1. what is a single procedure? 2. suppose a view constructed on a query... after that in the master table a column was dropped, then what will be the status of that view? will it be invalid or something else? 3. what is mutating table error? how can you solve that problem? 4. suppose "select * from emp where empno=7788;" is running slow because of what ever the cause it is.. how can you fix it and make the execution faster? 5. will the snapshot of data will be stored in the RAM , where will ir be stored exactly. 6. how to delete 100 tables or 100000 tables' data from the schema without writing delete statement for no.of times. write an sql statement to do that job. 7. suppose a package contains so many cursors, procedures and all.. and we are using such types of procedures so many in a program. so the execution is to be stored all those packages and all to the RAM. utimately it is using many resources for each time execution. how can you reduce the time and using of resources for each execution because the query need to be run many times. how can you tune that? 8. suppose a procudere is there with specs as (a,b,c,d), all of these are IN mode only then while calling them should we pass all the 4 arguments? how to pass (b,c) only.. how ever the specs are wrote in the same order displayed in the above? 9. a function is returning a table type, how to access that function in a select statement? 10. i have a table in database A and another table in database B, how can you access the data of these two tables? write a query for that with dblinks. 11. i have two tables might have 15/20 columns in that.. i wanna send these columns(table) to the front end application for example you are using asp.net by writing a procedure. write that to perform the above job. 12. shall we create a table in the package? 13. shall we create a table in the procedure? 14. suppose i have 10 records, in that i want to select 7th record. write a query for that. cant you use rownum for this? 15. suppose my procedure has got around 20 select statements, in that some three select statements are running very slow. what will you write to detect which queries are running slowly? 16. what fields you use frequently in plan_table? 17. what is pipeline function? explain me with an example. 18. does a unique column can contain more than one null? 19. how many hints are there provided by oracle?
5 6296hi friends, I have a table A col as status|NUM and value as open |1 open |2 close |3 close |3 the O/P should be open|close 1 |3 2 |4
CTS,
1 4181write a query to count number of alphabets in given string for example "APPLE" write a query to generate sequence from 50 to 100 write a query to display in single string "ABCD,EFGH,IJKL,PQRS"
7 9667create or replace procedure show_tab_rec ( P_tab VARCHAR2 )
IS
cmd varchar2(50);
begin
cmd := 'select *
from '|| P_tab;
for int in ( execute immediate cmd )
loop
dbms_output.put_line ( int.ename||' '||int.deptno);
end loop;
end;
when i m compling this procedure i m getting this error
PLS-00103: Encountered the symbol "IMMEDIATE" when expecting
one
of the following:
. ( ) , * @ % & | = - + < / > at in is mod remainder not
range rem => ..
HCL,
1 4176hello friends Im doing my final year engineering in B.Tech.. one of uncle said he can provide job in his company if im good in database management. but i have only basic knowledge about database, so like to join database management course in good intuition. so friends kindly help me to get good intuition because its my future.
1740what is the difference between joins and set operators.i am always confusing with two,can u pls kindly help me .
5 17298How i can handle exception in large code like 1000 line without distrubing the code or without exception handler sction?
2713Select all the employees who were hired in last 2 years and who works in dept where max managers are working.
ESS,
2437I have a table like this Table Name:Products Productid Price 1 10 1 10 2 20 3 30 3 30 But i want to output like this. productid price 2 20. please replay me.
TCS,
3 4702Do you know about aggregate functions? What is row num function? Can it be used all databases?
1 3503Post New Oracle General Questions
How to import one table back from a dump file?
Is a rollback possible to any savepoint?
What are the set operators union, union all, minus & intersect meant to do?
Why packages are used in oracle?
What is a parameter file in oracle?
What is a view and how is it different from a table?
How to define and use table alias names in oracle?
How can I see all tables in oracle?
How to load data through external tables?
What is an oracle cursor variable?
What is a oracle database?
How can we force the database to use the user specified rollback segment?
What is an oracle tablespace?
What are the various constraints used in oracle?
How to do clean up if create database failed?