Selecting from another schema

If I want to select table from another schema, I have to type
select * from [username].table_name.
What can I do inorder not to write shema name all the time.
for instance:
instead of writing
select * from [username].table_name.
select * from table_name.

create synonym for the object in other schema:
create synonym <syn-name> for schema.tablename;
then use syn-name in place of schema.tablename in ur query
like
select * from syn-name;

Similar Messages

Selection from Another schema by default without schema name qualifier.

Hi
Oracle10g release 2, LinuxOS
i want my schema (User_1) to always select,insert, update, delete the objects from another schema (User_2) without passing full schema qualifier every time whenever i don't pass any schema name explicitly.
i.e. if i pass the following guerry
select * from table_a;
the table of user User_2.table_a (User_2.table_a) will be queried by default instead of table (User_1.table_a)
and the same implementation is also required in Functions , procedures, sequences etc.
Wishes

Three relatively easy options
1) Create private synonyms in User_1's schema for each object in User_2's schema, i.e.
CREATE SYNONYM table_a
FOR user_2.table_a2) Create public synonyms for each object in User_2's schema. This will make it possible for all users to query user_2's objects without specifying the schema name
CREATE PUBLIC SYNONYM table_a
FOR user_2.table_a3) Change the current schema for the session (potentially in a login trigger)
ALTER SESSION SET current_schema = USER_2There are other options that are a bit more complicated like using enterprise users with shared schemas. But most people are perfectly happy with one of these three.
Justin

Cant view objects from another schemas

Hi everybody!
I have a 10.1.2 Jdeveloper and a 9.2.4 Oracle database.
I successfully created a database connection.
With provided login I can access to tables from another schemas in SQL Worksheet, but I cant see any objects from those schemas in the connection tree.
What's wrong?

The Schemas are being filtered so that you only automatically see the schema for the connection that you logged on with. To change the schemas that are visible you need to :
1) Select the connection name in the Navigator (you should see that it has a filter icon overlaid showing that it is being filtered)
2) Invoke the context menu and select 'Apply filters'
3) Shuttle over the other Schemas you wish to see and press OK
Regards,
Lisa Sherriff
JDev QA

SQL Report From Another Schema

Is there anyway to select a table from another schema?I have a default schema for my application but i want each user to use their own schema.
I'm looking for something like #OWNER#.table_name but replacing #OWNER# with the name of another schema in the workspace.
Kind Regards,
BgUrsea
APEX 4.0 10g XE

Hello BgUrsea,
you could achieve this by granting the needed privileges (e.g. select, insert, update, delete) on each table in the #OWNER#-schema to your applications parsing schema.
If you can't use a direct mapping (e.g., you can't assign the schema name of a user as usernames for his application user), you probably need a mapping table in your parsing schema. Define an application item (e.g. "F_OWNER") and create a application computation that executes "On New Instance" and does something like
SELECT schema
FROM mapping_table
WHERE owner=v('APP_USER');If you aren't sure you always have a mapping, you might think about an application process that not only computes the value but also handles the action to be performed in case there is no mapping for a user.
But I suppose it could be easier to have a copy of you application for each user and assign the appropriate schema to each copy. That way, you don't need the mapping, you don't need to care about always using the #OWNER# when developing your application, and of course, no user can (not even accidently) access another users (or your default) schema.
-Udo

How can i access all the objects of one schema from another schema

Dear All,
How can i access all the objects(Tables,Views,Triggers,Procedures,Functions,Packages etc..) and do the modifications of one schema from another schema (Without using synonyms concept).
Thanks in advance,
Mahi

First of all, synonyms only help you easy reference the object. It doesn't have any implication of object privilege.
As long as you have proper privilege on target object. You can access it with or without synonyms.
Assuming you have proper privilege of objects, you can use following command to assume schema owner.
ALTER SESSION SET CURRENT_SCHEMA = Schema_owner

How to populate a table based on a row selection from another table.

Hi, i just started to use ADF BC and Faces. Could some one help me or point me a solution on the following scenario .
By using a search component , a table is being displayed as a search result. If i select any row in the resulted table , i need to populate an another table at the bottom of the same page from another view. These two tables are related by primary key . May i know how to populate a table based on a row selection from another table. Thanks
ganesh

I understand your requirement and the tutorial doesn't talk about Association between the views so that you can create a Master-Detail or in DB parlance, a Parent-Child relationship.
I will assume that we are dealing with two entities here: Department and Employees where a particular Department has many Employees and hence a Parent-Child relationship.
Firstly, you need to create an Association between the two Entities - Department and Employees. You can do that by right clicking on the model's entity and then associating the two entities with the appropriate key say, DepartmentId.
Once you have done that, you need to link the two entities in the View section with this Association that you created. Then go to AppModule and make sure that in the Available View Objects: 'EmployeesView' appears under 'DepartmentView' as "EmployeesView via <link you created>". Shuttle the 'DepartmentView' to the right, Data Model and then shuttle
"EmployeesView via <link you created>" to the right, Data Model under 'DepartmentView'.
This will then be reflected in your Data Controls. After that, you simply would have to drag this View into your page as a Master-Detail form...and then when you run this page, any row selected in the Master table, would display the data in the Detail table.
Also, refer to this link: [Master-Detail|http://baigsorcl.blogspot.com/2010/03/creating-master-detail-form-in-adf.html]
Hope this helps.

How do I select from multiple schema's

How do I select from multiple schema's
Tried:
SELECT * FROM schema1.table1, schema2.table2
WHERE schema1.table1.column1 = schema2.table2.column2;
Errored......

Thanks
We finally got in touch with our DBA and he said the same thing.
SELECT t1.*,
t2.*
FROM schema1.table1 t1,
schema2.table2 t2
WHERE t1.column1 = t2.column2;
I'll try it afther I finish a task my boss just gave me.
BRB then.

How to select data from another schema in Oracle-Sqldeveloper?

Hi,
I open two schemas, assumed schema1 and schema2, in SQL-Developer. In the SQL-Edit Area of schema1 I want to select data from schema2. So I did followings:
select * from schema2.table1;
But I got error message: 00942. 00000 - "table or view does not exist"
What could be the problem?

Correct place for your question is SQL Developer (Not for general SQL/PLSQL questions)
Oh my bad.. Check previous post.. Its privilege issue.
Message was edited by: Karthick_Arp

Renaming View from another schema

Hi,
I've 2 schemas namely department , hr
Now department schema is having one table EMP . And a view is created on that table with the name R_EMP
Schema Name : department
Table Name : EMP
View Name : R_EMP
GRANT SELECT ON R_EMP TO HR ;
In HR schema a synonym has been created on view R_EMP with the name R_EMP .
CREATE OR REPLACE SYNONYM hr.R_EMP for department.R_EMP
Schema Name : hr
Synonym Name: R_EMP
Now I want to rename the view name R_EMP to V_EMP from HR schema only
So, I tried the folloiwng syntax in HR schema (All the operations should be done from this schema only )
[code]
RENAME department.R_EMP to department.V_EMP ;
Error:
ORA-01765: specifying table's owner name is not allowed
[/code]
How to change the syntax to make the statement work from HR schema .
Thank You .

Smile,
The questions is pretty much answered now. You might want to have a look at this as well.
How to rename a table in another user's schema
You can alter the session to set your current schema to the name of the schema where you want to rename the view and then do a direct rename.
Thanks,
Ishan

How to defer constraint of one schema from another schema

Hi All,
I am having a requirement of migrating data from one schema(SCHEMA_A) to another schema(SCHEMA_B). So I tried to implement the same using PL/SQL.
Because of foreign key contraint while migrating child table, Oracle throws an error message like parent key not available.
So I tried to set the all contraints to deferred and after completion of migration i planned to set all the contraints to immediate.
But Here I am executing the procedure from schema(SCHEMA_C) which has rights to access SCHEMA_A and SCHEMA_B.
How could I able to defer all the constraint in SCHEMA_B from SCHEMA_C?
Thanks in Advance,
Antany.

Yes,
You could run something like this, for foreign keys:
BEGIN
FOR cur_rec IN (SELECT table_name, constraint_name FROM DBA_CONSTRAINTS WHERE OWNER = <owner> AND CONSTRAINT_TYPE = 'R' )
    LOOP
      EXECUTE IMMEDIATE 'ALTER TABLE <owner>.' || cur_rec.table_name || ' DISABLE CONSTRAINT ' || cur_rec.constraint_name;
    END LOOP;
END;
/

To kill session in one schema from another schema

Hi Team,
I got a problem like a table from one of my schema has been locked. I am getting 'ORA-00054: resource busy and acquire with NOWAIT specified' error when trying to delete rows from that table or even when trying to truncate that table.
Let the table be 'T1' present in schema 'VIEW'
I tried to kill the session which is active for that schema by below query
select sid,serial#,status from v$session where username='VIEW' and STATUS = 'ACTIVE';
alter system kill session '681,2586';
But i couldn't do the above as i don't have DBA privilege for that. But i have DBA privilege for another schema let it be 'ADMIN'
Now how can i kill the session in schema 'VIEW' from schema 'ADMIN'
can any one get me solution.
Thanks in Advance
11081985

I got a problem like a table from one of my schema has been locked. I am getting 'ORA-00054: resource busy and acquire with NOWAIT specified' error when trying to delete rows from that table or even when trying to truncate that table.
Before you do anything why don't you actually find out WHY that table has been locked.
You generally should NOT be killing sessions without knowing what is causing the problem to begin with.
Then you also need to determine if you should use KILL SESSION or instead use DISCONNECT SESSION and well as whether the use of IMMEDIATE is appropriate.
Each of those choices acts differently. Many people use KILL when they should really use DISCONNECT.
See DISCONNECT SESSION Clause and KILL SESSION Clause in the ALTER SESSION chapter of the SQL Language doc
http://docs.oracle.com/cd/E11882_01/server.112/e17118/statements_2014.htm#i2282145

Create stored procedure with table from another schema throws PLS-00201

Oracle 10g. I'm new to procedures, so maybe I'm missing something obvious.
Schema owner ABC has table T2001_WRITEOFF. The SYSDBAs granted SIUD to Some_Update_Role, and granted that role to developer user IJK. User IJK then created a private synonym T2001_WRITEOFF for ABC.T2001_WRITEOFF. This worked with normal SQL DML commands.
When I try to create a simple procedure as follows, it throws PLS-00201 identifier 'T2001_WRITEOFF' must be declared, and points to the 2nd line.
create or replace procedure woof1(
fooname in T2001_WRITEOFF.territory%TYPE, <=== error points here
bardesc IN T2001_WRITEOFF.ind_batch_submit%TYPE) IS
BEGIN
INSERT into T2001_WRITEOFF
VALUES ( fooname, bardesc);
END woof1;
What am I doing wrong?
Thanks
JimR

Hi,
The reason I've heard has to do with knowing when a procedure becomes invalid due to privileges being revoked. Any time a grant to a role is revoked, you would have to check all procedures that depended on that role to know if they were still valid. Even worse, since roles can be granted to other roles, every time a role is revoked from another role, you would have to check all procedures that depended on anything to see if they were still valid.
Oracle 11 behaves the same as earlier versions in this regard, and I don't expect this to change.
This whole thread applies only to AUTHID DEFINER stored procedures (which is the default). If you can make the procedure AUTHID CURRENT_USER, then you can run it with privileges granted through roles. Usually, however, you really want AUTHID DEFINER, and granting the necessary privileges directly to the procedure owner (or to PUBLIC) isn't too hard.

Function: I get ORA-04063 if I try to execute from another schema

Hi All,
I have a schema named "SCHEMA_A" and in this schema I have a function named TEST" that gets a numeric parameter "ID" and returns a string.
Then I have a schema named "SCHEMA_B" with a grant on functions SCHEMA_A.TEST. I want to use function "TEST" from SCHEMA_B.
If I try to execute SELECT SCHEMA_A.TEST(1) FROM DUAL inside schema SCHEMA_B I get ORA-04063.
But if I try to execute TEST(1) from owner schema (SCHEMA_A) and then again from SCHEMA_B it works. But it works only for parameter with value = 1.
If I try SELECT SCHEMA_A.TEST(2) FROM DUAL I get again ORA-04063. It seems that to use a specific value for function parameter, I need to execute first in the owner schema and only after that I can execute from the other schema.
Function code is very simple:
+CREATE OR REPLACE FUNCTION TEST(ID IN NUMBER)+
+RETURN VARCHAR2+
+IS+
+l_return VARCHAR2(256);+
+BEGIN+
+l_return := 'hello world';+
+RETURN (l_return);+
+END TEST;+
I use Oracle 11g R2.
Any idea why it happens?...

I can compile and grant as you did.
But if I try to execute from a schema different by owner (in your case SCOTT) something like
SELECT <your schema>.TEST(1) FROM DUAL
I get an error.
To fix, I have to execute this function in the owner schema with exactly the same parameter.
If I execute with a parameter in the owner schema (suc as 1,2 and 3), I can execute also in schema different by owner (in your case SCOTT). But if I try with a new parameter (es: 4) from SCOTT it give me an error.
Strange...

Constraints From another schema

Hi Guys,
I have a table referral_contacts which has a column customer_id.This col is coming from a synonym whose base table is in another schema.
So the current requirement is to establish the referential constratint from that table .I think there is no way to add constraint from a synonym whose base table is in another schema.Is there any method to achieve this without crating the same table .
Any suggestions,coments are highly appreciated.
Thanks,
Prafulla

Hi Prafulla
It will be very tough for maintenance in long term if you create cross-reference constraints across schemas. That won't be a good design unless the same application owns both schemas. If each schema is used by different application and that only the second schema is populated with data realtime which is needed by the other application then you can create a new table and refresh it from the other schema in real time as well. You can check Materialized views (fast refresh, incremental refresh, using rowid, etc) for this purpose or you can also look at various other options (using trigger on the second schema to populate the new table in your schema and keep this in sync with that).
Just for your information, Materialized views is a feature of EE. Tell us more about your environment

SELECT from multiple schema's

How do I select/insert/update/delete from multiple schema's.
Tried:
SELECT * FROM schema1.table1, schema2.table2
WHERE schema1.table1.column1 = schema2.table2.column2;
Errored......

Hello
you need to use an alias for each table
tylerd@UAT51> select dual.dummy from dual, dual
2 /
select dual.dummy from dual, dual
ERROR at line 1:
ORA-00918: column ambiguously defined
tylerd@UAT51> select dual_1.dummy,dual_2.dummy from dual dual_1, dual dual_2
2 /
D D
X X
1 row selected.

Selecting from another schema

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