2 UNUSABLE
XTKTHDR7 PART08Q1Q2 UNUSABLE
XTKTHDR8 PART08Q1Q2 UNUSABLE
XTKTHDR9 PART08Q1Q2 UNUSABLE

This is normal behavior!
Is not swap Partition just supposed to change the pointer to the partition of the temporary table data and leave the rest of the table intact!

Thank you
AB007
Dear AB007,

Please see subpart of swap partition. I assumed that the version of your database is GR 11, 2;

http://download.Oracle.com/docs/CD/E11882_01/server.112/e10592/statements_3001.htm#BABHHAHF
```
INCLUDING | EXCLUDING INDEXES Specify INCLUDING INDEXES  if you want local index partitions or subpartitions to be exchanged with the corresponding table index (for a nonpartitioned table) or local indexes (for a hash-partitioned table).
Specify EXCLUDING INDEXES  if you want all index partitions or subpartitions corresponding to the partition and all the regular indexes and index partitions on the exchanged table to be marked UNUSABLE.
```
Hope that helps.

Ogan

How to store an index in a specific table space?

Hi all...
I use Oracle 10.2.0.

Is it possible to store an index in a table space, with the same create index syntax?

I tried the following syntax:

create index index_name on table_name (column_name) tablespace index_tablespace;

and I get the following error:

ERROR on line 1:
ORA-02216: tablespace name EXPECTED

Any help would be appreciated.

Latvian83 wrote:

create index index_name on table_name (column_name) tablespace index_tablespace;

Is index_tablespace of the EXACT name of the tablespace in which you try to create indexes? I bet - it isn't. If so, then probably tablespace name you use is a key word / booked. For example:

SQL> create table table_name(column_name number);

Table created.

SQL> create index index_name on table_name (column_name) tablespace as;
create index index_name on table_name (column_name) tablespace as
                                                               *
ERROR at line 1:
ORA-02216: tablespace name expected

SQL> create index index_name on table_name (column_name) tablespace date;
create index index_name on table_name (column_name) tablespace date
                                                               *
ERROR at line 1:
ORA-02216: tablespace name expected

SQL>

SY.
P.S. Next time post exact code.

How to compare data from the two table column by column and connect the result compared to the separate table

Hello experts...
I'm new to this forum and Oracle coding complex.
I have a task in which I want to compare two tables with the same structure, same columns. My Oracle database is 11g Release 2. I want this column-by-column comparison and save the result in a separate table. (say result_table)
The structure of the table would be as follows:
SQL > desc emp;
Name                                      Null?    Type
----------------------------------------- -------- ----------------------------
EMPNO NOT NULL NUMBER 4
ENAME VARCHAR2 (10)
JOB                                                VARCHAR2(9)
MGR                                                NUMBER(4)
HIREDATE DATE
SAL                                                NUMBER(7,2)
COMM                                               NUMBER(7,2)
DEPTNO NUMBER (2)
SQL > emp_comp desc;
Name                                      Null?    Type
----------------------------------------- -------- ----------------------------
EMPNO NOT NULL NUMBER 4
ENAME VARCHAR2 (10)
JOB                                                VARCHAR2(9)
MGR                                                NUMBER(4)
HIREDATE DATE
SAL                                                NUMBER(7,2)
COMM                                               NUMBER(7,2)
DEPTNO NUMBER (2)
Both of the tables EMPNO is the primary key.
I want to compare these two tables based on the EMPNO (EMPNO even is both tables).
The result log table would be as follows:
SQL > create table result_table
2 (check_sr_no, number (5),)
table_name 3 varchar2 (30),
ROW_ID 4 varchar2 (20).
column_name 5 varchar2 (20).
6 column_data varchar2 (1000).
compared_by 7 varchar2 (10));
Table created.
SQL > alter table result_table
2 Add the constraint result_table_pk
3 primary key (check_sr_no);
Modified table.
The name of the table and the name of the column will not be hardcoded (based parameter by user)
I tried to use the dbms_comparison package, but do not find comparison of column to column.
I also used by using the query operator LESS. It's showing the difference in rank.
I also went to https://asktom.oracle.com/pls/apex/f?p=100:11:0:P11_QUESTION_ID:2151582681236
Your help will be very appreciated.
Thank you
DK

Tom Kyte has answered this question MANY times over the years. Here are links for its solution

https://asktom.Oracle.com/pls/Apex/f?p=100:11:0:P11_QUESTION_ID:4934799800346640847

Don't know the source table space to use in REMAP_TABLESPACE
11.2.0.2/Solaris 10

We have a dump expdp of a related development scheme. We had dropped the source DB. Now, we want to create a new scheme in a new DB using this dump. We do not know the storage space used by the schema of the source as this DB does not exist today.

To find the storage space used by the schema of the source, I can go ahead and impdp and cross errors "tablespace does not exist" in the log file impdp (need to do some research on Google to create an awk for this script)
But y at - it another way to determine the storage space used by the schema of the source when the source database no longer exists? We do not have the expdp log file is (currently looking for it)
I see 2 options for you.

1. run your grep sqlfile import and then that file for the keyword TABLESPACE. This will give you all the tablespaces to be used when ordering import.

2. start your import but with these:

keep_master = master_only y = nom_du_travail y = my_master_only

This will load just the main table, and then you can query the master to find storage space. If your dumpfile is important, it can be a lot
faster than sqlfile once the import is complete, do a query like this:

SQL > connect schema_running_job/password
SQL > select unique object_tablespace from my_master_only where process_order > 0 and duplicate = 0;
SQL > select unique object_name from my_master_only where process_order > 0 and duplicate = 0 and object_type = 'TABLESPACE ';

I hope this helps.

Dean

Published by: Dean WINS 12 Sep, 2012 10:22

Create ctxsys.ctxcat index in the object Table
What I'm trying to do is to create an index of type ctxsys.ctxcat on 'col3 '. But this 'col3' is not a 'TABLE', but in an object, as follows:

CREATE OR REPLACE TYPE TestObj AS OBJECT
(
col1 varchar2 (10),
col2 varchar2 (10),
COL3 varchar2 (10),
COL4 varchar2 (10)
);

CREATE OR REPLACE TYPE AS THE TestObj TABLE TestTable;

Now, how can I create an index of type ctxsys.ctxcat on 'col3 '?

create index test_ind on TestTable (col3) indextype is ctxsys.ctxcat;?

Thank you for helping.

Scott
You cannot index a user-defined data type. Indexes are used for persistent storage of persistent objects.

What I suspect you really want is an associative array or an array indexed by integer binary. Demos here:

http://www.morganslibrary.org/reference/arrays.html

Drop and re-create the index on the current table
Hello

I just have a few questions about the removal and creating indexes on a table that activates a lot.

Let me explain first:

The table is used by the application with the DML statements every 3 seconds and I want to do is to drop the indexes and re-create them.
But Im worried about the consequences - what happens when I try to recreate the indexes and the table has an option rowlock/used by the application?

P.S
It's production environment - so I can't stop the application.

BR / Ander
A reconstructed index either Online or Offline.

Online index rebuild features:

ALTER INDEX REBUILD ONLINE;

LMD is allowed on the base table
It's relatively slow
Base table is targeted for the new index
Base table is locked in shared mode and DOF is not possible
Intermediate table stores changes to data in the base table, during the rebuilding of indexes to update the new index later

Offline index rebuild features:

ALTER INDEX REBUILD. (Default)
Does not refer to the base of the table and the base table is exclusively locked
New index is created from the old index
Not possible DML and DDL on the base table
Relatively faster

Index on the seeding Table Oracle Applications
Hi all

Can I create an index on a column to the table of the seeds of the oracle applications. If so, then, what are the implications? If not, what are the reasons... Can anyone give some input on this...

Why I need this...

I have a validation on the column 'JOURNAL_COMMENT' in Table 'IC_JRNL_MST' in my custom Interface program. It takes 2.5 minutes to complete the validation of a record. I created the index on this column in the process of development and validation time is reduced to less than a second. So, I need to create this index on an instance of production to reduce the time of validation.

can I do it? (create the index on the production instance) forgot to mention... I can't ignore that particular column validation...

Thanks in advance...
Melanie
You can certainly create indexes custom table seeded so this improvement in performance has to offer. I did it several times.
As you know, a new index is provided with a cost (storage and maintenance), but it will be significantly smaller than your gains.
A new index will not harm any validations / business logic.
Just keep in mind that if you or a patch happens to drop and re-create the table, you must remember to rebuild the index.
Hope that answers your question

Sandeep Gandhi
Independent consultant
513-325-9026.

use of the temporary table space
Hello

How much space is a specific temporary table used in my current session? How can I learn that.

V$ SORT_USAGE view shows all (sorting and temporary tables). I want to learn a specific temporary table usage percentage. I can see their rank by rank in V$ SORT_USAGE, but which belong to that is, I can not children them.

for the former there are 4 temp table that I used in a session, when I select V$ SORT_USAGE, I see 4 rows (segtype is DATA) but one that is what table?

Edit: I changed the subject because of missunderstandings.
Not Mustafa, Oracle separate temporary segments as wise TWG name. He says just segment total cumulative time used by a user. See below the link where similar questions asked by a user and Tom's answer:

Hi Tom
Just part of my question have already been dealt with where we can estimate the size of a Global
temporary table v$ sort_uage, but what to do if:
1. There is more than 1 TWG under a scheme. Seems v$ sort_usage has no column by which we
can filter our a TWG home.
2. If a TWG either be used multiple users how we all the total size of the TWG.
3. How do we know the total number of lines in the TWG independently of any user who is
storing files in the TWG.

Thanks in advance for your answers.
concerning
-Raj

Follow-up November 23, 2011-12:00 Central time zone:

(1) it is not followed nationwide.

(2) you must sum in v$ sort_usage - but please remember, it is information very very very transient, it's roughly in the category 'isn't really tell you anything. "

(3) unless they (sessions) will tell you - you cannot, that no information is not just burned anywhere. Of what possible use would be? It would be transitional (a simple validation and response could change a million). He would not provide any useful information.

I'm very curious about what you would do with this data?

http://asktom.Oracle.com/pls/asktom/f?p=100:11:0:P11_QUESTION_ID:15826034070548

Concerning
Girish Sharma

Published by: Girish Sharma on July 19, 2012 18:31
Typo corrected.

Adding indexes to the fact table large
Hello

Using oracle 11.20.3

If made big table several billion lines and wants to add index disadvantages to only expliciltly gathering stats on the new index.

Reason I just want to make the new index will be much faster.

Thoughts?

Thank you
11.2 or later, his Stats are collected at the time of the creation of the index and you don't need to do it explicitly. Oracle optimizer will be bale to see this index immediately after creating indexes.

Best way to estimate the individual table space use fo
Hello

We need to export some tables and are looking for a guide on the sapce used by the table and associated indexes.

Is dbms_datapump and it says GB size etc.

It is the best way to get idea of psace used by an indivifula and index tbal or is there a better way?

Thank you
below expdp command gives you the size of the tables you want to export, it gives you only the size but never exports.

expdp user/pwd@db tables = a, b = y estimate_only

You can also try

SELECT SUM (bytes) / 1024/1024 MB OF dba_segments WHERE segment_type = 'TABLE' AND owner = 'USER' AND nom_segment = 'TABLE ';

How to create indexes for the great table of telecom
Hello

I'm working on DB 10 G on a 5 REHL for telecommunications company with more than 1 million saved per day, we need speed up the result of the query.
We know, there are several types of INDEX and I need professional advice to create a suitable,

many of our requests depend on the MSID (the MAC address of the Modem) column,
```
   
Name           Null Type         
-------------- ---- ------------ 
STREAMNUMBER        NUMBER(9)    
MSID                VARCHAR2(20) 
USERNAME            VARCHAR2(20) 
DOMAIN              VARCHAR2(20) 
USERIP              VARCHAR2(16) 
CORRELATION_ID      VARCHAR2(64) 
ACCOUNTREASON       NUMBER(3)    
STARTTIME           VARCHAR2(14) 
PRIORTIME           VARCHAR2(14) 
CURTIME             VARCHAR2(14) 
SESSIONTIME         NUMBER(9)    
SESSIONVOLUME       NUMBER(9)    
.
.
.
```
Please help,
Hello

first of all, think of all these SQL for the subquery on MAX (fairy) with analytical functions, the examples given on AskTom of rewriting: http://asktom.oracle.com/pls/asktom/f?p=100:11:0:P11_QUESTION_ID:9843506698920

So I'll start with a normal index the MSID (but I think you already have), but provide a compression on the column, I think the same value MSID exist several times in the table. If the performance is not satisfactory or that the plan is not the best, then an option to include more columns can help you.

I think that the first part of the answer will bring more gain.

Herald tiomela
http://htendam.WordPress.com

index in the separate table space

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