Database link for BLob

Hi,
I currently using oracle9i(9.2). Can I create database link to copy "blob" data?
Ken

you have to consider that Binary LOBS are not inside the database. In the database is only the pointer to that external file.
Conclusion : you can not do that. You have to copy it with OS commands and after to insert it in the database.
Joel P�rez

Similar Messages

Creating a Database link for a user

Hello All,
I am trying to create a database link for one of my users.
When I create it as sysdba the link gets created in the SYS schema which tells me that my syntax is working/fine.
But when I ALTER my SESSION and set my CURRENT_SCHEMA = <USER_NAME> I get ORA-00990: missing or invalid privilege
So I tried granting the user CREATE DATABASE LINK, CREATE PUBLIC DATABASE LINK, and DROP PUBLIC DATABASE LINK.
Same error.
Any ideas what I am missing?
Thanks,
Craig

CraigBoyd wrote:
Hello All,
I am trying to create a database link for one of my users.
When I create it as sysdba the link gets created in the SYS schema which tells me that my syntax is working/fine.
But when I ALTER my SESSION and set my CURRENT_SCHEMA = <USER_NAME> I get ORA-00990: missing or invalid privilege
So I tried granting the user CREATE DATABASE LINK, CREATE PUBLIC DATABASE LINK, and DROP PUBLIC DATABASE LINK.
Same error.
Any ideas what I am missing?
Thanks,
Craigyou need to create a new session after the GRANT was issued.

Re: Problem providing download link for BLOB data in apex report

Hi Don,
Your solution below worked but in the download option i only see save but not open for PDf file in the blob. Please let me know if you have any suggestion to achieve it
Thanks
Jo
Problem providing download link for BLOB data in apex report
591953 Nov 19, 2008 1:55 PM (in response to 660436)
Currently Being Moderated
Good morning,
Here is how I have solved this problem.
1. The select statement in the sql for the report should not include the BLOB column. I decided to select only 2 columns, the column that has the key and the column with the filename.
2. On the first column ( the primary key ) I put in the format statement that was simply DOWNLOAD:TABLENAME:BLOB_COLUMN:PRIMARY_KEY
This works. I believe that the Oracle error I was getting was because I was trying to apply this format statement to the actual BLOB column.
So, it appears that you can use any of the columns in the report to hold the DOWNLOAD format statement since in the format statement, you are defining the BLOB table, BLOB column and the primary key into that column.
Hope this helps,
Don.

Branched out from a years old thread.
user3003326 Don't post to old threads, please.

OWB 10g -- Can't Create Database Links for Data Source and Target

We installed OWB 10g server components on a Unix box running Oracle 10g (R2) database. The Designer Repository is in one instance. The Runtime Repository and the Target are in another instance. The OWB client component was installed on Windows XP. We create a data source module and a target module in OWB. The data source is on another Unix box running Oracle 9i (R2) database. We try to create database links for data source module and target module, respective. But when we created and tested the DB links, the DB links were failed.
For the database link of data source, we got the following error message:
Testing...
Failed.
SQL Exception
Repository Error:SQL Exception..
Class Name: CacheMediator.
Method Name: getDDEntryFromDB.
Repository Error Message: ORA-12170: TNS:Connect timeout occurred
For the database link of target , we got the following error message:
Testing...
Failed.
API2215: Cannot create database link. Please contact Oracle Support with the stack trace and the details on how to reproduce it.
Repository Error:SQL Exception..
Class Name: oracle.wh.ui.integrator.common.RepositoryUtils.
Method Name: createDBLink(String, String, String, String).
Method Name: -1.
Repository Error Message: java.sql.SQLException: ORA-00933: SQL command not properly ended.
However, we could connect to the two databases (data source and target) using the OWBs utility SQL Plus.
Please help us to solve this problem. Thank you.

As I said prior the database link creation should work from within the OWB client (also in 10).
Regarding your issue when deploying, have you registered your target locations in the deployment manager and did you first deployed your target location's connector which points out to your source?
I myself had some problems with database link creations in the past and I can't remember exactly what they were but it had something to do with
- the use of abnormal characters in the database link name
- long domain name used in as names.default_domain in my sqlnet.ora file
What you can do is check the actual script created when deploying the database link so see if there's something strange and check if executing the created script manually works or not.

Oracle Database link for AS400

Hi
i have two (2) database servers
1) Oracle 9i server
2) AS400 server
I want to create Oracle DataBase Link for AS400.
means i just want to connect AS400 system from oracle prompt by using
oracle database link.
please anybody help me in detail
Nasir,

There is two method.
One of that
(1) Buy Oracle Transparent Gateway for AS400/DB2 and install it to AS400.
(2) Set tnsnames.ora for connecting to AS400/DB2.
(3) Create database link
http://download-west.oracle.com/docs/html/A97615_01/toc.htm
Another of that
(1) Get odbc driver for AS400/DB2 (on your OS executing Oracle)
(2) Set listener.ora, inithsodbc.ora and tnsnames.ora.
(3) Create database link
http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96544/gencon.htm#1004729

Problem providing download link for BLOB data in apex report

Hi,
I am trying to create a report on a table with BLOB data so that the report displays a "download" link for the BLOB data. I am trying to give users the ability to download files from a website.
I have been following the instructions in OBE "Defining and Viewing BLOB Data in Oracle Application Express 3.1".
In the report, for the BLOB column, I have specified values for the following fields in Report Attributes->Column Formatting->Number/Date Format->BLOB Download Format Mask:
BLOB Table
BLOB Column
Primary Key Column 1
MIME Type Column
Filename Column
BLOB Last Updated Column
However, when I run the report, I get the following error, even thought there is data loaded into the table:
report error:
ORA-01403: no data found
When I remove the BLOB Download Format Mask information for the BLOB column, then the data displays in the report, but without the "download" link for the BLOB data (which is expected):
E.g.
Title Author Created BLOB_CONTENT
Siebel & RAC Best Practices     Erik.Peterson     17-SEP-08     [datatype]
Siebel Grid Case Studies     Mark.MacDonald     17-SEP-08     [datatype]
Siebel CRM Applications protected by Oracle Clusterware     Kelly.Tan     17-SEP-08 [datatype]
Oracle Grid: The Optimal Platform for Siebel Solutions Mark.MacDonald 17-SEP-08     [datatype]
Any ideas why I'm seeing the ORA_01403 when I specify the BLOB Download Format Mask?
Edited by: user716599 on Sep 18, 2008 12:31 AM

Good morning,
Here is how I have solved this problem.
1. The select statement in the sql for the report should not include the BLOB column. I decided to select only 2 columns, the column that has the key and the column with the filename.
2. On the first column ( the primary key ) I put in the format statement that was simply DOWNLOAD:TABLENAME:BLOB_COLUMN:PRIMARY_KEY
This works. I believe that the Oracle error I was getting was because I was trying to apply this format statement to the actual BLOB column.
So, it appears that you can use any of the columns in the report to hold the DOWNLOAD format statement since in the format statement, you are defining the BLOB table, BLOB column and the primary key into that column.
Hope this helps,
Don.

Database Link for Entire DB

Hi Friends,
I can create database link from DEV instance to PROD instance using:
===
create database link db_link1 connect to HR identified by HR using 'prod';
===
Question 1
My problem is that when HR changes it password my link gets disabled.
Is there a solution for this?
Question 2
How do I create a database link that is global from DEV to PROD.
What I mean is, I can access all tables of any schema from DEV to PROD.
Is this possible?
Thanks you very much in advance.

You shouldn't be creating a database link connecting to the 'HR' account itself. That is dangerous.
On PROD, create a shadow account -- eg called "QUERY_HR_FROM_DEV". Then GRANT SELECT on all HR tables to QUERY_HR_FROM_DEV.
In DEV, create your Database Link as "CREATE DATABASE LINK HR_PROD CONNECT TO QUERY_HR_FROM_DEV IDENTIFIED BY password using 'PROD' "
Question 2 is a worse idea.
You want any schema in DEV to be able to update any schema in PROD.

External directory database link for CME 4.0

Is it possible to link CME 4.0 with external phone directory database?
Thanks
AD

Yes, you can use an external database for your Corporate Directory on the ip phones, such as an enterprise LDAP directory. See the below link for more info:
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_callmg/4_0/sys_ad/4_0_1/ccmsys/a04ldap.htm
Please rate helpful posts!

Problem in database link for value set table

Hi All,
We are using a table from a different database in our valuset. This database we are refering via a DBLINK. But the DBLINK name is again stored in a table and will change from instance to instance i.e (development and production).
Please let us know if there is a way to make use of the above table with out hardcoding DB link.
Eg: MRP_AP_APPS_INSTANCES - This table has the DBLINK name
Vauset uses - tablename@dblinkname
if we give
select * from tablename@(select A2M_DBLINK from MRP_AP_APPS_INSTANCES),
it gives the error database link name expected.
Is there any other way how we can avoid hardcoding the dblink name.
Please help.
Regards,
Shruti

Hi,
Please see if (Note: 427588.1 - Error When Using a Database Link in the Definition of a Value-Set) is applicable.
Thanks,
Hussein

DATABASE LINK FOR SQL SERVER

Hi all,
We are running SAP 4.7C with oracle database. For other oracle (non-sap) we are using DBCO to get/put data. Now we have to do the same in SQL server also. In addition to SAP standard table we are sending data of customer table (Z & Y series). Can anybody guide me how to send / receive data using bapi/rfc or some other method.
regards
balakumar

Hi!
For using native-SQL with MSSQL database you have to make your database requests from application server resides on windows platform. So, your basis people have to set up one more windows-based application server instance. There is no impact on backend R/3 database.
Regards,
Maxim.

Download link for blob field on page

I have a form based on table with a blob column:
TEMPLATE blob
The 'Display as' on the item is set to 'File Browse...'
The Source Type is set to 'Database Column' and Source value or Expression is set to 'TEMPLATE'
I want the 'Download' link to appear next to the 'Browse' button, so I tried to change the Source value to
'TEMPLATE::::', but it gives me this when I try to save:
1 error has occurred
""."TEMPLATE" not found.
How canI get the 'Download' link to appear?

bobmagan,
Thanks for importing your app. Sorry for the late reply. Here's what I've found:
For some reason this download link seems to be tied to the TABLE NAME specified in an Automatic Row Processing process. I created an ARP to process the row instead of using the custom procedure that you wrote to process the record. I specified all the normal stuff in the ARP (i.e., TABLE_NAME, PRIMARY_KEY). After the process was created, I modified the TEMPLATE item source to TEMPLATE:::: w/o error and the download link appeared fine.
To further test, I then went back the ARP and changed the table name to lower case, edited the TEMPLATE item again, and got the following error:
*"report_layout"."TEMPLATE" not found.*
When you use DATABASE COLUMN as the source type for the item, it must be using the table_name in the ARP to identify the column being referenced.
This may a good question for the APEX developers. They could probably shed more light on this.
All in all, the workaround I found is to create the ARP and set it's condition to NEVER so that it never runs. You can still use your custom process to insert/update/delete the record. Then you can edit the item, add the TEMPLATE::::, and get the download link to appear. I left the solution up and running in your app for you to see.
Sorry for all the confusion, but I hope this helps you out.
Let me know what you think...
Keith Malay
www.sds-cg.com

Download link for Blob content

Hi all,
I am using file browse page item to upload a blob data. Here i am able to successfully add the blob data into table name. My question is how should i have a download_link under the file browse page item to download the bob data. I am using apex 4.0.
Note: In file_browse page item i had set
"Storage Type"=Blob column specified in item source attribute;
"MIME Type Column"=MIMETYPE;
"Filename Column"=FILENAME;
"Display Download Link"=NO
Thank for help!

apexlearner wrote:
Hi all,
I am using file browse page item to upload a blob data. Here i am able to successfully add the blob data into table name. My question is how should i have a download_link under the file browse page item to download the bob data. I am using apex 4.0.
Note: In file_browse page item i had set
"Storage Type"=Blob column specified in item source attribute;
"MIME Type Column"=MIMETYPE;
"Filename Column"=FILENAME;
"Display Download Link"=NOBit of a clue there I would have thought? The online help for the Display Download Link setting says:
>
Should the download link be displayed next to the "Browse" button? The download link will only be visible if the BLOB column really contains content.
>
To get the link to appear under the item instead of alongside, add the following to the page HTML Header:
<style type="text/css">
#P6_PRODUCT_IMAGE+a {
display: block;
</style>Where <tt>P6_PRODUCT_IMAGE</tt> is the name of the file browse item.

Link for BLOB column in report?

Hi all,
I wonder if it is possible to declare a blob colum (displayed image) as a link.
What I try to do is to display images in a report and give the user the option to just click on the image an get a popup window where he/she can change or delete the image. As far as I have seen this is not possible with the standard link declaration. You can fill in the link parameters but this has no effect on the generated page.
Thanks
Andy

I eventually found another post: APEX_UTIL.GET_BLOB was not found on this server
In this post there is the suggestion of putting "dbms_lob.getlength("var")" after the date field in your select. So I changed my query to have it at the end, and now my format mask (DOWNLOAD:table_name:ATTACHED_FILE:FILE_ID::FILE_MIME_TYPE:FILE_NAME:::attachment:Download) works like a charm, in a classic report.

Failed to create Database Link in OWB 9.2 for remote SQL Server

Hi,
I have to create Database link for connecting to SQL server in a different machine.I am using OWB 9.2 and XP.
Dataserver is the machine name which is running SQL Server
I included follwing lines in TNSNAMES.ORA file
hsodbc.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = dataserver)(PORT = 1433)
(CONNECT_DATA = (SID=hsodbc.world)
(HS =OK)
I included follwing lines in Listener.ORA file
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = dataserver)(PORT = 1433)
(SID_DESC=
(SID_NAME=hsodbc.world)
(ORACLE_HOME=C:\ora92)
(PROGRAM=hsodbc)
I included follwing lines in inithsodbc.ORA file
HS_FDS_CONNECT_INFO = testdsn
HS_FDS_TRACE_LEVEL = 0
While creating new database link I gave the follwing values
DB Link Name : Mylink
SQL * Net Connect String: hsodbc
User Name: sa
password:<my password>
Then clicked "Create and Test" button to get the follwing error message
Testing...
Failed.
ORA-12154 TNS:could not resolve service name
*Cause: The service name specified is not defined correctly in the TNSNAMES.ORA file
*Action: Make the following checks and correct the error:
- Verify that a TNSNAMES.ORA file exists on your repository server
in the proper place and is accessible. See the operating
system specific manual for details on the required name and location.
- Check to see that the service name exists in one of the
TNSNAMES.ORA files and add it if necessary.
- Make sure there are no syntax errors in the file.
Particularly look for unmatched parentheses or stray characters.
Any error in a TNSNAMES.ORA file makes it unusable. See
Chapter 4 in the SQL*Net V2 Administrator's Guide. If possible,
regenerate the configuration files using the Oracle Network Manager.
Is there anything wrong in my configuration. Please help me in getting out of this problem.
Thanks in advance
Andy

Hi Mark,
Thanks Mark.I did the changes in the specified .ora file but now it shows a different error message.
The error is
Testing...
Failed.
Cwm Error Message: SQL Exception
Cwm Error: SQL Exception
Class Name: CacheMediator
Method Name: getDDEntryFromDB
Repository Error Message: ORA-28545: error diagnosed by Net8 when connecting to an agent
NCRO: Failed to make RSLV connection
ORA-02063: preceding 2 lines from MYLINK
Query: select 1 from dual@MyLink
I got the same error when i tried manually in sql plus.
Please help me in getting out of thid problem
Thanks in advance
Andy

20 Index Restriction on Remote Tables (i.e. using Database Links)

The Oracle Database Administrator's Guides for 10g and 11g document a performance restriction that "No more than 20 indexes are considered for a remote table." If I go back to the 8i documentation it says "In cost-based optimization, no more than 20 indexes per remote table are considered when generating query plans. The order of the indexes varies; if the 20-index limitation is exceeded, random variation in query plans may result."
Does anyone have more details on this performance restriction? In particular I am trying to answer these questions:
1) Are the 20 indexes which are considered by the CBO still random in 10g?
2) Can I influence which indexes are considered with index hints or will my hints only be considered if they are for one of the "random" 20 indexes which are being considered by the CBO?
3) Are there any other approaches or work-arounds to this restriction assuming you need to select from a large remote table with more than 20 indexes (and need to perform the selection using 1 of those indexes to get adequate performance) or do we need to abandon database links for this table?
Thanks in advance for your input.

So, here's my simple test.
SQL>
SQL> create table gurnish.indexes20plus ( n1 number, n2 number, n3 number, n4 number, n5 number, n6 number, n7 number,
2 n8 number, n9 number, n10 number, n11 number, n12 number, n13 number, n14 number, n15 number, n16 number,
3 n17 number, n18 number, n19 number, n20 number, n21 number, n22 number, n23 number, n24 number,
4 n25 number, n26 number, n28 number);
create index xin1 on indexes20plus (n1);
Table created.
SQL> SQL> create index xin2 on indexes20plus (n2);
create index xin3 on indexes20plus (n3);
Index created.
SQL> SQL>
Index created.
SQL> SQL> create index xin4 on indexes20plus (n4);
Index created.
SQL> SQL>
Index created.
SQL> SQL> create index xin5 on indexes20plus (n5);
create index xin6 on indexes20plus (n6);
Index created.
SQL> SQL>
Index created.
SQL> SQL> create index xin7 on indexes20plus (n7);
Index created.
SQL> SQL> create index xin8 on indexes20plus (n8);
Index created.
SQL> SQL> create index xin9 on indexes20plus (n9);
Index created.
SQL>
SQL> create index xin10 on indexes20plus (n10);
Index created.
SQL> SQL> create index xin11 on indexes20plus (n11);
create index xin12 on indexes20plus (n12);
create index xin13 on indexes20plus (n13);
Index created.
SQL> SQL>
Index created.
SQL> SQL>
Index created.
SQL> SQL> create index xin14 on indexes20plus (n14);
Index created.
SQL> SQL> create index xin15 on indexes20plus (n15);
Index created.
SQL>
SQL> create index xin16 on indexes20plus (n16);
Index created.
SQL>
SQL> create index xin17 on indexes20plus (n17);
Index created.
SQL> SQL> create index xin18 on indexes20plus (n18);
Index created.
SQL> SQL> create index xin19 on indexes20plus (n19);
Index created.
SQL> SQL> create index xin20 on indexes20plus (n20);
Index created.
SQL> SQL> create index xin21 on indexes20plus (n21);
Index created.
declare
i number;
begin
for i in 1..100
loop
dbms_random.seed(i+100);
insert into indexes20plus values (dbms_random.value(1,5),dbms_random.value(1,21),dbms_random.RANDOM, dbms_random.RANDOM,dbms_random.value(1,20),
dbms_random.value(1,4),dbms_random.value(1,6), dbms_random.value(1,7),dbms_random.value(1,9),dbms_random.value(1,10),
dbms_random.value(1,11),dbms_random.value(1,12),dbms_random.value(1,13),dbms_random.value(1,14),dbms_random.value(1,1),
dbms_random.value(1,1),dbms_random.value(1,19),dbms_random.value(1,122),dbms_random.value(1,20),dbms_random.value(1,20)
,dbms_random.value(4,20),dbms_random.value(1,20),dbms_random.value(1,20),dbms_random.value(1,20),dbms_random.value(1,20)
,dbms_random.value(4,20),dbms_random.value(4,20));
end loop;
commit;
end;
SQL> set autotrace traceonly
SQL> l
1* select * from gurnish.indexes20plus@lvoprds where n1 = 4
SQL> /
no rows selected
Execution Plan
Plan hash value: 441368878
| Id | Operation | Name | Rows | Bytes | Cost (%CPU
)| Time | Inst |
| 0 | SELECT STATEMENT REMOTE | | 1 | 351 | 1 (0
)| 00:00:01 | |
| 1 | TABLE ACCESS BY INDEX ROWID| INDEXES20PLUS | 1 | 351 | 1 (0
)| 00:00:01 | LVPRD |
|* 2 | INDEX RANGE SCAN | XIN1 | 1 | | 1 (0
)| 00:00:01 | LVPRD |
Predicate Information (identified by operation id):
2 - access("A1"."N1"=4)
Note
- fully remote statement
- dynamic sampling used for this statement
Statistics
0 recursive calls
0 db block gets
0 consistent gets
0 physical reads
0 redo size
1897 bytes sent via SQL*Net to client
481 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
0 rows processed
SQL> select * from gurnish.indexes20plus@lvoprds where n21 = 4;
no rows selected
Execution Plan
Plan hash value: 2929530649
| Id | Operation | Name | Rows | Bytes | Cost (%CPU
)| Time | Inst |
| 0 | SELECT STATEMENT REMOTE | | 1 | 351 | 1 (0
)| 00:00:01 | |
| 1 | TABLE ACCESS BY INDEX ROWID| INDEXES20PLUS | 1 | 351 | 1 (0
)| 00:00:01 | LVPRD |
|* 2 | INDEX RANGE SCAN | XIN21 | 1 | | 1 (0
)| 00:00:01 | LVPRD |
Predicate Information (identified by operation id):
2 - access("A1"."N21"=4)
Note
- fully remote statement
- dynamic sampling used for this statement
Statistics
1 recursive calls
0 db block gets
0 consistent gets
0 physical reads
0 redo size
1897 bytes sent via SQL*Net to client
481 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
0 rows processed
SQL>

Database link for BLob

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