How can I determine what views have a dblink hard coded in them? I am talking about a large number of views so bringing up each view's DDL in a GUI data dictionary tool to look is not an option. I tried running the query below unfortunately "text" is a LONG and doesn't allow the use of the "like" statement.
select * from dba_views where text like '%@%' ;
We wrote one data load process to load GZ files into Database.during process we will change client facing view definitions to backup table so that we can work on base tables.
This view definition changes are related to FROM and WHERE clause (not columns/type). during load process, client/user may connect to current server and accessing these views. My question is what will be the reflection of changing view definition while user is accessing view?
I created a scenario-
STEP1: Created a view-
create or replace view view_01 as
select object_name from dba_objects union all
select object_name from dba_objects union all
select object_name from dba_objects union all
[code]....
View definition is replaced by new definition while select is executing on that view. select returned number of records as per view definition one.
I have a view in schema 'sales', let say the view name is view_test.
This view sales.view_test uses two base tables, one from schema 'products' and other from its own schema 'sales'.
So in sales schema the view defination is,
create or replace view view_test
as
select * from t_test, products.t_products
where t_test.id=t_products.id
The view got created, I have granted select permisson with grant option on tables t_test, products.t_products and view_test to another user 'master'.But when i query the view from master schema I get an error saying that the view does not exists, upon analysis, I found one of the base table in the view defination has no schema name mentioned (select * from t_test, products.t_products --here only t_test mentioned rather sales.t_test), I feel because the table t_test belongs to the same schmea of the view, they did not mention the schema name. If not, does it mean that we need to always specify the schema names in the view defination for the base tables.
How to retrieve a view definition to re-create it somewhere when its size is more than 32767 bytes?Here are some constraints :
- We are in Oracle 9.2.0.8, meaning that we cannot use the DBMS_METADATA package.
- We cannot concatenate char and long : things like
set long 100000
select 'create or replace view my_view as ' || text from dba_views where view_name = 'MY_VIEW';
are not possible.
I created a view for emp1 table.
SQL> select view_name , text from dba_views where VIEW_NAME='EMP1_VIEW';
VIEW_NAME TEXT
EMP1_VEW select empid , ename , qual, dept from emp1
where empid between 1000 and 1010
Now i tried to use create or replace option
SQL>create or replace view emp1_view as
*2 select * from emp1_view with read only;*
create or replace view emp1_view as
*+
ERROR at line 1:
ORA-01731: circular view definition encountered
Actually i want to make read only view (emp1_view) ; without doping ;
[URL]...
I have a quite complex view that selects from approx 10 long tables (approx 4M records each) and build one "customer sentence" pre customer id. I will be always getting just one row from this view, eg. select * from my_view where party_id = XYZ. I'll NEVER EVER select the whole view.
The problem is that running a query:
select * from my_view where party_id = XYZ takes really long time, while putting the party_id = XYZ condition directly into the view executes in 0.0 seconds.
After putting a ORDERED FIRST_ROWS(1) hint into a view the execution plans seems to be the same (or very similar) for both queries. Unfortunately, I can not transfer anything but screenshot from the environmnet - therefore I paste the exec plans as screenshots only - pls follow the link: [URL]...
View DDL:
create or replace view my_view as
select /*+ ORDERED FIRST_ROWS(1) */ pt.party_id
pt.party_id as id_klienta_mdm,
pt.master_reference_no as id_klienta_ref_mdm,
[code]...
I've tried using Select * from ALL_TABLES but this does not return me the column info for each table.
How do I get an output of all tables in a database along with column (e.g datatypes etc)?
I'm using TOAD v8.6.1.
On 10gR2, I cannot find the exact definition of the 2 following metrics :
"Physical Read Total Bytes Per Sec"
and
"Physical Read Bytes Per Sec"
I would want to know what is the difference between them.
I am trying to apply page validations on a tabular form. The form allows users to update data in a database table. I have created some validations such as "column x must not be null" etc and on submit, the error message appears and the relevant cells are highlighted in red. All ok so far.
However, for the primary key, I am relying on the table definitions in the Oracle database to not allow duplicate row entries. When a user tries to enter a duplicate row the error message appears but the relevant row / cells are not highlighted, just the row number is given. In a table with many rows this is a bit annoying.
Is there anyway to get the cells to highlight in red for such circumstances or do I need to create the primary keys within APEX itself?
APEX 4.2.1.00.08
Below is the external table definition and the content of csv file, why the first record fails ?
0546-0*LB-CRP*16*"Tech", ZAO*29-DEC-2009*29-DEC-2010***A051453*RU*29-DEC-2009*0***21-MAY-2010*21-MAY-2010 --FAILED
0546-0*LB-CRP*16*ID"Tech", ZAO*29-DEC-2009*29-DEC-2010***A051453*RU*29-DEC-2009*0***21-MAY-2010*21-MAY-2010 -- SUCCESS
0546-0*LB-CRP*16*"Tech, ZAO"*29-DEC-2009*29-DEC-2010***A051453*RU*29-DEC-2009*0***21-MAY-2010*21-MAY-2010 -- SUCCESS
[code]....
i want to use more than four db links in my stored procedure to retrieve data from different databases. but it says ORA-02020: too many database links are opened. i also wrote execute immediate to close some links but its not working.
View 16 Replies View RelatedWe have two databases A and B, both are 10g Enterprise edition and we have to replicate only one table from A to B. A is the source and B needs a read only copy. The source of A is modified by User through Oracle Forms.
A latency of 1day can be accepted though the lesser the better. The problem is that this company does not approve of DB links in any form or any tool which in the end has to create a DB link.
My job is running at 2 am and that time no application user is connected. Even though, my exp utility shows error on 3 tables (2 are temp tables), everyday. But when expdp is running without error, which was scheduled at 4 am.
Below are the error -
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options Export done in WE8MSWIN1252 character set and AL16UTF16 NCHAR character set
. . exporting table DW_TEST_MOTOR
EXP-00056: ORACLE error 1466 encountered
ORA-01466: unable to read data - table definition has changed
[Code].....
Seemingly a very simple problem, but I can't seem to figure it out. Table below is a table that holds UserId' s and LinkId's.
CREATE TABLE UserLink (UserId NUMBER, LinkId NUMBER );
ALTER TABLE UserLink ADD PRIMARY KEY (UserId, LinkId);
INSERT INTO UserLink VALUES (1, 1);
INSERT INTO UserLink VALUES (1, 2);
INSERT INTO UserLink VALUES (3, 1);
INSERT INTO UserLink VALUES (4, 1);
I'm looking for a query in which I can plug a List of LinkId's that outputs only users that have a relationship with ALL LinkId's provided. In this example you may assume that the List is equal to (1, 2), but you can't make any assumptions about the size of the list, other than size != 0. The query to find users that match ANY of the provided LinkId's is quite simple:
SELECT UserId FROM UserLink
WHERE LinkId IN (1,2)
The correct query should output:
USERID
------
1
And it should work for any size > 0 list of values.
Basically, we have 2 procedures in 2 different databases. One of them makes a call to the other over a database link passing an associative array as a parameters.
This has woked fine for many years 9.2.0.8.0 but we are in the process of migrating to 11.2.0.2.0 and have started getting compilation errors.
1 > Create TYPE in Database_1
=====================
CREATE OR REPLACE PACKAGE DB1_Pkg
IS
type x_tab is table of number index by binary_integer;
v_tab x_tab;
END DB1_Pkg;
[code]....
the thread title was a bit confusing, couldn't come up with anything short to describe the question. What I am looking for is a query which will put records into groups based on matching values in one of two columns. So if two records have a matching value in column 1 or column 2 they are in the same group. See the example bellow and expected output for a "better" explanation:
--setup
CREATE TABLE foo
(foo_id NUMBER NOT NULL PRIMARY KEY,
record_number NUMBER,
record_value VARCHAR2(1));
[Code]...
--expected output
group# foo_id record_number record_value
1 1 1 A
1 2 1 B
1 3 2 B
1 4 2 C
2 5 3 D
3 6 4 E
3 7 5 E
My initial thought is that is feels a little bit like the sequential seat problem but not quite close enough. I know it could be done iteratively with PL/SQL but I am thinking there must be a way to do it in SQL I am not seeing yet.
I've begun experiencing a very odd issue with one instance and all of their their db links. When I'm connected via telnet to the unix server, and I connect:
connect myuser/password via sql plus, I connect fine, and the link works.
but when I connect this way:
connect myuser/password@db.tnsname.entry.com using the TNS name specified, I again connect fine but the link calls fails with a TNS cannot resolve service name issue.
This is an existing instance with existing db links, but I repeat the issue on this machine alone with new links. the fully qualified name is the same name entry I'm using to create the link, both when it succeeds and when it fails. This is an 11g instance and the TNSnames file is in the ASM home.Also, i f I connect
connect sys as sysdba I get success as well. This behavior happens with both private and public database links. I'm not aware of any setting changes within this instance, and I've modified (after backing up) the TNSNames file with values from another that works perfectly well. Connecting via remote sqlplus or other JDBC connections gives the same error. Success connecting locally but failure connecting to DB Links when I'm remote. Connecting to the instance shows no issue.
Another instance on the network? An IP config issue in DNS? We have 100's of servers so it's needle in a haystack time. Can I run some sort of trace to see what it's calling to when it works and when it doesn't? (It selects another db's single table and I've confirmed the target is correct and the data is correct).
I have a view called V_MEDGEN_LISTRADIO but I can't run SELECT * FROM V_MEDGEN_LISTRADIO
ORA-02020: too many database links in useThe cause is that we call in the view 5 tables over dblink and the open_links parameter is set to 4.
What is strange is that when I run this select by adding a where clause then it works!
SELECT * FROM V_MEDGEN_LISTRADIO WHERE SPRR = 3645;
(use of index so all tables are not called ?)
I'm currently assessing the design/performance of a Distributed System in which hundreds of Field reps have local Oracle DBs (10.2.0.4) on laptops & have to update a remote database (11.2.0.1) via a PUBLIC database link. Field data (millions of records) collected daily is synched from the local to the remote DB & vise versa through this database link. I have 2 concerns here:
1. Is the database link the best option for such a configuration? (recently field reps have been complaining about the slowness in synchronizing data between local & remote DBs). If not, what other options are available for such processing?
2. I've read a lot about security concerns with using PUBLIC database links, but haven't seen any documents to proof they're a majority security issue. why PUBLIC database links are considered not to be very secure?
I am using SQL Developer.I am self-teaching myself PL/SQL. What I am trying accomplish is to run a select query across many database links at runtime and to insert that query onto a local table. So far, I have only gotten as far as querying the database link names. I am stuck at where my variable calls the database link name. It does not recognize the database link name, and I can't quite grasp the reason why. Below is the first part of my script which does retrieves the column values no problem:
001 SET SERVEROUTPUT ON
002 DECLARE
003 db_link_varVARCHAR2(30);
004 source_cursorINTEGER;
005 destination_cursorINTEGER;
006 src_csrINTEGER;
007 dst_csrINTEGER;
008 rundate_varDATE;
009 instance_name_var VARCHAR2(30);
[code]....
If I break the script down to the bare select query, it will query absolutely fine.If I run the script in its entirety, it will not pick up the variable dbl as a dynamic database link. 02019. 00000 - "connection description for remote database not found"
If I comment out line 031 and prevent the looping of querying of database links (which will only fetch the first value of db_link from dba_db_links), the script will complete and I will have a row inserted into my local table.
I am suspecting it's the looping that is incorrect but I understand it is not going to do anything beyond line 059.
how to find out what are all the objects referring to particular database links in database?
View 6 Replies View RelatedThere is a user account called 'BALA' in my database.I want to find out the database links that uses this 'BALA' account.
View 2 Replies View RelatedIs it possible to use the Oracle HAIP feature to bond multiple network links between Active and Standby database ?
Does this require a seperate license ?
Basically, I was looking for a solution for bonding the muliple WAN links that we have between the active and Standby database.
is there any way to refer a table which is in different schema other than using DB links.
View 5 Replies View RelatedA website requires to display consolidated data from databases located in different geographical regions (India, London and New York). The application server for the website is hosted only in one location India. What are the techniques that can be used for faster retrieval of data from all 3 databases?
Note: There is no need of real time data retrieval from different regions; however the user should able to view the updated data at predefined intervals.
I know how to use database links in various forms, but I've been trying to think through how the authentication works for a connected user link in 11g. If I create the link like this,
create public database link using 'orcl';
then any user can use the link, provided they have an identical username/password in the two databases. With pre-11g passwords, it was understandable: the password was salted with the username, so the hash of the password would be the same in both databases, and I assumed that the logon through the link used some sort of IDENTIFIED BY VALUES mechanism. But in 11g, the salt will different in the two databases. So the hash will be different. And of course Oracle never stores the actual password. So I don't see how the authentication works.
I would like to know if we can insert 300 million records into an oracle table using a database link. The target table is inproduction and the source table is in development on different servers.The target table will be empty and have its indexes disabled before the insert. if this can be accomplished in less than 1 hour.
View 26 Replies View RelatedI know how to use database links in various forms, but I've been trying to think through how the authentication works for a connected user link in 11g. If I create the link like this,create public database link using 'orcl';then any user can use the link, provided they have an identical username/password in the two databases. With pre-11g passwords, it was understandable: the password was salted with the username, so the hash of the password would be the same in both databases, and I assumed that the logon through the link used some sort of IDENTIFIED BY VALUES mechanism. But in 11g, the salt will different in the two databases. So the hash will be different. And of course Oracle never stores the actual password. So I don't see how the authentication works.
View 4 Replies View RelatedApplication which I`m creating would work only inside domain. In the report I would like to have a link to files that stored outside from oracle server ( so apex cannot see the file but knows the absolute path to the file ).
And when I click in the report on the link to the file I would like to have this file opened in the application controlled from my OS ( naturally if I have rights to the path specified given from domain level).
I have been trying with column link ( a href, file:// ) and none of them works. I want to avoid APEX from copying files to local path or opening using java or creating directory.
im working with apex 4.2.1 and when i try to define a Dynamic action on any item, if the action type is "Set Value" or execute SQL/Javascript code it should appear a text field that let me define the action taking place. However this wont do..
this is what happens:
And this is what should happen:
I know that patch 4.2.2 solves some issues regarding dynamic actions but in the bug report there's no reference to such a problem.