Oracle Recursive foreign key!!

I have a table with two recursive foreign keys. I want to do a delete statement that include rows that are linked by foreign keys. What will happen?Sorry for my english. ...

Oracle Creating Foreign Key Constraints

I am trying to run the below script to create a foreign key constraint in the table Tony1. I keep getting the error message: "ORA-00903: Invalid table name". This script is consistent with the online Oracle documentation. Please advise.create table TONY(league_id varchar2(10) PRIMARY KEY,league_desc ...

Oracle About Foreign Key constraint

I'm using Oracle 9.2.0.8 and I have a problem with FK constraintscompost with two columns. So, follows an example: create table t1 ( id1 number, id2 number , no varchar2(30) not null );   ALTER TABLE t1 ADD CONSTRAINT PK_t1 PRIMARY KEY (id1, id2);   ----   create table t2 ( code numbe ...

Oracle Enable foreign key constraint is slow

I am trying to enable a foreign key constraint using..alter table <table name> enable constraint <fk constraint name>;It takes a long time, in fact, it hangs. The SQL is shown to consume CPU, when seen from Oracle Enterprise Manager Top SQL page.Is this a bug?We have tried with and witho ...

Oracle Using FOreign key constraints on tables in database.

I am student and novice in the field of ORACLE and PL/SQL and Database Creation. I had created a database consisting tables and got problem while applying foreign key constraints. CUST_MSTRCREATE TABLE "DBA_BANKSYS"."CUST_MSTR"("CUST_NO" VARCHAR2(10), "FNAME" VARCHAR2(25), "MNAME" VARCHAR2(25), "LNA ...

Oracle Composite foreign key issue

I am trying to create a composite foriegn key. I have created my primary key as a composite key, made up of three fields.Table 1PatientID - Made from 3 fields(a,b,c)(primry key)Table BPatiendID- (should be the foreign key which references table1)However i am finding that when i try to create my cons ...

Oracle Can foreign key refer to a candidate key ?

I have a project table which has Project_ID and Course_ID as the primary keys (candidate key).If I create another table which has Project_ID and Course_ID as the primary keys, then how do I make them also as foreign keys. My question is can we reference foreign key to a candidate key ? ...

Oracle Where foreign key constraint is been physical store?

anyone know where the foreign key constraint is being physically stored at? Which tablespace? ...

Oracle Generating Foreign key hierarchy

I need to delete data from tables in the order of the their Foreign key hierarchy.For example if TableA is master, TableB is child to TableA, and TableC is child to TableB.My deletion order need to by TableC, followed by TableB, then followed TableA.Below are the commands to create the tables - CREA ...

Oracle recursive forgien key

i want to know what is recursive forgien key ...

Oracle Drop foreign key constraint without giving name of the constraint

We can drop primary key constraint in a table with this SQL command>ALter table fina_year drop primary key cascade/Is there any way to drop a foreign key constraint without specifing the name of the constraint. As the name of the constraint might be different if the same user exist in 2 different ...

Oracle Adding foreign key to multiple field primary key.

I'm trying to make Table1 with Field_1 and Field_2 as a primary key and want to make Table2 Field_2 a foreign key to Field_2 in Table1. It's saying there is no matching primary key I guess because of the multiple column primary key. I'm trying to enforce some kind of check at least to make sure the ...

Oracle Conditional Foreign Key Relationship

Suppose that in a table TA, column colA references column colA in table TB, which formsa foregin key relationship. But at some occasions, colB of TA would take a value which can't be found in colA of TB. For instance, colB of TA would take 1,2,3 or '*' as its value while colA of TB would take only 1 ...

Oracle List foreign key columns having different data length from the referencing

HiI have written the below query to list out all foreign key columns those have different datatypes or data_length from the columns that they are referencing.Is the query correct.select p.column_name, p.data_type, p.data_length,q.column_name, q.data_type, q.data_lengthfrom all_tab_columns p, all_tab ...

Oracle Finding foreign key constraint

I need script i specified primary key constraint and its gives the foreign key constraints. ...

Oracle Disable Foreign Key Constraints

I need to disable all constraints on a table before I can truncate it and I'm using a PL/SQL script to do it. I was able to successfully disable all active constraints on the table in question by selecting from user_constraints. However, there is still a foreign key constraint coming from another ta ...

Oracle Help !!!!! Foreign Key VIOLATED with Insert !!!

Sorry guys, i have a problem with "insert" into a table!When i insert a new row of values, in runtime Java give me an SQLEXCEPTION:foreign key FK.CLI violated !!!So my question is.... When i do an insert in general, i must first disable the foreign key between table and then i can do the insert ?p.s ...

Oracle retrieve foreign key definition!!

I would like to retrieve foreign key definition by SQL.The expected result is as follows.Child_table_name, constraint_name, child_columnS, parent_table_name, parent_columnS.--Could you give me a sql to retrive foreign key definition?? ...

Oracle add foreign key in another schemas tables

I want to set foreign key constraint from one schema tables to another schema tables.i give select privileges to another users table who want to set foreign key on the first. but i got insufficient privileges error. so what rights one user has to set foreign key on another user tables. ...

Oracle Putting Foreign Key on odd table design

The main guys for a project are currently on leave so I'm just fixing up some issues raised until they come back in a month or so.I was wondering what the best way to put a foreign key on a column on a table was.Here are the tablesABC_ASSESSMENT=================ABC_Assessment_ID Number (PK) DEF_ASSE ...

Oracle create foreign key across schema

have 10.2.0.3 database.I have two schemas test1 and test2SQL> connect test2/test2Connected.SQL> create table t12 (col1 number,col2 number, constraint pk_col1 primary key (col1));Table created.SQL> grant select on t1 to test1;Grant succeeded.SQL> connect test1/test1Connected.SQL> creat ...

Oracle Trigger foreign key doubt

I have two tables say employees and department tableemployees table has fk which is department id referencing department table.now i have a trigger ------------------------------------------------*/CREATE OR REPLACE TRIGGER fk_testAFTER UPDATE OF department_id ON employeesFOR EACH ROW BEGINUPDATE de ...

Oracle table foreign key cascade delete

i have table with a foreign key that reference a parent table primary key. when i try to delete the primary key row from the parent table. a constraint error occur as child record is found. i need to delete all the child records when i delete the parent row.is it possible for me to alter the table a ...

Oracle Apply foreign key violation

We are searching for a solution to intercept foreign key violations when applying changes.In a master/detail table layout, we limit the master table rows differently per destination when propagating. It is not possible to check all the same conditions when propagating the detail table, so the idea w ...

Oracle multiple foreign key references

I apologise if i am posting in the wrong directory, but i need a solution FAST!!Ive come accross a slight problem. I have an existing table named 'bedroom' and it has one foreign key. The FK has been named 'FK_bedroomLoc'. The problem is that the FK needs to reference two independent columns in two ...

Oracle DML foreign key error

Apologies if this has been answered here already, but I did some looking and couldn't find a matching problem. I've got a table called messages, defined like this: -- build the tableCREATE TABLE messages (id NUMBER CONSTRAINT pk_messages_id PRIMARY KEY,title VARCHAR2(255),body VARCHAR2(4000),created ...

Oracle Finding Foreign Key Referenced Table and Column

Can someone please refresh my memory?How can I determine what table and column a foreign key references? For example, with select * from ALL_constraints WHERE TABLE_NAME = 'MY_TABLE'; I can see constraints CONSTRAINTA_FK and CONSTRAINTB_FK that I'm guessing reference another table and column because ...

Oracle Can foreign key possible to non primary key column

Is it ok to create a foreign key to non primary key columns?that means i have a table as belowtable1 with col1 and col2 in which col1 is not null and a prinmary key.wher as col2 is a nullable column. And also col1 and col2 is a part of a unique key i have a nother table table2 in which col1 and col2 ...

Oracle Composite Foreign Key

please correct this syntax for composite foreign key. Ater Table emp_paysAdd Constraints emp_pt_fk Foreign Key(emp_id,pt_id) Referenes emp(emp_id),pay_type(pt_id); ...

Oracle Does foreign key help in query performence?

I have two tables.DeptDept_no(primary key) Name 10 Sales20 Marketing30 ProductionEmployeeEmpno Name Dept(foreign key(dept_no) 1 Emp1 102 Emp2 103 Emp3 204 Emp4 205 Emp5 30If i run the below queryselect * from dept a, employee b where b.dept=a.dept_no and a.dept_no=30;While fetching from the dept tab ...

Oracle primary – foreign key constrain error

I have a form based on a table T1. When I save this form or update this form it will insert/update the record in T1. At the same time when I update/create a record I need to insert a new record into another table T2. I have created a package to do that and it gets called from After Submit under Proc ...

Oracle creating foreign key relationship between two databases

Is it possible to create foreign key relationship between two databases.If possible,send me the way. ...

Oracle Update foreign key in child table with parent ID in trigger

I defined a parent table lsu_trans_requests_t and its child table lsu_trans_resources_t each with a primary key. The table lsu_trans_resources_t has a foreign key trans_request_id which naturally holds the primary key value of the parent record. I created a trigger on both tables to set the primary ...

Oracle updating foreign key

I am having two tables... primary key column in table A is acting as a foreign key column in Table B can i update the foreign key column to some other value? ...

Oracle finding foreign key which violates truncate

HiHow can I find which foreign key is violationg trucate ? so that I will disable itSQL> truncate table FLOWS_030000.WWV_FLOW_PAGE_PLUGS; truncate table FLOWS_030000.WWV_FLOW_PAGE_PLUGS * ERROR at line 1: ORA-02266: unique/primary keys in table referenced by enabled foreign keys ...

Oracle will Foreign Key allows Null values ??

will Foreign Key allows Null values ?? ...

Oracle May foreign key disappear after an "ALTER TABLE" ?

Today I notice that a foreign key on my table disappeared...And I absolutely didn't drop it !The only thing I made is an ALTER TABLE ADD () 2 weeks ago and I think the foreign key constraint also disappeared 2 weeks ago...Is there a possible link between these 2 facts ?Thx ...

Oracle Creating foreign key on different server

We have two different database servers.I want to create foreign key with the table that is on other server.at the initial level i am trying to "Grant References" but no possible.grant references on pur_det to purchase@orcl.btldb2pur_det table is in Schema "Sales" on Server 1, while Schema "Purchase" ...

Oracle logical foreign key display values

I have a schema in which the primary keys are auto generated numbers. Foreign keys exist from child tables to the primary key of the parent.I have figured out how to change auto generated forms to display a dropdown list of display/values to the user on insert or update instead of the meaningless nu ...

Oracle about foreign key and cascade

In oracle , on update cascade is supported , If so , give me the syntax on creating table with it . When creating it , got missing key word error . My user name vasudevan. ...

Oracle Multiple Foreign Key Reference on Same Table

I use Rational Rose for Database Design. There are 2 tables First is USER that has Primary Key UserIDLater is table BUDDYLIST that has 2 FK from USER i.e. OWNERID (Current User's ID) and BUDDYID (owner's Friends i.e. essentially existing USERs).Now u may say that use USER table and make self referen ...

Oracle Index + foreign key + optimizer

I searched the forums and saw different point of view about the necessity to use index for foreign keys. I read that these indexes are not mandatory since 9.x to avoid locks. Some said there are issues about it even in 10g.Some of our main tables contains these indexes (its been built with 7.3.4) an ...

Oracle indexing foreign key

Should i index all foreign keys in the table if there are more then 20 foreign keysplease reply ASAP. ...

Oracle A foreign key that references two primary key

I have 3 tables :DOCUMENT1 (ID_DOC1, ...)DOCUMENT2 (ID_DOC2, ...)VALID (DOC_ID, ...)What I want to do is making of DOC_ID a foreign_key that references either ID_DOC1, either ID_DOC2.Having two constraints on table VALID, of course, does not work.Any hints ? ...

Oracle a foreign key which references mutliple primary key

I have two table :T1p_idT2p_idand one other tableT3c_idfk_p_id I want fk_p_id references either p_id of T1 or if not exist p_id of T2.Is that possible ?Thx ...

Oracle Regarding Foreign Key

Suppose, I am havin two tables.:Emp:empid(pk) ename sal dept:deptno(pk) empid(fk) deptnameSuppose, I want to insert some values into dept-table's empid, Can I able to insert or that empid(fk)constraint restricts me to insert anything? ...

Oracle Can foreign key refer to unique key?

Hi.... ...

Oracle Reg : Foreign Key for Hierarchy Table

I created hierarchy table having 2 lac records by using Level and connect by prior concept .After that I updated primarykey for all the recods with sequence number .Now , I want to create foreignkey which refers the same table's primarykey .Please give me the solution .With example will be helpfull ...

Oracle locking related with foreign key

i find difficulty to understand locking system of oracle on foreign keyi collect there information on net.plz check these are correct or notbecause when i delete records from child tables then deletion on parent table is haltedand vice-versa --------check thisThe rules for locks that apply to foreig ...

Pass Foreign Key value Oracle/ASP

I have one asp page that is supposed to update two Oracle recordsets in a database.My schema is as follows:1 order has many order ItemsOrders{OrderID, Date, Delivery_Address, CC_Details}OrderItems{Order_item_ID, OrderID, Product_ID, QTY, Price}I am using a trigger to create the primary key(Order_ID) ...