Linking Tables to Oracle Views

I am not able to see the PKs in MS-ACCESS after creating a linked table to a view within Oracle. The views were created using Select * from the base table which is a materialized view. No WHERE clause in the view.
Also, why do I get an error when creating a linked table to a materialized view in Oracle. I am getting the following error when creating the linked table:
"Invalid filed definition M_ROW$$ in definition of index or relationship.
Thanks,
Todd Schaberg
[email protected]

This is a known problem. We're trying to work with the materialized views folks to get this resolved.
As a workaround, you can create a view of the materialized view and link to that.
Justin Cave
ODBC Development

Similar Messages

How to programmatically connect to MS Access linked tables to oracle ?

Hi,
I have database in MS Access which has linked table in oracle database.
But I am not able to connect to that linked table through java program .
It gives me java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] ODBC--connection to 'servername' failed.
Can anybody suggest me how to tackle this problem?

This blog post should have most (if not all) of what you need:
http://blogs.technet.com/b/heyscriptingguy/archive/2009/02/16/how-can-i-use-windows-powershell-to-create-an-office-access-database.aspx
One thing to watch out for is the db provider for the connection string. The "Jet Engine" has been superseded by
ACE.

How to see the linked table in oracle 8.0

hi,
i am using oracle 8.0, i have some 8 to 9 tables in it, some of them are linked, is there any way i could see the linked tables, if you do know any utility pls let me know.
regards
user456932

i am using oracle 8.0, i have some 8 to 9 tables in
it, some of them are linked, is there any way i could
see the linked tablesI understand from your question that you are refering to Referential Integrity. I.e you have Parent Tables with Primary Keys and Child Tables linked with Foreign Keys.
It is easier to use GUI tools (OEM, Toad etc) to browse through them. In Toad for instance as a start, you can view the SQL Model. There are other Modelling tools you can use as well.
For the start, you can check USER_CONSTRAINTS and other related dictionary views to find them.
Here is a small example:
select      constraint_name
     ,constraint_type
     ,table_name
     ,r_constraint_name
     ,delete_rule
     ,status
from user_constraints;
The constraint_type will show P (Primary Key), C (Check), R (Referential) etc
However, you can use queries to find Object Dependencies in the Database.
Read more from the SQL Reference Manual to get more knowledge in this area.

Query DB2 tables from oracle using normal view

This is with regard to querying db2 tables using oracle views. The view is created using dblink. The querying is not an one time activity.querying will be done once in a day. Can i use normal view (will it work ) or should i use materialised view. will i be able to view the added records in db2 table using normal view?
thanks,
vinodh

Vinodh2 wrote:
This is with regard to querying db2 tables using oracle views. The view is created using dblink. The querying is not an one time activity.querying will be done once in a day. Can i use normal view (will it work ) or should i use materialised view. will i be able to view the added records in db2 table using normal view?How can the SQL select statement via a dblink not work for a view, but the same SQL select statement work for a materialised view?
Do you think the database link or remote database care whether the select SQL that hits it, comes from a PL/SQL procedure, a view, a materialised view, a job or whatever else? It has no idea what/who is behind that select SQL - and nor does it care.
As for the benefits of a view vs. a materialised view - that depends on the requirements for needing to use that foreign database's data in the local database.

Problem to acces linked table from Microsoft Access 2010

We have a couple of MS access databases that have linked tables from oracle Database. When the user try to view the content of the table it gets an error saying that the table or view does not exist.
But if i create a new MS access db and link the same tables with the same user, we are able to view the content of the table. So it does not seem to be related to permissions...
If we delete the linked table and try to re-attached them we got the same error
Anyone have a clue ?

It looks like this is a question that should be addressed in our ORACLE ODBC community, since it has to to with MS Access links to an Oracle DB via (I presume) an Oracle ODBC driver.
This community is for Oracle Heterogeneous Gateways. That is, Oracle DB links into 3rd party databases.
Thanks!
Matt

Oracle equals_path condition NOT working with table and materialized view

The user i am using is xdb with dba role.
1.When i try to use the statement
SELECT PATH FROM xdb.path_VIEW
WHERE
EQUALS_PATH(res, '/home/OE/PurchaseOrders/2002')=1
the result is
/home/OE/PurchaseOrders/2002
2. When i drop the path_view and recreated it like materialized view with statement
create MATERIALIZED view path_view as
select /*+ ORDERED */ t2.path path, t.res res,
xmltype.createxml(xdb.xdb_link_type(NULL, r2.xmldata.dispname, t.name,
h.name, h.flags, h.parent_oid, h.child_oid),
'http://xmlns.oracle.com/xdb/XDBStandard.xsd', 'LINK') link,
t.resid
from ( select xdb.all_path(9999) paths, value(p) res, p.sys_nc_oid$ resid,
p.xmldata.dispname name
from xdb.xdb$resource p
where xdb.under_path(value(p), '/', 9999)=1 ) t,
TABLE( cast (t.paths as xdb.path_array) ) t2,
xdb.xdb$h_link h, xdb.xdb$resource r2
where t2.parent_oid = h.parent_oid and t2.childname = h.name and
t2.parent_oid = r2.sys_nc_oid$
then the equals_path condition STOP working !!!
3. The same experiment, but i recreate it like table
create table path_view as .... using the rest of the statement ...
Can someone help me to understand why equals_path is NOT working on table and materialized view !

Thanks Jonah. I was under the impression that I already had it but seems like it has to be a direct priv - thru a role doesn't work.
I granted the reqd privs and then it worked fine. Thx for your help!

View for a network node or link table

Can a view be used for a nework node or link table? The process sdo_net.validate_network hangs when I try to validate a network based on views for the node and link tables.

I am using a logical model. The sql statement (checking link/node relationship) that hangs is:
select count(a.link_id) from vlinks a
where not exists
select * from vnodes b
where b.node_id = a.start_node_id or b.node_id = a.end_node_id
I gather there is a concurrency issue with my links view because it joins a table with itself. I have a link table that has the start and end nodes defined on two records. Here is my view script:
create or replace view vlinks
(link_id, link_name, start_node_id, end_node_id, link_type, active, link_level, cost, parent_link_id)
as
select a.id, 'Link '||a.id, a.nodeid, b.nodeid, 'simple', 'Y',1,0,''
from vnodes a, vnodes b
where a.seq=1 and b.seq>1 and a.id = b.id
I can create tables from my views and validate them successfully through sdo_net.validate_nodes_schema, sdo_net.validate_links_schema, and sdo_net.validate_network.
I can analyze the network model through the Java API using the reachable nodes, shortest path, and spanning tree methods without any problems.
I guess I'll validate my view links by counting the total number of links and subtracting the number of links joined successfully at the start and end nodes - if 0 then all links are valid. E.g.:
select count(link_id) from
select link_id from vlinks
minus
select a.link_id from vlinks a, vnodes b, vnodes c
where a.start_node_id = b.node_id
and a.end_node_id = c.node_id

ORA-02070: Error when updating a SQL Server table thru an Oracle View

I have a SQL Server table TIMESHEET which contains a number of VARCHAR and NUMERIC columns plus a DATETIME column.
Only the DATETIME column is giving me trouble.
On the ORACLE side I have a view which selects from the SQL Server table but in order to get the SELECT to work, I had to either put a CAST or TO_DATE function call around the DATETIME field
Below is the relevant part of the 2 view definitions I have tried
create view TIMESHEET as
SELECT
"TsKeySeq" as TS_KEY_SEQ,
"EmployeeNo" as EMPLOYEE_NO,
CAST("PeriodEnding" AS DATE) as PERIOD_ENDING,
. . . (more columns - not relevant)
FROM [email protected];
An update to the view generates this message
ORA-02070: database OLEMSQLPSANTDAS6 does not support CAST in this context
create view TIMESHEET as
SELECT
"TsKeySeq" as TS_KEY_SEQ,
"EmployeeNo" as EMPLOYEE_NO,
TO_DATE("PeriodEnding") as PERIOD_ENDING,
. . . (more columns - not relevant)
FROM [email protected];
An update to the view generates this message
ORA-02070: database OLEMSQLPSANTDAS6 does not support TO_DATE in this context
If I don't include either the TO_DATE() or CAST() then I get
Select Error: ORA-28527: Heterogeneous Services datatype mapping error
ORA-02063:preceding line from OLEMSQLSANTDAS6
Does anyone have any idea how to update a SQL Server DATETIME column thru an ORACLE view?

You can't cast accross heterogenious databases and there is no need to. HSODBC treats SQL Server DATETIME column as DATE. For example, I have SQL Server table:
CREATE TABLE [Ops].[T_JobType](
     [JobType] [varchar](50) NOT NULL,
     [JobDesc] [varchar](200) NULL,
     [InsertDt] [datetime] NOT NULL CONSTRAINT [InsertDt_00000006] DEFAULT (getdate()),
     [InsertBy] [varchar](128) NOT NULL CONSTRAINT [InsertBy_00000006] DEFAULT (user_name()),
     [LastUpdated] [datetime] NOT NULL CONSTRAINT [LastUpdated_00000006] DEFAULT (getdate()),
     [LastUpdatedBy] [varchar](128) NOT NULL CONSTRAINT [LastUpdatedBy_00000006] DEFAULT (user_name()),
CONSTRAINT [T_JobType_PK] PRIMARY KEY CLUSTERED
     [JobType] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 100) ON [DATA01FG]
) ON [DATA01FG]Now on Oracle side I do:
SQL> desc "Ops"."T_JobType"@pbods
Name                                      Null?    Type
JobType                                   NOT NULL VARCHAR2(50)
JobDesc                                            VARCHAR2(200)
InsertDt                                  NOT NULL DATE
InsertBy                                  NOT NULL VARCHAR2(128)
LastUpdated                               NOT NULL DATE
LastUpdatedBy                             NOT NULL VARCHAR2(128)
SQL> select "InsertDt" from "Ops"."T_JobType"@pbods;
InsertDt
18-AUG-08
09-OCT-08
22-OCT-09
18-AUG-08
19-NOV-08
SQL> SY.

Simple Query in Oracle Linked Table in MS Access causes full table scan.

I am running a very simple query in MS ACCESS to a linked Oracle table as follows:
Select *
From EXPRESS_SERVICE_EVENTS --(the linked table name refers to EXPRESS.SERVICE_EVENTS)
Where performed > MyDate()
or
Select *
From EXPRESS_SERVICE_EVENTS --(the linked table name refers to EXPRESS.SERVICE_EVENTS)
Where performed > [Forms]![MyForm]![Date1]
We have over 50 machines and this query runs fine on over half of these, using an Oracle Index on the "performed" field. Running exactly the same thing on the other machines causes a full table scan, therefore ignoring the Index (all machines access the same Access DB).
Strangely, if we write the query as follows:
Select *
From EXPRESS_SERVICE_EVENTS
Where performed > #09/04/2009 08:00#
it works fast everywhere!
Any help on this 'phenominon' would be appreciated.
Things we've done:
Checked regional settings, ODBC driver settings, MS Access settings (as in Tools->Options), we have the latest XP and Office service packs, and re-linked all Access Tables on both the slow and fast machines independantly).

Primarily, thanks gdarling for your reply. This solved our problem.
Just a small note to those who may be using this thread.
Although this might not be the reason, my PC had Oracle 9iR2 installed with Administratiev Tools, where user machines had the same thing installed but using Runtime Installation. For some reason, my PC did not have 'bind date' etc. as an option in the workarounds, but user machines did have this workaround option. Strangely, although I did not have the option, my (ODBC) query was running as expected, but user queries were not.
When we set the workaround checkbox accordingly, the queries then run as expected (fast).
Once again,
Thanks

Why data change in linked table in Access - link from Oracle DB

Can someone please help me to solve this situation? I try to find out why data is changed from Oracle to Access. I must come back to this thread because lot of data in my Oracle database is defined as NUMBER(22), and I am using Access heavily.
Here is the problem:
In Access, I created ODBC connection (System DSN) to Oracle 9.2 database by using Oracle driver (NOT Microsoft ODBC for Oracle). Then I linked tables from Access with the Oracle table. What happens is that the number in Access linked table is displayed as a scientific number. Is there a way that I can preserve whatever I have in Oracle database?
For example:
Comp_ID in Oralce is defined as NUMBER(22) = 40000000000324003; In Access it looks like this 4.0000000000324E+16.
What I have in my system:
1- Oracle 9.2 client
2- Oracle driver
3- Access 2003
4- Jet - SP 8

Can someone please help me to solve this situation? I try to find out why data is changed from Oracle to Access. I must come back to this thread because lot of data in my Oracle database is defined as NUMBER(22), and I am using Access heavily.
Here is the problem:
In Access, I created ODBC connection (System DSN) to Oracle 9.2 database by using Oracle driver (NOT Microsoft ODBC for Oracle). Then I linked tables from Access with the Oracle table. What happens is that the number in Access linked table is displayed as a scientific number. Is there a way that I can preserve whatever I have in Oracle database?
For example:
Comp_ID in Oralce is defined as NUMBER(22) = 40000000000324003; In Access it looks like this 4.0000000000324E+16.
What I have in my system:
1- Oracle 9.2 client
2- Oracle driver
3- Access 2003
4- Jet - SP 8

Oracle 11gr2 ODBC - error updating linked table (Ora 01722 and 01461)

Good day folks,
My shop has just moved to 11gR2 client and server. We were previously using 11gR1 with no issues (and before that, 10, 9, 8, etc). After moving from 11r1 to 11r2, we began getting errors from some of our MS Access ODBC applications with linked Oracle tables. The error would occur when executing an UPDATE statement that had a table join in it. Here is a simple example:
UPDATE TableX SET TableX.Fieldx = “valuex” WHERE TableX.Fieldx = TableZZZ.Fieldx AND TableZZZ.fieldzzz is not null
Currently, after moving to 11r2 client, an update query like the one above will error out in one of the following ways:
- odbc -- update on a linked table failed - Ora 01722 invalid number
- ORA-01461: can bind a LONG value only for insert into a LONG column
- Or it will say that the records were not updated because they are locked.
In some cases, I have noticed some records being updated that were not supposed to be updated.. records that the where clause was meant to exclude. That is very unsettling.
I understand that perhaps an update statement shouldn’t be joining table and perhaps it should be done over a couple calls, but the reality is – this code is out there in abundance and if there is a solution that doesn’t amount to my changing all this code or reverting to 11gR1, I would love to find it.
Since the query runs fine using SQL Plus and also runs fine if I run it against a local table in Access rather than a linked Oracle table – I figured the issue was possibly with the Oracle 11r2 ODBC driver. So, I switched the Oracle ODBC driver (sqora32.dll version 11.2.0.1 with version 11.1.0.7), and the problem went away.
I believe this verifies the issue resides with Oracle ODBC version 11.2.0.1. Can anyone help? I'm assuming it's not particularly wise to simply swap sqora32.dll files on all my clients machines, so I am searching for an actual solution here instead.
I also did performed ODBC tracing to see what Access is handing to the Oracle ODBC driver. I then used database or SQLNet tracing to see what the ODBC driver was handing off to SQLNet/database.
The results are in the following post:
Thanks guys!!

SQLNET TRACE
If you want an Admin level trace, I can have one right away.
(856) [13-JUN-2010 22:11:00:657] nsopen: opening transport...
(856) [13-JUN-2010 22:11:00:657] nttcni: Tcp conn timeout = 60000 (ms)
(856) [13-JUN-2010 22:11:00:657] nttcni: trying to connect to socket 1364.
(856) [13-JUN-2010 22:11:00:688] nttcni: connected on ipaddr 142.139.221.62
(856) [13-JUN-2010 22:11:00:688] nttcon: set TCP_NODELAY on 1364
(856) [13-JUN-2010 22:11:00:688] nsopen: transport is open
(856) [13-JUN-2010 22:11:00:688] nsnainit: inf->nsinfflg[0]: 0x61 inf->nsinfflg[1]: 0x61
(856) [13-JUN-2010 22:11:00:688] nsopen: global context check-in (to slot 0) complete
(856) [13-JUN-2010 22:11:00:688] nscon: doing connect handshake...
(856) [13-JUN-2010 22:11:00:688] nscon: sending NSPTCN packet
(856) [13-JUN-2010 22:11:00:688] nscon: sending 233 bytes connect data
(856) [13-JUN-2010 22:11:00:688] nsdo: 233 bytes to NS buffer
(856) [13-JUN-2010 22:11:00:719] nscon: got NSPTRS packet
(856) [13-JUN-2010 22:11:00:719] nscon: sending NSPTCN packet
(856) [13-JUN-2010 22:11:00:719] nscon: sending 233 bytes connect data
(856) [13-JUN-2010 22:11:00:719] nsdo: 233 bytes to NS buffer
(856) [13-JUN-2010 22:11:00:735] nscon: got NSPTAC packet
(856) [13-JUN-2010 22:11:00:735] nscon: connect handshake is complete
(856) [13-JUN-2010 22:11:00:735] nscon: nsctxinf[0]=0x61, [1]=0x21
(856) [13-JUN-2010 22:11:00:735] nsnainconn: inf->nsinfflg[0]: 0x61 inf->nsinfflg[1]: 0x21
(856) [13-JUN-2010 22:11:00:735] nsnasend: bytes to send: 158
(856) [13-JUN-2010 22:11:00:735] nsdo: 158 bytes to NS buffer
(856) [13-JUN-2010 22:11:00:735] nsnareceive: buffer address: 0x132c34 bytes wanted: 2048
(856) [13-JUN-2010 22:11:00:735] nsnareceive: calling NS to receive 2048 bytes into address 0x132c34
(856) [13-JUN-2010 22:11:00:766] nsdo: 153 bytes from NS buffer
(856) [13-JUN-2010 22:11:00:766] nsnareceive: received 153 bytes
(856) [13-JUN-2010 22:11:00:766] nsnareceive: no more data to receive - returning
(856) [13-JUN-2010 22:11:00:766] nsnareceive: total bytes received: 153
(856) [13-JUN-2010 22:11:01:063] nsnasend: bytes to send: 77
(856) [13-JUN-2010 22:11:01:063] nsdo: 77 bytes to NS buffer
(856) [13-JUN-2010 22:11:01:063] nsnareceive: buffer address: 0x132c34 bytes wanted: 2048
(856) [13-JUN-2010 22:11:01:063] nsnareceive: calling NS to receive 2048 bytes into address 0x132c34
(856) [13-JUN-2010 22:11:01:079] nsdo: 64 bytes from NS buffer
(856) [13-JUN-2010 22:11:01:079] nsnareceive: received 64 bytes
(856) [13-JUN-2010 22:11:01:079] nsnareceive: no more data to receive - returning
(856) [13-JUN-2010 22:11:01:079] nsnareceive: total bytes received: 64
(856) [13-JUN-2010 22:11:01:079] naun5authent: Authentication type is 0
(856) [13-JUN-2010 22:11:01:079] nsnasend: bytes to send: 1862
(856) [13-JUN-2010 22:11:01:079] nsdo: 1862 bytes to NS buffer
(856) [13-JUN-2010 22:11:01:079] nsnareceive: buffer address: 0x132c34 bytes wanted: 2048
(856) [13-JUN-2010 22:11:01:079] nsnareceive: calling NS to receive 2048 bytes into address 0x132c34
(856) [13-JUN-2010 22:11:01:141] nsdo: 165 bytes from NS buffer
(856) [13-JUN-2010 22:11:01:141] nsnareceive: received 165 bytes
(856) [13-JUN-2010 22:11:01:141] nsnareceive: no more data to receive - returning
(856) [13-JUN-2010 22:11:01:141] nsnareceive: total bytes received: 165
(856) [13-JUN-2010 22:11:01:141] nsnasend: bytes to send: 33
(856) [13-JUN-2010 22:11:01:141] nsdo: 33 bytes to NS buffer
These lines are present using both version of sqora32.dll
(856) [13-JUN-2010 22:11:01:141] nszgwop: SQLNET.WALLET_OVERRIDE not found, using default.
(856) [13-JUN-2010 22:11:01:157] nscontrol: Vect I/O support: 0(856) [13-JUN-2010 22:11:01:391] nioqrc: Recieve: returning error: 3111
(856) [13-JUN-2010 22:11:01:391] nsdo: sending NSPTMK packet
(856) [13-JUN-2010 22:11:01:391] nserror: nsres: id=0, op=77, ns=12630, ns2=0; nt[0]=0, nt[1]=0, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
These lines only happen when using the R2 version of sqora32.dll
(856) [13-JUN-2010 22:11:01:719] nioqrc: Recieve: returning error: 3111
(856) [13-JUN-2010 22:11:01:719] nsdo: sending NSPTMK packet
(856) [13-JUN-2010 22:11:01:860] nserror: nsres: id=0, op=0, ns=12630, ns2=0; nt[0]=0, nt[1]=0, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
(856) [13-JUN-2010 22:21:03:782] nstimarmed: no timer allocated

Linking Table to view

Pulling my hair out here - how do I link a Table to a View?

Please get a book on basic RDBMS. The term "link" is from 1970's network databases and refers to simple pointer chains between records (rows are not records!) used for traversals. If you meant "join", then a VIEW is merely a virtual
table and you use it like any other table -- reference it by name and let the SQL decide how to handle the physical access.
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

How to create view for xmltype table in oracle

hi:
Can some one help me how to create view for xmltype table in oracle?
XMLType do not have column
Sem

Thank you !!
I read it and become very hard to implement what I want to do.
Can you give me example please?
My main goal to create view for xmltype table is to XQuery the XML data?
Do you have any other suggestion?
Please help
Ali_2

Reset changes in view link table when cancel popup

Hi,
I'm using jdeveloper 11.1.2.3.0
I have a form with a table which I edit with a popup.
inside this popup I have a view link table.
On cancel the popup I would like to clear the changes that were made in the view link table.
I was trying this code:
public void popupCancelListener(PopupCanceledEvent popupCanceledEvent) {
        DCIteratorBinding it= getBindings().findIteratorBinding("MyViewLinkIterator");
        ViewObject vo = it.getViewObject();
        vo.clearCache();
        vo.executeQuery();
But it didn't work, when I open the popup again I see the changes that were made in the view link.
they weren't reset.
Any idea?
Thanks a lot!

It doesn't help.
As I check, If I'm creating a new row
after
vo.clearCache();
vo.executeQuery();
the row is still existing.
How could it happen?

URGENT: CR2011 Unable to see Linked Tables (Viewing Links)

In select expert tables are listed but when clicking on the links tab the tables do not appear. This occurs on tables created in CR2010 (with links appearing) and opened in 2011 AND with new reports created in 2011. Service Pak download did not fix problem.

Thanks for your reply. We are using SQL Server 2008 databases. I would think that this would not be a problem with CR2011 since we can see the linking tables in a CR Version 10 install. The other thing I noticed is that the linking icon does not show up as it does in the other install so I'm thinking that it might be a driver issue or an install issue?
Also tried to right click on the Options but the only thing close to our problem is the Smart-Linking which I turned on with no results. If you click on Order Link you can see the SQL links (not in graphic form) but can't add or delete anything. Some of our linking can be quite complex so we need to be able to drag and drop the links.
I would think that the product would work the same as in previous versions.
Thanks!

Linking Tables to Oracle Views

Similar Messages

Maybe you are looking for