Index type created as "TABLE OF XMLTYPE?"

I have a crazy question.
Is it possible to create a structured or unstructured index on a type in Oracle 11.2.0.3 created as:
CREATE TYPE mytype AS TABLE OF XMLTYPE?

You're right, crazy question
An index, whatever its type, is designed to work on a relational or object instance column, not on a class definition.
I don't know what you had in mind, but to give some sense out of your question you could imagine doing something like this :
- create the type definition
- create a table to hold instance of this type
- create the index on the nested table column
CREATE TYPE mytype AS TABLE OF XMLTYPE;
CREATE TABLE mytable (myobj mytype)
NESTED TABLE myobj STORE AS mytable$nt
XMLTYPE COLUMN column_value STORE AS SECUREFILE BINARY XML
CREATE INDEX mytable_uxi ON mytable$nt(column_value)
INDEXTYPE IS xdb.xmlindex ;

Similar Messages

Retriving the XMLData from a table of XMLtype

Hi,
I am Creating a table of xmltype and inserting xml into the table.
1. create table test_tab of xmltype xmlschema "/public/config.xsd" element "Config" ;
2. insert into test_tab values('<Config
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="/public/config.xsd">
<ApsConfig>
<TcpInterfaceConfig>
<Mode>CONNECT</Mode>
<Port>28496</Port>
</TcpInterfaceConfig>
</ApsConfig>
</Config>');
How to retrieve the above inserted row into a new XML file?
If i used the dbms_xmlgen() to get the xml, its not showing properly.
Please help me.
Thanks ahead.....
Edited by: jagdish1206 on 24 Mar, 2010 3:41 AM

From Oracle's documentation
The DBMS_XMLGEN package converts the results of a SQL query to a canonical XML formatSince your data is already XML, there is no need to use DBMS_XMLGEN (unless you are doing something more complex not mentioned in your post). Just use a simple
select * from test_tab;
to see your data.
Example:
Connected to Oracle Database 11g Enterprise Edition Release 11.1.0.6.0
SQL> create table test_tab of xmltype; -- shortened as don't have your schema
Table created
SQL>
SQL> insert into test_tab values('<Config
2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3 xsi:noNamespaceSchemaLocation="/public/config.xsd">
4 <ApsConfig>
5 <TcpInterfaceConfig>
6 <Mode>CONNECT</Mode>
7 <Port>28496</Port>
8 </TcpInterfaceConfig>
9 </ApsConfig>
10 </Config>');
1 row inserted
SQL> select * from test_tab;
SYS_NC_ROWINFO$
<Config
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceS
SQL> set long 1000 -- Doing for display purposes only
SQL> select * from test_tab;
SYS_NC_ROWINFO$
<Config
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="/public/config.xsd">
<ApsConfig>
<TcpInterfaceConfig>
<Mode>CONNECT</Mode>
<Port>28496</Port>
</TcpInterfaceConfig>
</ApsConfig>
</Config>

How to create index to speed up query on XMLTYPE table

I have a table of XMLTYPE called gary_pass_xml. What kind of index can I create on the table to speed up this query.
SELECT (Extract(Value(FareGroupNodes),'/FareGroup')) FareGroup
FROM GARY_PASS_XML tx,
TABLE(XMLSequence(Extract(Value(tx),'/FareSearchRS/FareGroup'))) FareGroupNodes
WHERE existsnode(value(tx),'/FareSearchRS/FareGroup') = 1

I have a table of XMLTYPE called gary_pass_xml. What kind of index can I create on the table to speed up this query.
SELECT (Extract(Value(FareGroupNodes),'/FareGroup')) FareGroup
FROM GARY_PASS_XML tx,
TABLE(XMLSequence(Extract(Value(tx),'/FareSearchRS/FareGroup'))) FareGroupNodes
WHERE existsnode(value(tx),'/FareSearchRS/FareGroup') = 1

Indexing table of XMLType

Hi
I have created an table in XML DB of type XMLType.
Can anyone tell me how I can index this table?
Oracle version is 9.2.0.3.0
Thanks

Omar
Thanks for the reply. This issue that I had was the table itself was of type XMLType.
I have now created the table with a column of XMLType to store the XML document in. This will then allow an index to be created on the XMLType column, thereby indexing the comple XML document.

Issues with using XMLType indexes against a table with XMLType column

I am attempting to use an XMLIndex with a Structured Component and not having too much luck. Not much data in metalink nor is the documentation very helpful:
http://download.oracle.com/docs/cd/E11882_01/appdev.112/e10492/xdb_indexing.htm#BCGHGIGC
The table DDL is as follows:
CREATE TABLE ECI_SCHEMA.REV_ITEM_EARN_DTL_VIRTUAL(
REV_ITEM_EARN_DTL_ID_NBR NUMBER(16,0) NOT NULL,
UNIQ_MSG_ID_NBR VARCHAR2(50) NOT NULL,
REV_ITEM_BILL_DTL_ID_NBR NUMBER(16,0),
PLAN_RACN_NBR NUMBER(10,0) NOT NULL,
INV_DTL_IMG SYS.XMLType NOT NULL,
NON_INV_DTL_IMG BLOB NOT NULL,
PART_KEY_CD GENERATED ALWAYS AS (MOD(PLAN_RACN_NBR,5)) VIRTUAL,
LAST_UPDT_TMSTP TIMESTAMP(6) NOT NULL,
INV_ID_NBR NUMBER(16,0),
ITEM_STATUS_CD VARCHAR2(1) DEFAULT 'A' NOT NULL
LOB (NON_INV_DTL_IMG) STORE AS NON_IDI_LOB (CHUNK 8192 PCTVERSION 10 CACHE)
TABLESPACE ECI_DATA
PARTITION BY RANGE (PART_KEY_CD)
PARTITION RIED_DAY0_PART
VALUES LESS THAN (1)
TABLESPACE ECI_DATA
PARTITION RIED_DAY1_PART
VALUES LESS THAN (2)
TABLESPACE ECI_DATA
PARTITION RIED_DAY2_PART
VALUES LESS THAN (3)
TABLESPACE ECI_DATA
PARTITION RIED_DAY3_PART
VALUES LESS THAN (4)
TABLESPACE ECI_DATA
PARTITION RIED_MAXVAL_PART
VALUES LESS THAN (MAXVALUE)
TABLESPACE ECI_DATA
XMLTYPE COLUMN "INV_DTL_IMG" STORE AS OBJECT RELATIONAL
XMLSCHEMA "someXdbDocument.xsd"
ELEMENT "revenueInvoice"
According to the documentation, I should be able to create a structured XMLIndex on the XMLType column with the following syntax:
SQL> create index eci_schema.rev_item_earn_dtl_virt_xmlix on eci_schema.rev_item_earn_dtl_virtual
2 (INV_DTL_IMG)
3 INDEXTYPE IS XDB.XMLIndex
4 parameters ('PATH TABLE RIED_PATH_TABLE')
5 local;
When I do this, I get the following error:
create index eci_schema.rev_item_earn_dtl_virt_xmlix on eci_schema.rev_item_earn_dtl_virtual
ERROR at line 1:
ORA-29958: fatal error occurred in the execution of ODCIINDEXCREATE routine
ORA-30959: The indexed column is not stored in CLOB.
What am I doing wrong? Based on the Oracle documentation, I was under the impression that 11.2 XMLIndex would work with Object Relational storage. Is this not the case?

CREATE INDEX ECI_SCHEMA.REV_ITEM_EARN_DTL_IX7
       ON ECI_SCHEMA.REV_ITEM_EARN_DTL
                  extractValue(inv_dtl_img, '/revenueInvoice/service/transportation/mstrTrkngNbr')
TABLESPACE ECI_REV_ITEM_EARN_DTL_IX7_ITS
LOGGING
PARALLEL(DEGREE 8 INSTANCES 1)
LOCAL
/Elements that occur at most once in each document can be indexed using extractValue(). Despite the fact that the index appears to be a functional index, when we create the index we automatically re-write the create index into a normal btree index on the column that contains the value for the element identified by the xpath.
Eg in the case of a functional index based on extractValue, defined on XMLType using Object relational storage, with an xpath that identifies a node that occurs at most once in each document is not a functional index, it's re-written into a plain old vanilla btree index. You can actually check this by looking in the system tables
Eg
SQL> connect system/oracle
Connected.
SQL> select table_name, index_name from all_indexes where owner = 'OE' and table_name = 'PURCHASEORDER';
TABLE_NAME                     INDEX_NAME
PURCHASEORDER                  LINEITEM_TABLE_MEMBERS
PURCHASEORDER                  ACTION_TABLE_MEMBERS
PURCHASEORDER                  SYS_C0011037
SQL> alter session set current_schema = OE
2 /
Session altered.
SQL> create unique index PO_REF_INDEX on PURCHASEORDER (extractValue(object_value,'/PurchaseOrder/Reference'));
Index created.
SQL> set lines 250
SQL> select index_name, index_type from all_indexes where owner = 'OE' and table_name = 'PURCHASEORDER';
INDEX_NAME                     INDEX_TYPE
PO_REF_INDEX                   NORMAL
LINEITEM_TABLE_MEMBERS         NORMAL
ACTION_TABLE_MEMBERS           NORMAL
SYS_C0011037                   NORMAL
SQL> select * from dba_ind_expressions where table_name = 'PURCHASEORDER' and index_owner = 'OE'
2 /
no rows selectedFrom the above we can see that the index created on extractValue has been re-written in a plain old vanilla BTREE index, and there is no definition for it in dba_ind_expressions So assuming you were able to create the index and insert the data you should find that your index is not a functional index.
]

Create Index on a huge table

Hi,
We have a huge table and there is no index on this table, I want to create index on this table, we are working on Oracle 11g/Linux.
Our business users are frequently accessing this table and select statement taking very long time.
Please let me know which index type would be best suited for this and what would the command to create index on it.
Would appreciate your assistance.
Regards.

>
We have a huge table and there is no index on this table, I want to create index on this table, we are working on Oracle 11g/Linux.
Our business users are frequently accessing this table and select statement taking very long time.
Please let me know which index type would be best suited for this and what would the command to create index on it.
>
We need loads of information to suggest anything useful
a) What database version is yours? (if 11g, you have good more options)
b) What type of environment is it? OLTP or Warehouse?
c) How big is the table?
d) How many distinct values are there in that column that you want to index?
e) Would this index undergo lots of inserts/deletes/updates? That is, is this table used mainly for querying or will it undergo continous inserts/updates/deletes?
In case your environment is warehouse type where you load once and then mainly used for queries and more importantly, if that column has very few distinct columns (typical example is a GENDER column where you have only two distinct values), you will be largely benefitted from BITMAP index. If it's an OLTP environment where multiple processes will be inserting into the table, you never ever go near BITMAP index but do only B-Tree index.
Finally, have you arrived at a concrete reason on why you want to build that index now rather than when you designed the table? If you don't need an index for sure, better not have it. If you are on 11g, you can have INVISIBLE index.
Also, if it's a very large table, you may create the index nologging to avoid loads of redo generation (not recommended on production environment though). But you have to be aware that in the event of disaster recovery you will have to recreate the index after you restore the database. Also if you are on Dataguard environment, you have to take necessary precautions while doing NOLOGGING operations.
Edited by: user12035575 on Sep 11, 2011 12:37 PM

ORA-00904 on create table with xmltype column

Hi,
I am trying to create a table with syntax
CREATE TABLE ss_test(docid integer primary key, content varchar2(4000),acl XMLType)
XMLType column acl store as object relational
XMLSchema "acl.xsd" element "acl"
varray xmldata."ace" store as table ace_tab;
and getting ORA-00904.
acl.xsd is registered as
begin
dbms_xmlschema.registerschema('acl.xsd',
' <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xdb="http://xmlns.oracle.com/xdb">
<xs:element name="acl" xdb:SQLType="ACL_TYPE">
<xs:complexType>
<xs:sequence>
<xs:element name="ace" maxOccurs="100">
<xs:complexType>
<xs:attribute name="id" type="xs:integer"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>',true,true,false,false);
end;
Couldnt figure out whats wrong with the syntax. Any pointers ?
Thanks,
Rakesh

Hmmmm ... I don't know if I should smile or frown with the implication that I am an OO guy :D :D
Most of my colleagues when I started working as a software engineer, treated me as too low-level because of my C background (started doing C in 1985).
In my last job, my colleagues hated my guts because I was asking them to squeeze every bit of performance out of C++ by using STL which is definitely not OO (although C++ is).
My current colleagues treat me as a DB guru (which I most definitely am not) and they overlook/forget the fact that most of them use Java libraries in their projects, that I wrote for them !
I am inclined to believe that I do not fall into any category in the end...
The only thing I am for sure - and I am proud of it - is inquisitive. I want to know everything there is about the tools I use, and so I end up spending hours and hours investigating... (Microsoft found that out the hard way when I filed 16 bug reports in 8 days when Visual C++ 6 came out ! Not that it hurt them though...)
This is where my confession ends (and my working on the XML validator starts...)
Καληνύχτα Marco
Philip (Φίλιππος in Greek)
PS: I did not follow the last solution anyway. I just wanted to verify its operability ;)

ODI 10g Load table havfing XMLTYPE as one of the data type

I'm trying load data from source to target(Both Oracle) same table. The table has XMLTYPE as one of the data type. I can load the data, if I exclude that one particular column.
Is there any way to load the data from that XMLTYPE column as well? Please provide your input.
Source and traget has the same table structure.
Version: ODI 10G
below is the sample table structure.
CREATE TABLE APPLICATION
APPLID VARCHAR2(20 BYTE) NOT NULL,
JOBTYPE VARCHAR2(20 BYTE),
USRID VARCHAR2(20 BYTE) NOT NULL,
APPDOC SYS.XMLTYPE,
APPLSTATUS VARCHAR2(30 BYTE),
APPLDATE DATE
Thanks

Hi Pankaj,
Remember that 1 character is not equal to 1 byte anymore while numbers/hexadecimals are still.
So, if you have structures that are a mixture of characters and integers/hexadecimals etc, you can not move data from structure to structure as easily as before.
In code you mentioned:
LOOP AT L_TAB INTO L_REC.
APPEND L_REC TO LIST_TAB.
ENDLOOP.
Avoid moving directly from L_REC to LIST_TAB. You can try to define a work area (WA_TAB) for LIST_TAB and use a MOVE-CORRESPONDING from L_REC to the WA_TAB. Then append WA_TAB.
If the field names from L_REC do not match the field names in LIST_TAB, you can manually move each field value to the correct field in the work area.
Reward points if this solves your issue

Creating a bit map index on a partitioned table

Dear friends,
I am trying to create a bitmap index on a partitioned table but am receiving the following ORA error. Can you please let me know on how to create a local bit map index as the message suggests?
ERROR at line 1:
ORA-25122: Only LOCAL bitmap indexes are permitted on partitioned tables
Trying to use the keyword local in front leads to wrong syntax.
Thanks in advance !!
Somnath

ORA-25122 Only LOCAL bitmap indexes are permitted on partitioned tables
Cause: An attempt was made to create a global bitmap index on a partitioned table.
Action: Create a local bitmap index instead
Example of a Local Index Creation
CREATE INDEX employees_local_idx ON employees (employee_id) LOCAL;
Example is about btree and I think it will work for bitmap also.

Create/drop index on a busy table

Hello,
It's kind-a of a funny question but how do you create or drop a index on a very busy table? (by making the users wait...)
I tried:
lock table <table> in exclusive mode
then in another session (session2)
update <table> set col1 = 'a';
(this session now waits)
then back a the first session:
create index bla on <table> (col1);
And what happens is that the lock is released immediatelly, and in session2 the update updates and I get the standard "RESOURCE BUSY" error.
Any ideas on how to do that ?
Thanks

Jozsef wrote:
Hi there,
I have done similar things couple of times before and I have used a pretty good method to obtain a rough (and it was really a rough, but enough) estimation.
Sorry folks, it does not work properly for create index...this method only works for SELECT statments, SO IGNORE IT :(
It nearly works in 10g:
| Id | Operation              | Name | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | CREATE INDEX STATEMENT |       | 10000 | 40000 |    10   (0)| 00:00:01 |
|   1 | INDEX BUILD NON UNIQUE| T1_I1 |       |       |            |          |
|   2 |   SORT CREATE INDEX    |       | 10000 | 40000 |            |          |
|   3 |    TABLE ACCESS FULL   | T1    | 10000 | 40000 |     6   (0)| 00:00:01 |
Note
   - estimated index size: 196K bytesThe "Note" tells you Oracle's estimate of the final space allocation needed for the index. There are various reasons why the estimate is not very accurate, and why it's not a good estimate of the space requirement in the TEMP tablespace, but it gives you a figure that is probably in the right ballpark (factor of 2 out, either way, probably).
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
"For every expert there is an equal and opposite expert."
Arthur C. Clarke

Create an index on a huge table

hi gurus
I am going to create an index on a very large table(194GB) with the temporary tablespace size is 80G.
I am afraid that during the index creation the temporary tablespace is not enouth to hold the data needed
to create the index,because i only have 80g in temporary tablespace. How do i estimated the size i need to create a such large index and is there an effcient way to do such index creation?
thank u in advance.

Jozsef wrote:
Hi there,
I have done similar things couple of times before and I have used a pretty good method to obtain a rough (and it was really a rough, but enough) estimation.
Sorry folks, it does not work properly for create index...this method only works for SELECT statments, SO IGNORE IT :(
It nearly works in 10g:
| Id | Operation              | Name | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | CREATE INDEX STATEMENT |       | 10000 | 40000 |    10   (0)| 00:00:01 |
|   1 | INDEX BUILD NON UNIQUE| T1_I1 |       |       |            |          |
|   2 |   SORT CREATE INDEX    |       | 10000 | 40000 |            |          |
|   3 |    TABLE ACCESS FULL   | T1    | 10000 | 40000 |     6   (0)| 00:00:01 |
Note
   - estimated index size: 196K bytesThe "Note" tells you Oracle's estimate of the final space allocation needed for the index. There are various reasons why the estimate is not very accurate, and why it's not a good estimate of the space requirement in the TEMP tablespace, but it gives you a figure that is probably in the right ballpark (factor of 2 out, either way, probably).
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
"For every expert there is an equal and opposite expert."
Arthur C. Clarke

After creating a table, how do I type outside of it? I can't get a cursor to come up.

After creating a table, how do I type outside of it? I can't get a cursor to come up.

Barker,
If by "outside" you mean "on the right or left of" a table, you must make the Table a Floating Object to do that.
If you must use Inline Tables, you can do this:
Add a Floating Text Box with the text that needs to be "outside" the table. Arrange, then Group the Text Box with the Floating Table, and then set the Group to Inline.
Jerry

How can I create index(uniqie index) for a existed table?

Hi guys,
I want to create a index for a existed table, it should be unique index. I did it using se11, "indexes," and select the radio button "unqiue index", of course the fields as well. But when I activate it, I get a waring and therefore can not create this index. But if I select radio button "non-uniqe index", it works.
However I have to reate a unqiue index.
How can I do it?
Thanks in advance
Regards,
Liying

HI Wang
You can create your index via SE11, enter the table name, click change, choose Go To, Indexes. Here create your index with the key fields that you want. To use the index, your select statement WHERE clause, you must have the key fields of the index in the order that they appear in the index. The "optimizer" will choose the index depending on your fields of the WHERE clause.
One thing to remember is that when you create indexes for tables, the update or insert of these tables may have a slower response then before, I for one have never seen a big problem as of yet.
this Document may help u on primary and secondary indexes :
http://jdc.joy.com/helpdata/EN/cf/21eb20446011d189700000e8322d00/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eb47446011d189700000e8322d00/content.htm
If it helps Reward the points
Regards,
Rk
Message was edited by:
Rk Pasupuleti

Create a Table Dynamically in WEB Dynpro Java with diferent type of column

Hi everyone, I have a question if is possible to create a table dynamically in Web Dynpro Java?, depending of the RFC consults create the rows dynamically, ,this table must have diferent type of columns, for example link column (when the user click this link execute an action and show a adobe interactive form in another view), image column (show an image depending of the information)
Thank you everyone
Atte Israel

Hello,Israel.
Yes , it is possible through dynamic programming in wdModify of the View.
You can do this ,for example, using cell variants.
IWDTable tab = (IWDTable) view.getElement("TABLE_NAME");
IWDTableStandardCell cellV= (IWDTableStandardCell) view.createElement(IWDTableStandardCell.class,"TableStandardCell"+i);
cellV.setVariantKey("NotEditableVariant");
cellV.setCellDesign((WDTableCellDesign)wdContext.nodeTableDaysTitle().currentTableDaysTitleElement().getAttributeValue("CellDesign"+i));
IWDTextView textViewi= (IWDTextView) view.createElement(IWDTextView.class,"TextView"+i); // -- here you control the type of the object that is displayed in the cell
textViewi.bindText(dayAttrib);
cellV.setEditor(textViewi);
tabColumn.addCellVariant(cellV);
tab.addGroupedColumn(tabColumn,tab.numberOfGroupedColumns());
Using this code you can control even specific cells in the table and not only columns.
Hope this helps you,
Constantine

How to create indexes using CREATE TABLE statement

Hi,
Can anyone please tell me how to create indexes using CREATE TABLE staement? This point is part SQL Expert exam (1Z0-047) and please guide me to use which books for this particular exam.
Thanks in advance.

Can anyone please tell me how to create indexes using CREATE TABLE staement?e.g. creating a primary key or a unique constraint will generate indexes along with the create table syntax:
SQL> create table t (a integer primary key, b integer unique)
Table created.
SQL> select   index_name, index_type, uniqueness
from   user_indexes
where   table_name = 'T'
INDEX_NAME                     INDEX_TYPE                  UNIQUENES
SYS_C0016575                   NORMAL                      UNIQUE
SYS_C0016574                   NORMAL                      UNIQUE
2 rows selected.

Index type created as "TABLE OF XMLTYPE?"

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