Can clob columns be selected across a database link (synonym)?

Hello,
I would like to do something like this...
insert into archive_table (id, msg, start_date)
select id, msg, startdate from synonym_table
where start_date < whatever;
...where msg represents a clob column and synonym_table represents a synonym in the current table space which accesses another Oracle table using a database link.
Is this possible?

http://asktom.oracle.com/pls/ask/f?p=4950:8:15261108079829288196::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:950029833940

Similar Messages

Synonym across a database link

Hi Oracle Gurus,
Heres my requirement, -
a] I have two databases ('x' & 'y').
b] On x, I have two schemas ('a' & 'b'), while on 'y', I have
only 1 schema ('c').
c] I have created a synonym in 'b' for all the objects in 'c'
using a database link.
d] Now, on 'b', I am able to access the packages and tables
(only select, - cant describe the tables, since this is not
allowed). that belong to 'c' using the synonyms created.
e] I am now having to create another set of synonyms in 'a'
for the synonyms in 'b'. Essentially, the purpose is to
access the objects in 'c', but not directly.
Oracle is complaining here saying that it does not have
access to creating these synonyms.
It appears, the first level of synonym across a database
link is acceptable, but not the second level
Is there any solution for this? I do have a constraint
because of which I am not being able to create a synonym
from a directly to c.
Graphically..
DB x DB y
Schema a
|
Synonym for synonyms in b (to access objects in c)
Oracle doesnt allow me to create this.
|
v
Schema b <--Synonyms using DBLINK--> Schema c
No problems
I would appreciate any help on this issue.
Thanks
Ravi Kumar

When you say "Oracle complains" I assume you're getting an error message. If you'd told us what it is that when help with the diagnosis. However, I going to guess that it's ORA 4043. This is because you can only create synonyms for objects like tables or views, you cannot create a synonymn on a synonym.
(pedantically you can create those synonyms - that's because Oracle allows you to create synonyms for tables that don't exist - you just can't use them).
rgds, APC

How to release FSG reports without using Program - FSG Transfer across a database link

Hi,
Our project development team have built some reports to meet the requirements of the business customer using Financials Statement Generator (FSG) as part of an implementation of Oracle E-Business Suite (EBS) release 12.1.3.
We know we can use the Program - FSG Transfer across a database link to move the reports from development to another environment.
Oracle General Ledger User's Guide
Copying Report Objects From Another database (FSG Transfer Program)
http://docs.oracle.com/cd/E18727_01/doc.121/e13627/T312864T313620.htm#I_tx2Dfsgx2Dimpex78
However our production environment is on a different network. Therefore this solution will not work since a database link cannot be created from production to the non production databases. Obviously I am asking the network solution architects to consider how to join the networks but do'nt hold out much hope. Has anyone got an alternative solution?
FYI We have considered extracting the report definition, row sets, column sets etc from the back end database tables then transforming that into end user key strokes to simulate what someone would do to create such a report from scratch using the front end forms using a tool such as data loader which I believe has no licence cost implications. We dont have a lot of time so would be interested to know if anyone had any success with an alternative method such as this.
P.S. I had found this question asked already by someone else but without an answer so i am trying again today.
Transfer FSG Report without using FSG Transfer program.

Look here for a potential way: Re: Calling table function on remote server - possible?

Creation of view with clob column in select and group by clause.

Hi,
We are trying to migrate a view from sql server2005 to oracle 10g. It has clob column which is used in group by clause. How can the same be achived in oracle 10g.
Below is the sql statament used in creating view aling with its datatypes.
CREATE OR REPLACE FORCE VIEW "TEST" ("CONTENT_ID", "TITLE", "KEYWORDS", "CONTENT", "ISPOPUP", "CREATED", "SEARCHSTARTDATE", "SEARCHENDDATE", "HITS", "TYPE", "CREATEDBY", "UPDATED", "ISDISPLAYED", "UPDATEDBY", "AVERAGERATING", "VOTES") AS
SELECT content_ec.content_id,
          content_ec.title,
          content_ec.keywords,
          content_ec.content content ,
          content_ec.ispopup,
          content_ec.created,
          content_ec.searchstartdate,
          content_ec.searchenddate,
        COUNT(contenttracker_ec.contenttracker_id) hits,
          contenttypes_ec.type,
          users_ec_1.username createdby,
          Backup_Latest.created updated,
          Backup_Latest.isdisplayed,
          users_ec_1.username updatedby,
          guideratings.averagerating,
          guideratings.votes
     FROM users_ec users_ec_1
            JOIN Backup_Latest
             ON users_ec_1.USER_ID = Backup_Latest.USER_ID
            RIGHT JOIN content_ec
            JOIN contenttypes_ec
             ON content_ec.contenttype_id = contenttypes_ec.contenttype_id
             ON Backup_Latest.content_id = content_ec.content_id
            LEFT JOIN guideratings
             ON content_ec.content_id = guideratings.content_id
            LEFT JOIN contenttracker_ec
             ON content_ec.content_id = contenttracker_ec.content_id
            LEFT JOIN users_ec users_ec_2
             ON content_ec.user_id = users_ec_2.USER_ID
     GROUP BY content_ec.content_id,
     content_ec.title,
     content_ec.keywords,
     to_char(content_ec.content) ,
     content_ec.ispopup,
     content_ec.created,
     content_ec.searchstartdate,
     content_ec.searchenddate,
     contenttypes_ec.type,
     users_ec_1.username,
     Backup_Latest.created,
     Backup_Latest.isdisplayed,
     users_ec_1.username,
     guideratings.averagerating,
     guideratings.votes;
Column Name      Data TYpe
CONTENT_ID     NUMBER(10,0)
TITLE          VARCHAR2(50)
KEYWORDS     VARCHAR2(100)
CONTENT          CLOB
ISPOPUP          NUMBER(1,0)
CREATED          TIMESTAMP(6)
SEARCHSTARTDATE     TIMESTAMP(6)
SEARCHENDDATE     TIMESTAMP(6)
HITS          NUMBER
TYPE          VARCHAR2(50)
CREATEDBY     VARCHAR2(20)
UPDATED          TIMESTAMP(6)
ISDISPLAYED     NUMBER(1,0)
UPDATEDBY     VARCHAR2(20)
AVERAGERATING     NUMBER
VOTES          NUMBERAny help realyy appreciated.
Thanks in advance
Edited by: user512743 on Dec 10, 2008 10:46 PM

Hello,
Specifically, this should be asked in the
ASP.Net MVC forum on forums.asp.net.
Karl
When you see answers and helpful posts, please click Vote As Helpful, Propose As Answer, and/or Mark As Answer.
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Can statements inside a package refer to database links

Hi all
I was just curious to know, what will happen in this case
CREATE OR REPLACE PACKAGE BODY "TESTUSER"."TESTPKG" as
procedure testproc is
n number := 0;
begin
select count(*) into n from ps_tab@dblink;
end;
end testpkg;';
Is it valid to have dblink inside a package body?
Regards
Edited by: user13332773 on Mar 6, 2011 10:26 PM

user13332773 wrote:
Hi all
I was just curious to know, what will happen in this case
CREATE OR REPLACE PACKAGE BODY "TESTUSER"."TESTPKG" as
procedure testproc is
n number := 0;
begin
select count(*) into n from ps_tab@dblnk;
end;
end testpkg;';
Is it valid to have dblink inside a package body?
RegardsSure it is. You can have a database link inside a package code. Moreover, you'll get the name of that database link in the REFERENCED_LINK_NAME column of the DBA_DEPENDENCIES view
Kamran Agayev A.
Oracle ACE
My Oracle Video Tutorials - http://kamranagayev.wordpress.com/oracle-video-tutorials/

Can we create pl/sql code over database link?

Hi All,
We are using Oracle 9i database.
I want to know if we can create or modify pl/sql code (procedue, package, etc) over the database link? That means - can we create a procedure in remote database using the db link?
Thanks,
Dnyanesh

yes, I can connect to the remote database directly and create/modify the packages.
But I want the users not to create them using the db link.
Is there any way to create the pl/sql package over database link?
Thanks,
Dnyanesh

Can i limit the selection in Logical database ?

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how can i limit the number of records in Logical
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i get dump on memory , when i press F4 , becouse i have to many records ,
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in se36 ?
in my program ( se38 ) ?
dump description
&INCLUDE INCL_INSTALLATION_ERROR
The current program had to be terminated because of an
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Hi ,
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INTO TABLE it_tab.
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Updating across a database link

Our App Ex is on a 10g database, but I'm updating a table on a 9i database. If I try to use bind variables, ie values directly from the AppEx form or :APP_USER, I get the following error:
ORA-01461 -
can bind a LONG value only for insert into a LONG column
I don't have any long values: the table fields are varchar2, and the form fields are text.
We've got round the problem by feeding the form fields into declared variables, and updating the table from those variables
Is this a known bug? Is it because it's a db link, or because the dbs are different versions?
Any ideas, anyone?

It's not doing anything sophisticated.
Table is doc_products_lookup,
The fields I'm updating are
PRODUCT_DESCRIPTION NOT NULL VARCHAR2(40)
LAST_UPDATED_DATE NOT NULL DATE
LAST_UPDATED_BY NOT NULL VARCHAR2(20)
SQL was
'update doc_products_lookup@[viewname]
set PRODUCT_DESCRIPTION = :P30_DESCRIPTION,
LAST_UPDATED_DATE = sysdate,
LAST_UPDATED_BY = :APP_USER
where product_code = :P30_CODE;'
the :P30 fields are described as text on the screen.

Select query over database link hanging

Hi All,
I have been looking all over the internet and all over this forum but i could not find the solution for my issue given below.
There are a number of distributed databases (Oracle 10g) over a private network. Sending and receiving data amongst all the databases work fine. But when one particular database A tries to receive data from database B, it hangs and then the famous old error TNS LOST CONTACT.
Basically, this has been implemented by creating a batchjob. This worked fine for years and now suddenly this is not working only for the two specific databases.
It is just a simple select query being hit on the remote database. This is called through a function in the package, which builds the dynamic select query using DBMS_SQL package.
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The same function when called in a pl/sql block from database A, works perfectly fine and receives the required data from database B. This was tried with Oracle SQLDeveloper, TOAD and SQLPLUS.
Things seems to be working fine, but actually unaware of the problem. I tried all the suggestions provided over the metalink also.
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Thanks
Akhil.

Hi Rajat,
The user uses DEFAULT profile. The details of the parameter are:
PROFILE RESOURCE_NAME RESOURCE_TYPE LIMIT
DEFAULT COMPOSITE_LIMIT KERNEL UNLIMITED
DEFAULT SESSIONS_PER_USER KERNEL UNLIMITED
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DEFAULT LOGICAL_READS_PER_SESSION KERNEL UNLIMITED
DEFAULT LOGICAL_READS_PER_CALL KERNEL UNLIMITED
DEFAULT IDLE_TIME KERNEL UNLIMITED
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DEFAULT FAILED_LOGIN_ATTEMPTS PASSWORD 10
DEFAULT PASSWORD_LIFE_TIME PASSWORD UNLIMITED
DEFAULT PASSWORD_REUSE_TIME PASSWORD UNLIMITED
DEFAULT PASSWORD_REUSE_MAX PASSWORD UNLIMITED
DEFAULT PASSWORD_VERIFY_FUNCTION PASSWORD NULL
DEFAULT PASSWORD_LOCK_TIME PASSWORD UNLIMITED
DEFAULT PASSWORD_GRACE_TIME PASSWORD UNLIMITED
Thanks
Akhil

Since upgrading to firefox ver. 3.6.8 can't upload files to Google Docs, whose help forum indicates many firefox users are having this problem since upgrading to 3.6.8: You can click on the "Select files to upload" link but nothing happens.

Right-clicking on the link doesn't offer options to open anywhere (new tab, etc.)

There is a problem with uploading files to Google docs in Firefox 3.6x versions.
http://www.google.com/support/forum/p/Google+Docs/thread?tid=4f0369bdcf6fd7ff&hl=en "Select files to upload" not working in Firefox - Google Docs Help (Thanks to Joolsa for the link)

Slow delete on a table with one CLOB column

Hi,
I have a table which has one CLOB column and even if I delete one row from it, it takes approx. 16 seconds. Since UNDO isn't generated for CLOBs (at least not in the UNDO tablespace), I can't figure out why this is so? The CLOB has defined a RETENTION clause, so it depends upon UNDO_RETENTION which is set to 900. There wasn't any lock from another session present on this table.
The table currently contains only 6 rows but it used to be bigger in the past, so I thought that maybe a full table scan is going on when deleting. But even if I limit the DELETE statement with an ROWID (to avoid a FTS), it doesn't help:
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
PL/SQL Release 11.1.0.6.0 - Production
CORE    11.1.0.6.0      Production
TNS for 32-bit Windows: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production
SQL> select count(*) from scott.packet;
COUNT(*)
         6
SQL> column segment_name format a30
SQL> select segment_name
2    from dba_lobs
3 where owner = 'SCOTT'
4     and table_name = 'PACKET';
SEGMENT_NAME
SYS_LOB0000081487C00002$$
SQL> select segment_name, bytes/1024/1024 MB
2    from dba_segments
3 where owner = 'SCOTT'
4      and segment_name in ('PACKET', 'SYS_LOB0000081487C00002$$');
SEGMENT_NAME                           MB
PACKET                               ,4375
SYS_LOB0000081487C00002$$             576
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SQL> select sum(dbms_lob.getlength (packet_xml))/1024/1024 MB from scott.packet;
        MB
19,8279037
SQL> column rowid new_value rid
SQL> select rowid from scott.packet where rownum=1;
ROWID
AAAT5PAAEAAEEDHAAN
SQL> set timing on
SQL> delete from scott.packet where rowid = '&rid';
old   1: delete from scott.packet where rowid = '&rid'
new   1: delete from scott.packet where rowid = 'AAAT5PAAEAAEEDHAAN'
1 row deleted.
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Someone asked Jonathan Lewis a similar looking question (under comment #5) here: http://jonathanlewis.wordpress.com/2007/05/11/lob-sizing/ but unfortunately I couldn't find if he wrote any answer/note about that.
So if anyone has any suggestion, I'll appreciate it very much.
Regards,
Jure

After reviewing the tkprof as suggested by user503699, I noticed that the DELETE itself is instantaneous. The problem is another statement:
select /*+ all_rows */ count(1)
from
"SCOTT"."MESSAGES" where "PACKET_ID" = :1
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          2           0
Execute      1      0.00       0.00          0          0          0           0
Fetch        1      1.40      16.93     125012     125128          0           1
total        3      1.40      16.93     125012     125128          2           1
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: ALL_ROWS
Parsing user id: SYS   (recursive depth: 1)
Rows     Row Source Operation
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Thanks for pointing me to the 10046 trace which solved the problem.
Regards,
Jure

Loading UTF-8 String into CLOB column

Hello!
I am trying to load UTF-8 encoded strings into a CLOB column in an Oracle 9i database from VB.Net using ODP.Net (9.2.0.414).
The strings are XML snippets (Microsoft WordML to be precise). Each corresponds to a record which already exists in the database, therefore I do an update to add the UTF-8 string.
Some of the XML snippets contain characters which once inserted look like upside down question marks (characters represented by 0x92 and 0x96 for example end up as 0xBF once in the database).
Setting breakpoints in Visual Studio, I can watch the string values in the 'Locals' window and they appear correct (in fact I can copy from the 'Locals' window and using a tool such as TOAD can paste the strings into the database successfully). Pasting through TOAD, the characters are properly represented in the database (ie 0x92 is 0x92).
I've tried a number of approaches with no luck.
Any advice/suggestion are most welcome. Thanks!
Here is my code:
strConnectionString = ConfigurationSettings.AppSettings.Item("ConnectionString")
strComponentsTable = ConfigurationSettings.AppSettings.Item("ComponentsTable")
objConnection = New OracleConnection(strConnectionString)
objCommand = objConnection.CreateCommand()
objCommand.CommandType = CommandType.Text
objCommand.CommandText = "UPDATE " & strComponentsTable & " SET TEMPLATE_COMPONENT_CONTENT = :p_content WHERE TEMPLATE_COMPONENT_ID = :p_id"
objConnection.Open()
For Each strId In objComponents.Keys
strContent = objComponents.Item(strId)
objCommand.Parameters.Clear()
objParameter = objCommand.CreateParameter()
objParameter.ParameterName = "p_content"
objParameter.OracleDbType = OracleDbType.Clob
objParameter.Direction = ParameterDirection.Input
objParameter.Value = strContent
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objParameter.OracleDbType = OracleDbType.Int32
objParameter.Direction = ParameterDirection.Input
objParameter.Value = CInt(strId)
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Some further research has revealed the following:
Two of the characters I provided as examples of not being stored properly in the database are (in Unicode) U+2013 and U=2019. These characters, encoded as UTF-8 should each be three bytes (0xE2 80 93 and 0xE2 80 99 respectively). Sent via VB.Net and ODP.Net they both end up in the database as one byte each (0xBF). Copy and Pasted via TOAD they end up as one byte each (0x92 and 0x96 respectively).
The NLS settings on the server side are:
NLS_CHARACTERSET = WE8ISO8859P1
NLS_NCHAR_CHARACTERSET = AL16UTF16
I have tried using both CLOB and NCLOB column with the results being identical.
Not sure what else to try...

Query the column names from Public database links

Greetings,
I would like to retrieve the list of all the column names from a public database link. A regular ALL_TAB_COLUMNS doesn't seem to be working.
Thanks
John9569

Hi,
I think your DBA needed to create a synonym for you to have access of that remote database view.
CREATE SYNONYM synonym_name
FOR view_name@db_link;Then you can find the column names by
DESC synonym_nameGuru's , please correct me If I am wrong.
Thanks
Edited by: user10679113 on Mar 12, 2009 12:28 PM
Edited by: user10679113 on Mar 12, 2009 12:33 PM

Column reference over database link.

Hi,
Is it possible to reference a table column across a database link?
Ex: var1 table.column%TYPE@dblink
Thanks
Chad

Chad,
Glad it worked ..
Taking this thread a step further ..
If you have the privileges to create synonyms then you could do the following:
create synonym mySynonym
for table@dblink
Then use the synonym in the PL/SQL code as follows:
var1 mySynonym.column%TYPE;
This will avoid repetitive typing of table.column@dblink and if the dblink name changes then you have to make the change in only one place - the synonym
Shakti
http://www.impact-sol.com
Developers of Guggi Oracle - Tool for DBAs and Developers

OWA_UTIL and HTP across database link

Has anyone figured out how to use the features of OWA_UTIL, such as listprint, across a database link? I can create a drop list on data that is in the portal instance. But if I try to create a list based on a table in a back-end database through a database link, it generates errors.
Also, I create a procedure to generate a dynamic page portlet using htp calls and it works fine if the procedure is located in the portal instance. But move the code to the back-end database and access via a synonym and database link and it generates errors out of the owa_util package.

Create a view on your local db using tables over the db link and base your list on that view.

Can clob columns be selected across a database link (synonym)?

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