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Database Errors Interview Questions
Questions Answers Views Company eMail

ORA-30750: cannot enable column string to store objects of type string.string

1 2912

ORA-30751: cannot disable column string from storing objects of type string.string

1 3253

ORA-30752: column or table string is not substitutable

1 3044

ORA-30753: column or table string is substitutable

1 2697

ORA-30754: column or table string stores objects of only one type

1 2760

ORA-30755: error during expansion of view hierarchy

1 2815

ORA-30756: cannot create column or table of type that contains a supertype attribute

1 3548

ORA-30757: cannot access type information

1 4641

ORA-30765: cannot modify scope for an unscoped REF column

1 2802

ORA-30766: cannot modify scope for a REF column with a REFERENCES constraint

1 2742

ORA-30767: OID type mismatch

1 2857

ORA-30768: Cannot evaluate pipelined function

1 4364

ORA-30770: Cannot specify storage options for fixed size opaque type

1 2523

ORA-30771: Cannot add more than one referential constraint on REF column "string"

1 2639

ORA-30772: opaque types do not have default constructors

1 2927


Un-Answered Questions { Database Errors }

ORA-26095: unprocessed stream data exists

3594


ORA-26032: index string.string loading aborted after string keys

2124


How to solve -805 error i.e. Bind issue. There are two conditions- 1) If you have access to the database table 2) If you don't have access to the table

2661


how can i get the question papers of year 2006 and 2007 of 12th commerce gujarat board

2226


ORA-16516: The current state is invalid for the attempted operation.

8835


what is new g/l functionality

2632


When do you get "getwmicomexception"?

2693


IMP-00060: Warning: Skipping table "string"."string" because object type "string"."string" does not exist or has different identifier

3190


ORA-26094: stream format error: input column overflow

2825


I have written the code as below. here problem is that dt remain null. how to solve thst please tell me. public partial class Form1 : Form { private DataTable DTable; private DataRow drow; public Form1() { InitializeComponent(); } private OleDbConnection getConnection() { OleDbConnection con=new OleDbConnection (@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Documents and Settings\Administrator\My Documents\Visual Studio 2008\Projects\winApp for Student\winApp for Student\App_Data\SchooMgnSystem.mdb;Persist Security Info=True"); return con; } private void button1_Click(object sender, EventArgs e) { InsertData(); } private void InsertData() { if (DTable==null) { DTable = new DataTable(); DTable.Columns.Add("StudID", typeof(string)); DTable.Columns.Add("StudName", typeof (string)); DTable.Columns.Add("Address", typeof(string)); drow = DTable.NewRow(); drow[0] = txtStudID.Text; drow[1] = txtSTudName.Text; drow[2] = txtAddress.Text; DTable.Rows.Add(drow); grdStudent.DataSource = DTable; } else { drow = DTable.NewRow(); drow[0] = txtStudID.Text; drow[1] = txtSTudName.Text; drow[2] = txtAddress.Text; DTable.Rows.Add(drow); grdStudent.DataSource = DTable; } } private void button2_Click(object sender, EventArgs e) { string cmdstr; OleDbCommand cmd; OleDbConnection con = getConnection(); foreach (DataRow Drow in DTable.Rows) { cmdstr = "Insert into Student values('" + drow[0].ToString() + "','" + drow[1].ToString() + "','"+drow [2].ToString()+"')"; cmd = new OleDbCommand(cmdstr,con); try { con.Open(); cmd.ExecuteNonQuery(); } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { con.Close(); } } }

2666


ORA-26076: cannot set or reset value after direct path structure is allocated

1984


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

3400


Hi, I am trying to encode data from flatfile and then to decode the encoded data to original form. Procedures that I followed:- 1. Encoded the field 'A_ID' using AES_ENCRYPT(A_ID,'abd') in the expression transformation. The A_ID got encoded in the output table(oracle) 2. To decode this back I used AES_DECRYPT(A_ID,'abd'). But after executing the workflow, I am not getting any data in output. can anybody tell me how to decrypt the encoded data back to original form ??

1695


I entered the data in SQL toad version 9.0.1 in English and Arabic language but when i do the query i get the data in Arabic language with (??? question mark) ,please your support.

1673


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...

2756