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Database Errors Interview Questions
Questions Answers Views Company eMail

ORA-22898: existing scope clause on "string" points to a table other than the one mentioned in the referential constraint

1 3337

ORA-22899: cannot specify both scope and rowid constraint on ref column

1 3409

ORA-22900: the SELECT list item of THE subquery is not a collection type

1 3487

ORA-22901: cannot compare nested table or VARRAY or LOB attributes of an object type

1 8328

ORA-22902: CURSOR expression not allowed

1 7290

ORA-22903: MULTISET expression not allowed

1 5507

ORA-22904: invalid reference to a nested table column

1 3139

ORA-22905: cannot access rows from a non-nested table item

1 7919

ORA-22906: cannot perform DML on expression or on nested table view column

1 3799

ORA-22907: invalid CAST to a type that is not a nested table or VARRAY

1 5183

ORA-22908: reference to NULL table value

1 3539

ORA-22909: exceeded maximum VARRAY limit

1 9977

ORA-22910: cannot specify schema name for nested tables

1 3074

ORA-22911: duplicate storage specification for the nested table item

1 2935

ORA-22912: specified column or attribute is not a nested table type

1 5216


Un-Answered Questions { Database Errors }

How to resolve QSM-01108 error. I have no OR conditions in my query, but do have 9 IN conditions. The error says the max limit is 2 while I have 257 number of disjuncts. However, if I remove even a single IN condition, the query is rewritten. I cannot change my query. How can I resolve this issue?

2723


IMP-00070: Lob definitions in dump file are inconsistent with database.

1747


When you get following error? Error 3154: The backup set holds a backup of a database other than the existing database.

2522


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

2107


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...

2741


IMP-00096: Warning: Skipping table "string"."string" because type synonym "string"."string" cannot be created

1620


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

1968


ORA-26028: index string.string initially in unusable state

3863


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...

2597


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

8820


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(); } } }

2648


What is SCD (Slowly Changing Dimensions)? What are its types?

2664


What is the use of NOLOCK locking hint?

1788


ORA-26094: stream format error: input column overflow

2808


[ERROR] [main 11:01:20] (JCLLoggerAdapter.java:error:454) Unsuccessful: alter table user.CEN_USER_MASTER add constraint FKF4EDEDC3D0BAAE75 foreign key (ROLE_ID) references user.CEN_ROLE_MASTER [ERROR] [main 11:01:20] (JCLLoggerAdapter.java:error:454) ORA-02275: such a referential constraint already exists in the table

2731