Access over dblink

Hi,
I have 2 databases DB1 and DB1. There is one user U1,U2 in DB1 and DB2 databases respectively.
U2 owns a table T1 in DB2.
U1 want to have select privliege on U2's T1 table. How should one go about it ?
Thanks

Hi,
1. Create one more user LINK1 in DB2 database.
2. From U2 of DB2 database "Grant select on T1 to LINK1"
3. From U1 of DB1 create database link using LINK1 user.
4. From U1, Data of Table T1 can be selected using
select * from T1@LINK1;
Dilipkumar Patel.

Similar Messages

ORA-02063 when selecting over DBLINK

Hey, I'm having an issue where a complex select is returning a 02063 (it has an 'invalid identifier' on a column that clearly exists)
I would post the query but it's pretty large and joins 2 views. One of the views selects through a dblink, so it's imbedded pretty far in. I cannot isolate parts of the query that are causing the issue because of this.
What I wanted to know is the best way to write the link or the view to avoid these parser issues. Here's the complete error message I get as well as the script for the link:
ORA-00904: "A"."BUYING_MEMBER_ID": invalid identifier
ORA-02063: preceding line from WEBAPP6
create public database link "WEBAPP6.REGRESS.RDBMS.DEV.US.ORACLE.COM"
connect to ABC_WEBAPP
identified by "<pwd>"
using 'abcdb';
And the script for the view which uses the link:
SELECT a.ID member_id, a.NAME member_nm, a.url member_url, a.address_1,
a.address_2, a.city, a.fda_license, a.is_abc_board_member,
a.is_gsabc_board_member, a.is_abc_foundation_board_member,
c.short_name state_id, d.code zip_cd, e.code county_cd, a.phone_main,
a.phone_alt, a.fax, b.financial_ctr_id, b.benchmarking_ctr_id,
b.piag_ctr_id
FROM MEMBER@webapp6 a LEFT OUTER JOIN lu_member_dw b ON a.ID = b.member_id
JOIN state@webapp6 c ON a.state_id = c.ID
JOIN zip@webapp6 d ON a.zip_id = d.ID
JOIN county@webapp6 e ON a.county_id = e.ID
UNION
SELECT member_id, member_nm, member_url, ' ', ' ', ' ', ' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ', ' ', ' ', financial_ctr_id, benchmarking_ctr_id,
piag_ctr_id
FROM lu_member_dw
WHERE member_id NOT IN (SELECT ID
FROM MEMBER@webapp6)

Always use alias names! If you have no alias name, create one. Without alias the database can just guess where this column is coming from.
Consider UNION ALL instead of union (not sure if it is the same result).
Consider to create a view on the other database that joins all tables and that you access over the DB-Link.
There are also some hints that influences where the selects are executed (on your DB or on the other one), however I forgot the name of them (PUSH_SUB?).

NLS over dblink

we have two oracle 8.1.7 databases - the first one with charset EE8MSWIN1250 the second with WE8DEC.
In the second db there is a dblink to the first one.
Users have their NLS_NCHAR environment variable set to EE8MSWIN1250.
When they are connected to the second database and are accessing tables from the first db through the link data conversion occurs (I guess) two times first from EE8MSWIN1250 to WE8DEC (over dblink) and then from WE8DEC back to the EE8MSWIN1250 (to user code page) and some chars are replaced by '?'.
Is there any way how to get those data unchanged ?

Hi Janus,
Unfortunately what you are seeing is the expected behavior. Assuming for now that the two databases were created with the correct database character sets.
EE8MSWIN1250 is for Eastern European languages; hence you must be storing one or more of these language data inside your database: Croatian, Hungarian, Polish, Romanian, Czech or Slovenian.
WE8DEC is for Western European languages; this is for storing French, German and Spanish etc.
Now if you start pushing data from one database character set to another, Oracle will always try and apply character set conversion to preserve your data; however these two character sets are not compatible, when Oracle encounters any characters than can not be stored in the target database character set, replacement characters such as '?' will be used. See below for the differences between the 2 character sets.
Characters in WE8DEC that are not in EE8MSWIN1250
INVERTED EXCLAMATION MARK
CENT SIGN
POUND SIGN
YEN SIGN
FEMININE ORDINAL INDICATOR
SUPERSCRIPT TWO
SUPERSCRIPT THREE
SUPERSCRIPT ONE
MASCULINE ORDINAL INDICATOR
VULGAR FRACTION ONE QUARTER
VULGAR FRACTION ONE HALF
INVERTED QUESTION MARK
LATIN CAPITAL LETTER A WITH GRAVE
LATIN CAPITAL LETTER A WITH TILDE
LATIN CAPITAL LETTER A WITH RING ABOVE
LATIN CAPITAL LETTER AE
LATIN CAPITAL LETTER E WITH GRAVE
LATIN CAPITAL LETTER E WITH CIRCUMFLEX
LATIN CAPITAL LETTER I WITH GRAVE
LATIN CAPITAL LETTER I WITH DIAERESIS
LATIN CAPITAL LETTER N WITH TILDE
LATIN CAPITAL LETTER O WITH GRAVE
LATIN CAPITAL LETTER O WITH TILDE
LATIN CAPITAL LETTER O WITH STROKE
LATIN CAPITAL LETTER U WITH GRAVE
LATIN CAPITAL LETTER U WITH CIRCUMFLEX
LATIN SMALL LETTER A WITH GRAVE
LATIN SMALL LETTER A WITH TILDE
LATIN SMALL LETTER A WITH RING ABOVE
LATIN SMALL LETTER AE
LATIN SMALL LETTER E WITH GRAVE
LATIN SMALL LETTER E WITH CIRCUMFLEX
LATIN SMALL LETTER I WITH GRAVE
LATIN SMALL LETTER I WITH DIAERESIS
LATIN SMALL LETTER N WITH TILDE
LATIN SMALL LETTER O WITH GRAVE
LATIN SMALL LETTER O WITH TILDE
LATIN SMALL LETTER O WITH STROKE
LATIN SMALL LETTER U WITH GRAVE
LATIN SMALL LETTER U WITH CIRCUMFLEX
LATIN SMALL LETTER Y WITH DIAERESIS
LATIN CAPITAL LIGATURE OE
LATIN SMALL LIGATURE OE
LATIN CAPITAL LETTER Y WITH DIAERESIS
Characters in EE8MSWIN1250 that are not in WE8DEC
NO-BREAK SPACE
BROKEN BAR
DIAERESIS
NOT SIGN
SOFT HYPHEN
REGISTERED SIGN
ACUTE ACCENT
CEDILLA
MULTIPLICATION SIGN
LATIN CAPITAL LETTER Y WITH ACUTE
DIVISION SIGN
LATIN SMALL LETTER Y WITH ACUTE
LATIN CAPITAL LETTER A WITH BREVE
LATIN SMALL LETTER A WITH BREVE
LATIN CAPITAL LETTER A WITH OGONEK
LATIN SMALL LETTER A WITH OGONEK
LATIN CAPITAL LETTER C WITH ACUTE
LATIN SMALL LETTER C WITH ACUTE
LATIN CAPITAL LETTER C WITH CARON
LATIN SMALL LETTER C WITH CARON
LATIN CAPITAL LETTER D WITH CARON
LATIN SMALL LETTER D WITH CARON
LATIN CAPITAL LETTER D WITH STROKE
LATIN SMALL LETTER D WITH STROKE
LATIN CAPITAL LETTER E WITH OGONEK
LATIN SMALL LETTER E WITH OGONEK
LATIN CAPITAL LETTER E WITH CARON
LATIN SMALL LETTER E WITH CARON
LATIN CAPITAL LETTER L WITH ACUTE
LATIN SMALL LETTER L WITH ACUTE
LATIN CAPITAL LETTER L WITH CARON
LATIN SMALL LETTER L WITH CARON
LATIN CAPITAL LETTER L WITH STROKE
LATIN SMALL LETTER L WITH STROKE
LATIN CAPITAL LETTER N WITH ACUTE
LATIN SMALL LETTER N WITH ACUTE
LATIN CAPITAL LETTER N WITH CARON
LATIN SMALL LETTER N WITH CARON
LATIN CAPITAL LETTER O WITH DOUBLE ACUTE
LATIN SMALL LETTER O WITH DOUBLE ACUTE
LATIN CAPITAL LETTER R WITH ACUTE
LATIN SMALL LETTER R WITH ACUTE
LATIN CAPITAL LETTER R WITH CARON
LATIN SMALL LETTER R WITH CARON
LATIN CAPITAL LETTER S WITH ACUTE
LATIN SMALL LETTER S WITH ACUTE
LATIN CAPITAL LETTER S WITH CEDILLA
LATIN SMALL LETTER S WITH CEDILLA
LATIN CAPITAL LETTER S WITH CARON
LATIN SMALL LETTER S WITH CARON
LATIN CAPITAL LETTER T WITH CEDILLA
LATIN SMALL LETTER T WITH CEDILLA
LATIN CAPITAL LETTER T WITH CARON
LATIN SMALL LETTER T WITH CARON
LATIN CAPITAL LETTER U WITH RING ABOVE
LATIN SMALL LETTER U WITH RING ABOVE
LATIN CAPITAL LETTER U WITH DOUBLE ACUTE
LATIN SMALL LETTER U WITH DOUBLE ACUTE
LATIN CAPITAL LETTER Z WITH ACUTE
LATIN SMALL LETTER Z WITH ACUTE
LATIN CAPITAL LETTER Z WITH DOT ABOVE
LATIN SMALL LETTER Z WITH DOT ABOVE
LATIN CAPITAL LETTER Z WITH CARON
LATIN SMALL LETTER Z WITH CARON
CARON
BREVE
DOT ABOVE
OGONEK
DOUBLE ACUTE ACCENT
HORIZONTAL BAR
LEFT SINGLE QUOTATION MARK
RIGHT SINGLE QUOTATION MARK
LEFT DOUBLE QUOTATION MARK
RIGHT DOUBLE QUOTATION MARK
EURO SIGN
TRADE MARK SIGN
However, there is also a very likely possibility that your current database character sets may not reflect the encoding of the data inside your database; in that case you need to change the database character set of your current database. Please refer to the White Paper (Character Set Migration Best Practices on the Globalization Support Home Page on OTN.http://technet.oracle.com/tech/globalization/content.html
Regards
Nat

ORA-01653 error while executing a select query over DBLINK

Hi,
We have a query that is running to extract some data from a remote DB over DBLINK.
The query is failing by throwing the error "ORA-01653 -- Unable to extend.........".
Is this a problem with the "temp" tablespace of local database or is this with the "temp" tablespace of remote DB.
As far as my knowledge goes, I guess any statement , selecting data over dblink where the query is being fired actually in remote db over dblink uses the temp tablespace of that DB only and hence the problem should be with the temp tablespace of remote db only but I am not very sure about this.
Is there any chance that it can be problem with "temp" tablespace of local DB from where the query is being fired over dblink.
It would be really helpful if anyone can throw some light on this.
Thanks

The error stack will normally tell you if the exception is raised in the remote database.
You might try using the driving_site hint (see performance guide) to push work to the remote site or pull it local. It all depends on your particular query and explain plan.
Remember to use { code } (without the embedded spaces) tags to frame your code and explain plan so it remains formatted, if you post it here.

Ftp and http access over XDB repository is not allowed...

When I try to execute the following command on a reasonably fresh Oracle 11 installation:
insert into "XMLTEST" ( "name", "xmlfof" ) values ( 'small', DBMS_XDB.GETCONTENTXMLTYPE('/public/small.xml') );
-- The schema is correctly registered, the file "small.xml" is in the /public repository folder, the user has every conceivable role and priviledge
-- http access works fine from a remote location, tried to execute the command on the server and from remote system...
I get the following error message:
ORA-31020: Der Vorgang ist nicht zulässig, Ursache: For security reasons, ftp and http access over XDB repository is not allowed on server side ORA-06512: in "XDB.DBMS_XDB", Zeile 1915
Searching for an answer on the forum didn't produce any concreate explanation... Does anyone have any idea how to solve this problem?

As it turns out, the XML file contained a reference to a DTD at an external web-site, which caused the problem - it was identical to that described here:
Re: ORA-31020 when using XML with external DTD or entities
After removing the reference, everything works perfectly...

App not working properly when access over vpn

hi,
Strange behavior of application when access through vpn. The application keeps on reloading endlessly. And other application renders completely but when the tab is clicked it will reload the whole page displaying the same tab. Is ADF has an issue when access over proxy?
Both application is build using ADF 11g and is implemented through regions.
Thanks in advance.

I think there something to do with PPR or calling the region or am I missing something? The page that keeps reloading has taskflow with activation is immediate but the refresh is set to IfNeeded. Then the page with tabs, the content of the tab are taskflows as well.
Thanks in advance.

Purge MV logs over dblink

Is it possible to purge MVlogs over dblink? what syntax needs to be followed?
begin
dbms_snapshot.purge_log('testing_mview@ORCL10R2',1,'DELETE' );
END;
ORA-20000: ORA-00979: illegal reference to remote database
ORA-06512: at "SYS.DBMS_IREFRESH", line 77
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2693
ORA-06512: at line 2

Hi,
I'd rather try something like this:
BEGIN
dbms_snapshot.purge_log@ORCL10R2('testing_mview',1,'DELETE' );
END;

Slow internet access over 3G

Since 5/31/12, my internet access over 3G has been super duper slow.
I can see that a request is going out from the phone, but the phone just sits there saying 'requesting' this is happening with any site I visit. Anyone else seeing this behavior? I live in the San Francisco Bay Area. I've been seeing this problem in the South Bay and North Bay.

I have experienced very to to connect for about a week. Contacted support by email yesterday and got this response this morning. Surprisingly, it was better today.
"There are different factors that affect the speed of your service which
include both the phone itself and the network signal you are receiving. We
certainly are not intentional causing any slowness of service to get customers
to change from the Unlimited Data plan. The plan does not have any bearing on
the speed of service. To be able to properly determine and resolve your issue we
need to complete troubleshooting with you. Please contact our Technical Support
at 800-922-0204 for further assistance. "

I do not own neither a Mac nor an iOS devices. May I still be able to use all features of Time Capsule, including remote access over the internet?

As described above.
I do not own neither a Mac nor an iOS devices. May I still be able to use all features of Time Capsule, including remote access over the internet?

You will have setup issues.. as the latest AC model requires a Mac or iOS device.. eventually apple will release a windows version of the utility.. and the current one does partly work but Apple seem in no hurry.
You can find a Mac or iPad equipped friend to do the setup.. once setup the Windows computer can use it.
BUTT you cannot access it from remote..
Not with windows. You need BTMM and iCloud account. AFAIK even with those you cannot reach the TC.
You can do it manually.. using a vpn. Buy a proper vpn router and use a vpn client on the windows computer.. the TC would be in bridge to the network..
Apple really did not make this for windows.. and SMB access is only provided on LAN access not WAN.

Pass a type over dblink

Hi,
If I have defined a type as:
create or replace type MyType is table of number(10);
, can I so something like this (this block is executed from machine A):
declare
varType MyType;
begin
varType := MyType();
for i in 1..10 loop
varType.extend;
varType(varType.last) := i;
end loop;
-- then call a remote procedure, for which the 3rd parameter is of MyType type
<schema>.<procedure_name>@<dblink_name<(param1, param2, varType);
So can I call from machine A, a remote procedure (from machine B), and pass to it that varType parameter of that type? Is this supported over dblink?
That MyType type is created on both machines.
Thank you.

Perhaps this will convince you then:
Restriction on Using User-Defined Types with a Remote Database
Objects or user-defined types (specifically, types declared with a SQL CREATE TYPE statement, as opposed to types declared within a PL/SQL package) are currently useful only within a single database. Oracle Database restricts use of a database link as follows:
You cannot connect to a remote database to select, insert, or update a user-defined type or an object REF on a remote table. You can use the CREATETYPE statement with the optional keyword OID to create a user-specified object identifier (OID) that allows an object type to be used in multiple databases. See the discussion on assigning an OID to an object type in the Oracle Database Data Cartridge Developer's Guide. You cannot use database links within PL/SQL code to declare a local variable of a remote user-defined type.
You cannot convey a user-defined type argument or return value in a PL/SQL remote procedure call.
http://docs.oracle.com/cd/E11882_01/appdev.112/e11822/adobjbas.htm#ADOBJ7083

Poor CLOB performance over dblink

These statements take 4 seconds to complete:
drop table t_test purge;
create table t_test as
SELECT CONTENT_ID,SITEID
from sitecontent@remotedb;These statements don't complete after at least 10 minutes of waiting:
drop table t_test purge;
create table t_test as
SELECT CONTENT_ID,SITEID, BODY
from sitecontent@remotedb;The only difference is that the second SQL contains a reference to BODY, which is a CLOB column.
The SITECONTENT table consists of just 2815 records. The CONTENT_ID and SITEID columns are NUMBER. A max(length(body)) returns a result of 29,005. And a count where length(body)>15000 returns just 115. So we are not talking about huge amounts of data for the table, nor large amounts for very many rows. Certainly not enough, I would have thought, to explain a difference in completion times between about 4 seconds and apparently forever.
Is this a known issue with CLOBs over database links? (I have looked, but not found anything relevant). Is there anything I can do to remedy the situation (not asking for quick fixes, just any steps I can plod my way through!). When I look at the local database, it's just constantly waiting on SQL*Net message from dblink.
This is 11.2.0.1 on RHEL5.5 x86_64.
Thanks in advance.

Well, I tried that:
Connected.
SQL> set autotrace traceonly explain statistics;
SQL> create table t_test as select ctext from clobtest@remotedb;
Table created.
SQL>No statistics were displayed, in other words. (Same result when selecting vtext, as it happens). I don't think autotrace works on DDL statements, does it? It's working fine for selects, though. So, ignoring the create table bit for now, here's the Vtext statistics:
SQL> select vtext from clobtest@remotedb;
2831 rows selected.
Execution Plan
Plan hash value: 1402521094
| Id | Operation              | Name     | Rows | Bytes | Cost (%CPU)| Time     | Inst   |
|   0 | SELECT STATEMENT REMOTE|          | 2994 | 5853K|   312   (1)| 00:00:04 |        |
|   1 | TABLE ACCESS FULL     | CLOBTEST | 2994 | 5853K|   312   (1)| 00:00:04 |   RMDB |
Note
   - fully remote statement
   - dynamic sampling used for this statement (level=2)
Statistics
          0 recursive calls
          0 db block gets
          0 consistent gets
          0 physical reads
          0 redo size
    3629480 bytes sent via SQL*Net to client
       2428 bytes received via SQL*Net from client
        190 SQL*Net roundtrips to/from client
          0 sorts (memory)
          0 sorts (disk)
       2831 rows processedI can't produce the equivalent Ctext statistics, of course, since a select from a remote clob simply generates an ORA_22992.
I'm sort-of stumped at this point.

Custom Access over msmdpump

Hi,
Lets say we have two SSAS Databases. In each we have Dynamic Dimension Security implemented. The Database are only accessable to Users by the msmdpump.dll. We have some Standard Reports in Xlcubed which can be accessd by Sharepoint.So far so good.
Now our customer wants a custom security for the cubes in that way, that some Users whcih have access to cube and can use the Standard Reports are NOT allowed to use the Client Excel or other Analysis Tool for Adhoc Analysing. So they are only allowed to
use the Standrd Reports.
My first idea was to use a Proxy (as described here:
SSASProxy) doesnt meet our needs.
My second idea was to implement a Custom Module for IIS, but "unfortunatly" the messages between client and server are encrypted. for details:
XMLA over TCP/IP.
Could you imagine a possible way of implementing that?
Thanx in Advance for your Creativity

Hi. Thanx.
My actual solution looks like this: 1 Role on the cube for all users which are allowed to analyze. So these users can access the cube by the normal way over the datapump.
A second role which includes only 1 Sys User. Then I use the Proxy by which everybody can connect. In this proxy I check out the user and from where it comes(Web, Excel,..) and where ihe wants to connect and open a new Webrequest to the Datapump by the Sys
User. In the CustomData Property I add the Username. So all our Standardreport will use the Proxy.
Cons:
ensure to determine from where the user is coming
performance? when all user connecting to the cube with one sys-user
if a new Standardreport is published, we must ensure that this report is using the proxy (while in design, some connectionmapping,..)

ORA-00904 over DBLINK

Hi,
I have a cursor which queries some tables over a DBLINK. The remote
database is Oracle 8.1.7.4 and package is being compiled on 10.2.0.3
Since this morning I am getting the below error message while trying
to compile the package:
112/10 PL/SQL: ORA-00904: "MIL"."ORGANIZATION_ID": invalid
identifier
However, when I run the cursor query in a different SQL session, it
fetches data. The cursor definition is
CURSOR curLocators(pOrganizationId NUMBER) IS
SELECT ood.organization_code organization_code
,NULL row_organization_id
,mil.segment1||'.'||mil.segment2||'.'||mil.segment3||'.'||
mil.segment4 Concatenated_Segments
,NULL row_item_id
,mil.description
,mil.inventory_location_type --no longer used
,mil.picking_order
,mil.location_maximum_units
,mil.subinventory_code
FROM mtl_item_locations@convsourcedb mil
,mtl_material_statuses_vl@convsourcedb mms
,org_organization_definitions@convsourcedb ood
,(SELECT sum(total_qoh) total_qoh,
subinventory_code,
organization_id,
locator_id
FROM mtl_onhand_locator_v@convsourcedb
GROUP BY locator_id, subinventory_code,
organization_id
) mol
WHERE 1=1
AND NVL(mil.status_id,1) = mms.status_id(+)
AND ood.organization_id = mil.organization_id
AND mms.status_code = 'Active'
AND mil.enabled_flag = 'Y'
AND mol.organization_id = mil.organization_id
AND mol.locator_id = mil.inventory_location_id
AND mil.organization_id = pOrganizationId
The column definetely exists in the base table
SQL> select organization_id from mtl_item_locations@convsourcedb where
rownum=1;
ORGANIZATION_ID
216
I tried to comment out the where clause which is throwing the error,
but the package compilation fails with another Where clause error.
All this was working absolutely fine till last evening and I have not
changed the cursor query since then.
How can I rectify this?
Any inputs would be greatly appreciated.
Thanks,
Ashish

Hi Ashish,
Maybe the link user and the owner of the remote table are not the same?
What do you have here :
select tab.owner remote_owner, lnk.username link_user
from all_db_links lnk, all_tables@convsourcedb tab
where tab.table_name = 'MTL_ITEM_LOCATIONS'
and lnk.db_link = 'CONVSOURCEDB';Regards
Peter

Grant access to DBlink

We are facing a small issue . the problem is as follows.
=========================================================
1. I have two databases
     Namely
          Database1
          Database2
2.Database2 has a table say EMP
3.I want to select , insert update EMP from Database1
4.Hence I have created a db link in Database1 named Dblink1
5. I don't want to user the @ symbol (alias -- EMP@Dblink1) in my query. I just want to access directly.
6. When I tried to give grant access from Database1 , It gives me an error.
Please suggest how to acheive this

5. I don't want to user the @ symbol (alias -- EMP@Dblink1) in my query. I just want to access directly.This is simply not possible to access the table which is in another database without using dblink. i..e you have to have the dblink to access the other database tables.
>> 6. When I tried to give grant access from Database1 , It gives me an error.
What's error you got??
Regards,
Sabdar Syed.

Guest Wireless access over WAN

Hello Everyone,
We have around 45 remote location , all are connected with GRE Tunnels.
44 location have there own WLC which are managed by NCS and ISE in HQ , All 44 location have Wireless access for Guest and INternal Staff.
Now my Question is :
One location(45th) have only 10 users and I dont want to put a WLC there.
How can I provide the Guest wireless access on this location over WAN from HQ.
We can buy APs.
Please give me some ideas to solve this problem.
Here I am attaching my default plan :
Thanks

You just configure the access point in FlexConnect mode and then on the guest SSID you would central switch the WLAN. Central switching tunnels back traffic to the WLC and local switching drops traffic off at the local site. Here are some guides to look at.
https://supportforums.cisco.com/docs/DOC-24082
http://www.cisco.com/en/US/products/ps11635/products_tech_note09186a0080b7f141.shtml
Sent from Cisco Technical Support iPhone App

Access over dblink

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