Index creating

hi i am new bie to this forum.
just i want to grab some knowledge and share my knowledge.
what is the query to know "yes we need to create an index on this particular column"
base on which information we will decide to we must create indexes on particular columns.
google is away from me.
i am sure you will near to me.
thanks & regards

just i want to grab some knowledge and share my knowledge.
what is the query to know "yes we need to create an index on this particular column"
base on which information we will decide to we must create indexes on particular columns.Have you referred links, which posted here ?
In provided links, if you spent some time you can get lot of them, here is example
CREATE UNIQUE INDEX dept_unique_index ON dept (dname) TABLESPACE indx;
http://download.oracle.com/docs/cd/B28359_01/server.111/b28310/indexes003.htm

Similar Messages

Creation of logical index terminated. Join index create error.

Hi to all,
After running for a few weeks fine. See my earlier message Delete and recreate BWA index of a cube in process chain.
Chains are "terminating" again. I get the following error messages:
Creation of logical index '[Technical Cube_name]' terminated. Error text:
Join index create error;index=bwp_[technical cube_name],location
=nlscli63:30203 2433
Creation of BIA index for InfoCube '[Technical Cube_name]' terminated during activation
A manual deletion by the program RSDDTREX_INDEX_DELETE and a recreation in RSDDV is necessarry to get the index active.
Has anyone a clue on beforehand what is happening or same experiences, before i put in a SAP OSS message.
Regards,
René

Hi
Firstly please ensure that no error exists for the cube when you are
trying to create the index. You can check that in RSRV. Also you need
to check if no change run or loading is occuring.
Please also check that you are not using the backup mode mutual
as this can cause the problem, please refer to the SAP note 1383228.
Best Regards,
Des Gallagher

Unique Index Created Automatically on FK Columns

Referencing the following document under Forward Engineering, http://www.oracle.com/technetwork/developer-tools/datamodeler/newfeatures30-224506.html
Unique index is created for One-to-one relationships defined in the Logical model if there is no PK/UK constraint or unique index defined over foreign key columns.
Why are unique indexes created automatically for foreign key columns? Should "lookups" not be defined in the logical model? I don't understand why it's designed to behave that way.

Why are unique indexes created automatically for foreign key columns? They are created automatically only for 1:1 relationships in order to support that business rule.
Should "lookups" not be defined in the logical model? Can you elaborate on that?
Philip

Index created with DESC having USER_IND_COLUMNS.COLUMN='SYS_NC00023$'

On Oracle 11.2, I observed below
create index ind_jperson_1 on d_jperson(convict_ref);
create index ind_jperson_2 on d_jperson(driver_ref DESC);
select index_name,table_name,column_name,column_position,descend
from USER_IND_COLUMNS where table_name='D_JPERSON'
INDEX_NAME     TABLE_NAME     COLUMN_NAME     COLUMN_POSITION     DESCEND
IND_JPERSON_2     D_JPERSON     SYS_NC00023$     1     DESC
IND_JPERSON_1     D_JPERSON     CONVICT_REF     1     ASCHow to find the exact table column for this index?

user623617 wrote:
Surprise that DESC cause FBI. Then in what case will Oracle use it? The condition name='SMITH' will not use an index on upper(name). Need to use upper(name)='SMITH' to use the index.
To use in dex on upper(name) you need to crete FBI on upper(name).
Similarly if I have an index on (name desc), whould condition name='SMINTH' use the index.Yes, but at a higher cost than regular index (see access & filter):
SQL> create index emp_idx1 on emp(ename desc);
Index created.
SQL> explain plan for
2 select ename from emp where ename = 'SMITH';
Explained.
SQL> @?\rdbms\admin\utlxpls
PLAN_TABLE_OUTPUT
Plan hash value: 654424206
| Id | Operation        | Name     | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT |          |     1 |     6 |     1   (0)| 00:00:01 |
|* 1 | INDEX RANGE SCAN| EMP_IDX1 |     1 |     6 |     1   (0)| 00:00:01 |
Predicate Information (identified by operation id):
PLAN_TABLE_OUTPUT
   1 - access(SYS_OP_DESCEND("ENAME")=HEXTORAW('ACB2B6ABB7FF') )
       filter(SYS_OP_UNDESCEND(SYS_OP_DESCEND("ENAME"))='SMITH')
14 rows selected.
SQL>
Another question, if I have two indexes on both person(name asc) and person(name desc), what index Oracle will use when " where name='SMITH' "?
Unless you use INDEX_DESC hint, optimizer will use ASCindex since it has lower cost (Other decision affecting factor could be order by name desc):
SQL> create index emp_idx2 on emp(ename asc);
Index created.
SQL> explain plan for
2 select ename from emp where ename = 'SMITH';
Explained.
SQL> @?\rdbms\admin\utlxpls
PLAN_TABLE_OUTPUT
Plan hash value: 3999498872
| Id | Operation        | Name     | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT |          |     1 |     6 |     1   (0)| 00:00:01 |
|* 1 | INDEX RANGE SCAN| EMP_IDX2 |     1 |     6 |     1   (0)| 00:00:01 |
Predicate Information (identified by operation id):
PLAN_TABLE_OUTPUT
   1 - access("ENAME"='SMITH')
13 rows selected.
SQL> explain plan for
2 select /*+ index_desc(emp) */ ename from emp where ename = 'SMITH';
Explained.
SQL> @?\rdbms\admin\utlxpls
PLAN_TABLE_OUTPUT
Plan hash value: 2940971887
| Id | Operation                   | Name     | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT            |          |     1 |     6 |     1   (0)| 00:00:01 |
|* 1 | INDEX RANGE SCAN DESCENDING| EMP_IDX1 |     1 |     6 |     1   (0)| 00:00:01 |
Predicate Information (identified by operation id):
PLAN_TABLE_OUTPUT
   1 - access(SYS_OP_DESCEND("ENAME")=HEXTORAW('ACB2B6ABB7FF') )
       filter(SYS_OP_UNDESCEND(SYS_OP_DESCEND("ENAME"))='SMITH' AND
              SYS_OP_DESCEND("ENAME")=HEXTORAW('ACB2B6ABB7FF') )
15 rows selected.
SQL> SY.

Last week what are the new indexes created in my database

last week what are the new indexes created in my database.How can I know?
Thanks

Please try this:
SELECT t.name AS TableName ,
ind.name AS IndexName ,
col.name AS ColumnName ,
STATS_DATE(t.object_id, ind.index_id) AS IndexCreationDate
FROM sys.indexes ind
INNER JOIN sys.index_columns ic ON ind.object_id = ic.object_id
AND ind.index_id = ic.index_id
INNER JOIN sys.columns col ON ic.object_id = col.object_id
AND ic.column_id = col.column_id
INNER JOIN sys.tables t ON ind.object_id = t.object_id
WHERE ind.is_primary_key = 0
AND ind.is_unique = 0
AND ind.is_unique_constraint = 0
AND t.is_ms_shipped = 0
AND STATS_DATE(t.object_id, ind.index_id) > ( GETDATE() - 7 ) ;
T-SQL Articles
T-SQL e-book by TechNet Wiki Community
T-SQL blog

While dropping table, INDEXES created by us, note, not by oracle, does not drop.

Hellow Friends,
I want to know when we drop the table, the indexes created on it does not drop with it. Offcourse I know the indexes which are created when we give constraints on columns drops.
Have you got my point, I am talking about those indexes which are created by us time to time according to our needs.
Thankyou
Sumeet

Hellow Armold,
I tried
drop table <table_name>;
ThankYou
Sumeet

New tables & indexes created do not show up in dba_segments view

Dear all,
I have created 3 tables and some indexes, but these objects do not show up in dba_segments view. Is this a normal behaviour? Previously, with dictionary managed tablespace, I can specify the minimum extent to create, when the table/index is created. But I'm not sure how the locally managed tablespace work. Please do advice. Thank you very much in advance.
I'm using Oracle 11g R2 (11.2.0.1.0) for Microsoft Windows (x64), running on Windows 7.
For the purpose of reproducing this issue, I have created the tablespaces as follow:
CREATE TABLESPACE CUST_DATA
DATAFILE 'd:\app\asus\oradata\orcl11gr2\CUST_DATA01.DBF' SIZE 512K
AUTOEXTEND ON NEXT 256K MAXSIZE 2000K
EXTENT MANAGEMENT LOCAL UNIFORM SIZE 256K
SEGMENT SPACE MANAGEMENT AUTO;
CREATE TABLESPACE CUST_INDX
DATAFILE 'd:\app\asus\oradata\orcl11gr2\CUST_INDX.DBF' SIZE 256K
AUTOEXTEND ON NEXT 128K MAXSIZE 2000K
EXTENT MANAGEMENT LOCAL UNIFORM SIZE 128K
SEGMENT SPACE MANAGEMENT AUTO;
CREATE TABLE CUSTOMER_MASTER (CUST_ID VARCHAR2 (10),
CUST_NAME VARCHAR2 (30),
EMAIL VARCHAR2 (30),
DOB DATE,
ADD_TYPE CHAR (2) CONSTRAINT CK_ADD_TYPE CHECK (ADD_TYPE IN ('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, TABLESPACE_NAME
2 FROM USER_TABLES
3 WHERE TABLE_NAME LIKE 'CUST%';
TABLE_NAME TABLESPACE_NAME
CUSTOMER_MASTER CUST_DATA
SQL> SELECT INDEX_NAME, TABLESPACE_NAME
2 FROM USER_INDEXES
3 WHERE TABLE_NAME LIKE '%CUST%';
INDEX_NAME TABLESPACE_NAME
PK_CUSTOMER_MASTER CUST_INDX
SQL> SELECT SEGMENT_NAME, SEGMENT_TYPE, TABLESPACE_NAME, BYTES
2 FROM USER_SEGMENTS;
no rows selected

Prior to 11g, when you created a table or whatever, you automatically allocated one extent.
This is now no longer true and depends on a parameter I don't remember.
dba_segments is a summary of dba_extents.
Obviously, if there is no extent allocated, the table (view is defined with inner join) will not show up.
You could qualify this is as a bug and submit a SR to Oracle. But then the performance impact may be huge.
Sybrand Bakker
Senior Oracle DBA

Confirming, indexing, creating peak file. What's this all about?

Althought I'm new to PrPro (see my very first post, it was the that I just started using this app), premiere already ate me that anywhere I go, when it comes to video editing, I am in its belly. But still I want an explanation regarding (again) about this message that's appearing in the status bar: 'conforming ?????.mpg". I don't really understand what's this all about. A little explanation is a lot to me. But what I am concerning about this thing is, it seems to be endless. PrPro had done already on all of my assets, conforming, creating peak files, indexing, but it still keeps on doing it again and again. Is there a problem with my audio/video files?
During the first time of my use, I didn't mind. I didn't even notice it. But now I started to be concerned with it since I my pc really slows down when PrPro starts this seemingly perpetual activity. If there's a problem somewhere else please help me.

Did you notice that you make the same mistake as one of our regulars here, the_wine_snob, otherwise known as Bill Hunt, in leaving out one 'a' in my last name? I'm not offended but wonder if that is a human trait to not overdo it and two 'a'-s may be too much?
I resemble that comment! Harm, you have to realize that I am from Mississippi, and everyone is known as Billy Bob, Joe Bob, or Bubba. We had no Harm Millaards - too many double vowels and consonants for us. At least this helped, when I signed up for a bunch of X-rated sites, as Harm Millard...
OK, where were we? LameTiger (check that spelling, as I think I got it wrong again and apologize profusely), when one has non-standard footage, three thing need to happen: the files need to be indexed, the Audio must be Conformed (CFA files) and the Waveform Display (PEK) files must be created. Depending on the number of files, their Duration and one's computer's speed this can take from moments, to maybe 20 mins.
If you have not just loaded up this Project, then gone for a cup of coffee, or tea, I urge you to do so. There is a tiny progress bar in the very lower-right of the GUI, that traces this. Let it happen, and be patient. I know that this sounds like a scene from the Karate Kid, but it's important. Many systems will crash, if one tried to do anything, before this process completes. I can work (albeit slowly), during the process. Many cannot.
Now, if you HAVE patiently waited this process out, and it has completed, AND the next session yields the exact same thing, then something is not quite right. Could be files getting moved, deleted, or otherwise not available to PrPro, or some setting in one's Scratch Disks, or some other problem.
Hope that a bit of patience, and a cup of Darjelling helps. Please let us know.
Good luck,
Hunt

How to use search index created by jhindexer

Hi i have created a JavaHelp set using Docbook which works ok but the search doesnt work. I then discovered jhindexer and have sucessfully used it to create a directory called index containing the index (DOCs,DOCS.TAB etc) in the same directory as the html files but it still doesnt work.
I guess i have to modify one off my javaHelp files (jhelpidx.xml,jhelpset.hs) to point to this index but cant find any info on this.
Can anyne help me please.

place the snippet below into your HelpSet File (.hs), the helpset file should be in the same directory as the JavaHelpSearch folder where your index files are located. See the structure:
/foo.hs
/JavaHelpSearch/DOCS
/JavaHelpSearch/OFFSETS
---- snippet -----
<view>
<name>Search</name>
<label>Suche</label>
<type>javax.help.SearchView</type>
<data engine="com.sun.java.help.search.DefaultSearchEngine">JavaHelpSearch</data>
</view>
---- snippet -----
And read the supplied PDF documentation, because if you have problems with this, you will have even more problems with some more advanced stuff.

Problem full-text in blob column index created using Oracle Text

Hi,
I'm running Oracle Database 10g 10.2 on solaris
I configure Oracle text if i look for in a varchar2 column is ok, but with blob column doesn't works the search.
I have a table with a blob column which contains document. I load document with Oracle UCM (stellent)
My index scripts is:
CREATE INDEX ORAUCM.FT_IDCCOLL1 ON ORAUCM.IDCCOLL1
(DDOCFULLTEXT)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS('DATASTORE CTXSYS.DEFAULT_DATASTORE FILTER CTXSYS.AUTO_FILTER FORMAT COLUMN DFULLTEXTFORMAT CHARSET
COLUMN DFULLTEXTCHARSET LEXER OCS_IDCCOLL1_LEXER SYNC (ON COMMIT)')
NOPARALLEL;
And my select retunm 0 rows although it will be many documents:
SELECT IdcColl2.dID, dDocName, dDocTitle, dDocType, dRevisionID, dSecurityGroup, dDocAuthor,
dDocAccount, dRevLabel, dFormat, dOriginalName, dExtension, dWebExtension, dInDate, dOutDate,
dPublishType, dRendition1, dRendition2, VaultFileSize, WebFileSize, URL, dFullTextFormat,
dFullTextCharset, DocMeta.*
FROM IdcColl1, DocMeta
WHERE IdcColl1.dID=DocMeta.dID AND (CONTAINS(dDocFullText,'SUBIR') > 0 )
ORDER BY dInDate Desc
Thanks in advance.

Thank you for your answer.
I response your question:
- yes DDOCFULLTEXT is a BLOB column.
- The document that word, excels, whatever. We load the document with UCM (universal Content Management)
because i need full-test search form UCM tool.
- Yes 'subir' containts in the word document.
- select * from CTX_USER_INDEX_ERRORS ;
No rows returned.
- SELECT TOKEN_TEXT FROM DR$FT_IDCCOLL1$I
No rows returned.
- I tried create symplifying index and doen't work.
I tried create table and index context on oracle 10.2.0.3 (test database)and works ok.
I compared both context (test database and ucm database) and i saw a difference:
In ucm database there are these preferences "analyze text"
BEGIN ctx_ddl.create_preference('ORAUCM.', 'WORLD_LEXER'); end;
BEGIN ctx_ddl.create_preference('ORAUCM.', 'DETAIL_DATASTORE'); end;
I don't know if is important diference or no.
Please if you need more information, tell me.
Thanks for your time.

Normal Indexes created for Primary/Unique Keys in Oracle8/8i

I remeber prior to Oracle8, when we create a Primary/Unique Key constraints, an unique index will be created by default. But I am noticing now in 8/8i when we create either Primary or Unique key, only normal/simple index is created. We are not able to override this normal index either by dropping and recreating the index alone. I believe it would be pretty much better in case of performance if we have a unique index for this columns. Can anybody help why is it changed so in 8/8i??
Thanks,
R. M.

Dear Rob,
since your answer was helpful and since it was the only one I will grant you full points on that.
Thanks again for your input. In case other developers should look this thread up being confronted
with the same kind of problem, here is how we solved it:
We added an artificial primary key (a number of type NUMC 8) to the table which is supposed to
include the structure. This key alone takes care of the uniqueness of eacht entry.
All the others fields that we want to have available for a fast direct access, including the ones
from the included structure, are put together in a secondary index.
best regards
Andreas

Problem with blob column index created using Oracle Text.

Hi,
I'm running Oracle Database 10g 10.2.0.1.0 standard edition one, on windows server 2003 R2 x64.
I have a table with a blob column which contains pdf document.
Then, I create an index using the following script so that I can do fulltext search using Oracle Text.
CREATE INDEX DMCS.T_DMCS_FILE_DF_FILE_IDX ON DMCS.T_DMCS_FILE
(DF_FILE)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS('DATASTORE CTXSYS.DEFAULT_DATASTORE');
However, the index is not searchable and I check the following tables created by database for my index and found them to be empty as well !!
DR$T_DMCS_FILE_DF_FILE_IDX$I
DR$T_DMCS_FILE_DF_FILE_IDX$K
DR$T_DMCS_FILE_DF_FILE_IDX$N
DR$T_DMCS_FILE_DF_FILE_IDX$R
I wonder what's wrong with it.
My user has been granted the ctx_app role and I have other tables that store plain text which I use Oracle Text are fine. I even output the blob column and save as pdf file and they are fine.
However the database seems like not indexing my blob column although the index can be created without error.
Please advise.
Really appreciate anyone who can help.
Thank you.

The situation is I have already loaded a few pdf document into the table's blob column.
After I create the Oracle text index on this blob column, I find the system generated index tables listed in my earlier posting are empty, except for the 4th table.
Normally we'll see words inside the table where those are the words indexed by oracle text on my document.
As a result, no matter how i search for the index using select statement with contains operator, it will not give me any result.
I feel weird why the blob is not indexed. The content of the blob are actually valid because I tested this by export the content back to pdf and I can still view and search within the pdf.
Regards,
Jap.

Index created but no search results

After a bit of trouble I dropped and then created the interMedia indexes for the documents in my portal content areas. I had too many documents to use the web interface so I used the plsql scripts (ctxdrind.sql and ctxcrind.sql) to drop and recreate the indexes. The indexes show up in my database with 1.33 million rows of data but nothing is ever returned in the search results from the portal. The search was working but stopped updating itself a few weeks ago because the process was killed during a server move. Since it had been awhile since it was synched up, I dropped and recreated but now nothing is returned. Any ideas?
Thanks,
Ben

Intermedia text is now Oracle Text, you will want to post this question in the Oracle text forum:
http://forums.oracle.com/forums/forum.jsp?id=477576
Unless a text person happens to go in here every now and then.
You may want to post it in the portal forum as well.
Larry

Table with FK with no Index created will LOCK TABLE during DML ?

Hi all,
Know that always create index for FK on table as FK's value will 99.9% be use in Where query on table.
Had seen info with regards to the above and had not been successfull trying to simulate the above using:
DROP TABLE "TABLE2";
CREATE TABLE "TABLE2"
   (     "A2" VARCHAR2(10 BYTE),
      CONSTRAINT "PK_A2" PRIMARY KEY ("A2") ENABLE
Insert into TABLE2 (A2) values ('AAA');
Insert into TABLE2 (A2) values ('BBB');
Insert into TABLE2 (A2) values ('CCC');
DROP TABLE "TABLE1";
CREATE TABLE "TABLE1"
   (     "A1" VARCHAR2(10 BYTE),
     "A2" VARCHAR2(10 BYTE),
     "A3" VARCHAR2(10 BYTE),
      CONSTRAINT "PK_A1" PRIMARY KEY ("A1"),
      CONSTRAINT "FK_A1_A2" FOREIGN KEY ("A2")
       REFERENCES "LSD"."TABLE2" ("A2") ENABLE
Insert into TABLE1 (A1,A2,A3) values ('111','AAA','yyy');
Insert into TABLE1 (A1,A2,A3) values ('222','BBB','ZZZ');
When i UPDATE A3 in TABLE1 using '111' record in SQLPlus without COMMIT,
I was able to UPDATE A3 using '222' in another SQLPlus session, so it does not seems like table is LOCK.
Questions.
1. Am using 10GR2, is the above not applicable to 10G ?
2. Or had understand the above concept wrongly ?
Thanks In Advance
Zack

Hi Legatti,
I was able to UPDATE A3 using '222' in another SQLPlus session, so it does not seems like table is LOCK.   Thought that when updating more than 1 record in TABLE1 will caused TABLE1 to be LOCK.
Now, try to perform an update on the TABLE1 like below:    SQL>update table1 set A3='aaa' where A1=111;
And open an another session and perform this SQL below    SQL>delete from table2 where A2='BBB'; -- now it's hangs
Yes !!! Very interesting, it hangs until i do a COMMIT on the UPDATE
and DELETE session shows ORA-02292 Integrity Constraint violated as child record found.
Now, when i create a index for A2 on TABLE1, it DOES NOT HANG and shows ORA-2292 immediately.
So, is this the result of having no index for FK column (A2) on TABLE1 and when doing DML ,
before COMMIT, will result in TABLE2 to be hang upon doing DML on TABLE2 ?
Thanks for the valuable lesson learned.
Zack

Indexes created but shows as missing

Hi Gurus,
I have an issue ,where the system log shows that indexes are successfully created from drop indexes after successful data load. but there are missing secondary indexes existing for the same cube in DB02.
There are two process chains based on this cube.
WHAT MAY BE THE REASON AND HOW TO RESOLVE THAT?
PLEASE HELP

Hi Chandran,
Thanks for your reply but this program is not defined in the system.I have manually repaired all the indexes but iam curious to know why its showing missing indexes where as system is showing indexes are built successfully.
u got any clue?

Indexes created in database

Hi,
on FSCM 91, on Win 2008, Tools 8.52, DB Oracle 11g.
If an index is created not in Application designer (but in for example in SQLPLUS) would it be used by PeopleSoft when browsing or running a batch by Process Scheduler ?
In other words the indexes for PeoplSoft should absolutely be created in Application designer ?
Thanks and regards.

As far as I know PeopleSoft does not explicitly use optimizers in SQL like referring to specific indexes.
The indexes are used by the database (Oracle) when an sql is executed.
All objects you can create from Application Designer, should also be created from Application Designer.
This make them part of the PeopleTools metadata and therefore you can add these objects, also indexes, to projects and migrate to other environments using Application Designer.
Hakan

Index creating

Similar Messages

Maybe you are looking for