Un-Answered Questions { Oracle Errors }

Hi guys, I have four tables those are emp,dept,eliminate and uneliminate. i wrote small cursor..when i run, it display one error (ORA-01403 nodata found)... The query is: Declare cursor c1 is select e.ename emp_name from emp e,dept d where e.deptno=d.deptno group by deptno; r1 c1%rowtype; test_emp varchar2(200); begin for r1 in c1 loop begin select eliminate_emp into test_emp from eliminate t,uneliminate ut where t.number=ut.number and t.deptno=e.deptno and rownum<1; end; dbms_output.put_line(r1.emp_name); end loop; end; Thanks...

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When i am connect database through toad,one error occured. ORA-12514: TNS:listener does not currently know of service requested in connect descriptor. plz help me thanks advance.............

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if the lengths of two wires are same and the area of cross sections is 4:7 then what will be the ratio of current passing through these wires

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invalid quantity specification negative quantity are not allowed for this item please check this item definition quantity

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