ORA-01466: unable to read data - table definition has changed

During Exp we face the subjected error for few tables. and exp compeletes with warnings.No table has creation date greater than the sysdate, and fixed_date parameter is also not set.
Oracle version 9.2.0.8 on AIX 5.2
Can any body comment out to solve the issue.
thanks in advance...

extract from Oracle docs -
Specifies whether or not Export uses the SET TRANSACTION READ ONLY statement to ensure that the data seen by Export is consistent to a single point in time and does not change during the execution of the exp command. You should specify CONSISTENT=y when you anticipate that other applications will be updating the target data after an export has started.
If you use CONSISTENT=n, each table is usually exported in a single transaction. However, if a table contains nested tables, the outer table and each inner table are exported as separate transactions. If a table is partitioned, each partition is exported as a separate transaction.
Therefore, if nested tables and partitioned tables are being updated by other applications, the data that is exported could be inconsistent. To minimize this possibility, export those tables at a time when updates are not being done.
http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14215/exp_imp.htm

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Ora-01466 unable to read data table definition has changed oracle.

hi all,
i truncated a table before 10 min. now i want the data's so i used this query ;
select *
from ( select *
from sometable where some_condition )
as of timestamp sysdate-1;
but it shows:
""" ora-01466 unable to read data table definition has changed oracle"""";
how to get the deleted records from database????????????
Edited by: 887268 on Oct 24, 2011 4:02 AM

Error: ORA 1466
Text:   unable to read data -- object definition has changed
Cause: This is a time-based read consistency error for a database object,
        such as a table or index.
        Either of the following may have happened:
        The query was parsed and executed with a snapshot older than the time
        the object was changed.
        The creation time-stamp of the object is greater than the current
        system time.
        This happens, for example, when the system time is set to a time
        earlier than the creation time of the object.
Action: If the cause is
        an old snapshot, then commit or rollback the transaction and resume
        work.
        a creation time-stamp in the future, ensure the system time is set
        correctly.
        If the object creation time-stamp is still greater than the system
        time, then export the object's data, drop the object, recreate the
        object so it has a new creation time-stamp, import the object's data,
        and resume work.

How to solve this problem "ORA-01466: Unable to read data -- Table definiti

Hi,
I had deleted the entry and i want back now and in between i done the following
alter table pv_head enable constraint FK_PV_HED__CRF_HEDwhen i try in the following one
SELECT * FROM PV_HEAD AS OF TIMESTAMP TO_DATE('28-FEB-2011 9:45:00','DD-MON-YYYY HH24:MI:SS')
WHERE PV_NO IN (703705,703704) the error i am receiving
ORA-01466: Unable to read data -- Table definition has changed how to solve this issue.
please guide me.
Kanish

You can not perform DDL and then perform a flashback query to before the DDL.
One might wonder why you chose this particular time to perform an ALTER TABLE but you did. It is what it is.

Deleted Rows Flashback : unable to read data - table definition has changed

Hi All,
Its Really Important.
I Unfortunately truncated a table using
Trancate table mytable;
and Made a alter table to decrease data pricision length.
But i Need the tabla data back,
i used the below command to get deleted rows, it shows error.
query : select * from pol_tot versions between timestamp systimestamp-1 and systimestamp;
error : ORA-01466: unable to read data - table definition has changed
query : flashback table pol_tot to timestamp systimestamp - interval '45' minute;
error : ORA-01466: unable to read data - table definition has changed
Kindly Share your ideas How Can i Get thoose Deleted Records.
Edited by: 887268 on Jul 8, 2012 12:26 AM

BluShadow wrote:
Khayyam wrote:
Flashback dont works after DDL. Truncate command is DDL. Only recover from backup can help.Please don't spread untrue statements.Working of flashback after Drop command is so clear to say. I mean such DDL commands as CREATE, ALTER, TRUNCATE and so on...
"Remember that DDLs that alter the structure of a table (such as drop/modify column, move table, drop partition, truncate table/partition, and add constraint) invalidate any existing undo data for the table. If you try to retrieve data from a time before such a DDL executed, you will get error ORA-1466. DDL operations that alter the storage attributes of a table (such as PCTFREE, INITRANS, and MAXTRANS) do not invalidate undo data."
[http://docs.oracle.com/cd/B28359_01/appdev.111/b28424/adfns_flashback.htm#BJFJHDAG]

ORA-20503: Current version of data in database has changed since user initi

Hi,
I am getting the below error when I try to update an existing record.
"ORA-20505: Error in DML: p_rowid=11887, p_alt_rowid=CASE_ID, p_rowid2=, p_alt_rowid2=. ORA-20503: Current version of data in database has changed since user initiated update process. current checksum = "7EB7B6F69DB421184B4CEE0884E435C6" application checksum = "53106AB0EB97FD1442D85F2AAE3AFA69"
Error Unable to process row of table "
And this does not happen always. IT happens once in a while and I am unable to check what is causing the issue. It is a critical issue and need to be fixed asap.
Any help is greatly appreciated!
Thanks!
Kavya

We are using Apex version: 3.1.2.00.02
What else could be the reason and how should I fix it?
At this point the application is migrated and I am unable to write a custom package for the DML operations. And this issue happens randomly and that too only while updating the data.
Please help!

ORA-20001: Current version of data in database has changed since user.....

Hi,
I am having a tabular form which I created using the wizard
I am facing the below error when I try to update or 'Add Row'
Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-20001: ORA-20001: Current version of data in database has changed since user initiated update process."
I havenot changed the query but I made certain columns based on select list,gave some default values,etc..
How can I solve this problem?
Also,I am getting the above error once I change the query for another tabular form.The client wanted some more fields to be displayed on the page.
How can I solve this problem too?
Thanks and Regards,
K.tanna

Can somebody help me out?

ORA-20505: Error in DML - Version of data in db has changed

Hello,
Application Express 3.1.0.00.32
I have created a Report and Master Detail in the Sample Application on oracle.application.com. I am receiving an error on my Master Detail Form when clicking the <Previous and Next> buttons. I have viewed other issues like this in the forum but, it looks like everyone is a little different. Can anyone assist me with this error when browsing to the next record(s). Thanks in advance.
ORA-20505: Error in DML: p_rowid=6, p_alt_rowid=CUSTOMER_ID, p_rowid2=, p_alt_rowid2=. ORA-20503: Current version of data in database has changed since user initiated update process. current checksum = "E9A08EDC02A82871E6865DB254B09ED2" application checksum = "39454529513F24BE60C167752BF71750"
I created another Master Detail page and I do not have any errors when scrolling using <> buttons. Here is a process that may be causing my error using the original Master Detail page.
DECLARE
CUSTOMER_ID VARCHAR(20);
BEGIN
SELECT CUSTOMER_ID INTO :P21_CUSTOMER_ID
FROM DEMO_CUSTOMERS
WHERE CUST_FIRST_NAME = :P21_CUST_FIRST_NAME;
-- processing here
EXCEPTION
-- Catches all 'no data found' errors
   WHEN NO_DATA_FOUND THEN
     DBMS_OUTPUT.PUT_LINE
       ('No Data found for SEARCH on ' || CUSTOMER_ID);
END;Edited by: Charles A on Apr 30, 2009 11:40 AM

Hi Charles,
I've had a look at your page 21.
The problem was that the "Fetch Values 2" process was not conditional and was running in the "On Load - Before Header" process point. This meant that it was being run every time the page was being loaded. This process checks for the CUSTOMER_ID relating to the value in P21_CUST_FIRST_NAME which, because the "Fetch Row..." process hasn't been run at that point (it runs "On Load - After Header"), will always return the same CUSTOMER_ID value from when the page was first loaded. The Next/Previous buttons, however, moved the P21_CUSTOMER_ID forward/back one value (this became apparent when this field was changed from "Hidden and Protected" to "Text"). As a result, the data on the page was for "Albert" but the CUSTOMER_ID value was for whatever record was next/previous to the Albert one. Thus, moving next/previous always caused a mix of the actual data.
I have changed the "Fetch Values 2" process to be conditional on P21_CUSTOMER_ID being NULL. This way, the CUSTOMER_ID value is ONLY found by code when the page is first loaded. Thereafter, it is controlled by the Next/Previous functionality.
Andy

MRU Error : Current version of data in database has changed since user init

When i use HTMLDB Wizard to create Master Detail Form
(You can see step by step what i doing by see this url :
http://jroller.com/resources/w/wildan83/MRU%20Error.pdf
The is error in MRU :
Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-20001: ORA-20001: Current version of data in database has changed since user initiated update process. current checksum = "A884FA378C851786DDFE3A33709CB23C", item checksum = "0EEFFABE8252B0B279DB14A77F567F5D"., update "CNAP2"."ENROLLMENT" set "STUDENT_ID" = :b1, "SECTION_ID" = :b2, "ENROLL_DATE" = :b3, "FINAL_GRADE" = :b4.
If there something missing.., just say ..
Thanks for the help.

Oh i see ..,i never think if that is the source of the MRU
error.
Ok ..,
Now ..., i have new question .., how can i change so the the primay key in detail table (enrollment table), i have one primary key with two columns .., if you don't understand what i mean ..,
check this alter table statement :
ALTER TABLE ENROLLMENT
ADD CONSTRAINT ENR_PK PRIMARY KEY
(STUDENT_ID
,SECTION_ID) ;
Now the question is .., when i using wizard to create master detail form .., html db automatically make student_id and section_id as the primary at "application level (html db)" .., how can i change this behaviour ..,
i want the html db not treat this two column as primary key ?
Do i have to create master detail form manually to accomplish this ?
Thanks before .., sorry if my english is not too good.

ORA-27047: unable to read the header block of file

My Windows 2003 crashed which was running Oracle XE.
I installed Oracle XE on Windows XP on another machine.
I coped my D:\oracle\XE10g\oradata folder of Win2003 to the same location in WinXP machine.
When I start the database in WinXP using SQLPLUS i get the following message
SQL> startup
ORACLE instance started.
Total System Global Area 146800640 bytes
Fixed Size 1286220 bytes
Variable Size 62918580 bytes
Database Buffers 79691776 bytes
Redo Buffers 2904064 bytes
ORA-00205: error in identifying control file, check alert log for more info
I my D:\oracle\XE10g\app\oracle\admin\XE\bdump\alert_xe I found following errors
starting up 1 dispatcher(s) for network address '(ADDRESS=(PARTIAL=YES)(PROTOCOL=TCP))'...
starting up 4 shared server(s) ...
Oracle Data Guard is not available in this edition of Oracle.
Wed Apr 25 18:38:36 2007
ALTER DATABASE MOUNT
Wed Apr 25 18:38:36 2007
ORA-00202: control file: 'D:\ORACLE\XE10G\ORADATA\XE\CONTROL.DBF'
ORA-27047: unable to read the header block of file
OSD-04001: invalid logical block size (OS 2800189884)
Wed Apr 25 18:38:36 2007
ORA-205 signalled during: ALTER DATABASE MOUNT...
ORA-00202: control file: 'D:\ORACLE\XE10G\ORADATA\XE\CONTROL.DBF'
ORA-27047: unable to read the header block of file
OSD-04001: invalid logical block size (OS 2800189884)
Please help.
Regards,
Zulqarnain

Try to install win 2003 server software, do the fresh installation of oracle software, now copy the datafiles and controlfiles to same locations as you did on winxp.
get back to us, if still not out of the woods. I still doubt that a simple restore would do the trick, since you doing it across different platforms, might be I can be wrong, but this is what I personally feel, you not able to start the database on winxp.
hare krishna
Alok

TcpListener not working on Azure: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host

Hi Everybody,
i'm playing a little bit with Windows Azure and I'm blocked with a really simple issue (or maybe not).
I've created a Cloud Service containing one simple Worker Role. I've configured an EndPoint in the WorkerRole configuration, which allows Input connections via tcp on port 10100.
Here the ServiceDefinition.csdef file content:
<?xml version="1.0" encoding="utf-8"?>
<ServiceDefinition name="EmacCloudService" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceDefinition" schemaVersion="2014-01.2.3">
<WorkerRole name="TcpListenerWorkerRole" vmsize="Small">
<Imports>
<Import moduleName="Diagnostics" />
<Import moduleName="RemoteAccess" />
<Import moduleName="RemoteForwarder" />
</Imports>
<Endpoints>
<InputEndpoint name="Endpoint1" protocol="tcp" port="10100" />
</Endpoints>
</WorkerRole>
</ServiceDefinition>
This WorkerRole is just creating a TcpListener object listening to the configured port (using the RoleEnvironment instance) and waits for an incoming connection. It receives a message and returns a hardcoded message (see code snippet below).
namespace TcpListenerWorkerRole
using System;
using System.Net;
using Microsoft.WindowsAzure.ServiceRuntime;
using System.Net.Sockets;
using System.Text;
using Roche.Emac.Infrastructure;
using System.IO;
using System.Threading.Tasks;
using Microsoft.WindowsAzure.Diagnostics;
using System.Linq;
public class WorkerRole : RoleEntryPoint
public override void Run()
// This is a sample worker implementation. Replace with your logic.
LoggingProvider.Logger.Info("TcpListenerWorkerRole entry point called");
TcpListener listener = null;
try
listener = new TcpListener(RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Endpoint1"].IPEndpoint);
listener.ExclusiveAddressUse = false;
listener.Start();
LoggingProvider.Logger.Info(string.Format("TcpListener started at '{0}:{1}'", RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Endpoint1"].IPEndpoint.Address, RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Endpoint1"].IPEndpoint.Port));
catch (SocketException ex)
LoggingProvider.Logger.Exception("Unexpected exception while creating the TcpListener", ex);
return;
while (true)
Task.Run(async () =>
TcpClient client = await listener.AcceptTcpClientAsync();
LoggingProvider.Logger.Info(string.Format("Client connected. Address='{0}'", client.Client.RemoteEndPoint.ToString()));
NetworkStream networkStream = client.GetStream();
StreamReader reader = new StreamReader(networkStream);
StreamWriter writer = new StreamWriter(networkStream);
writer.AutoFlush = true;
string input = string.Empty;
while (true)
try
char[] receivedChars = new char[client.ReceiveBufferSize];
LoggingProvider.Logger.Info("Buffer size: " + client.ReceiveBufferSize);
int readedChars = reader.Read(receivedChars, 0, client.ReceiveBufferSize);
char[] validChars = new char[readedChars];
Array.ConstrainedCopy(receivedChars, 0, validChars, 0, readedChars);
input = new string(validChars);
LoggingProvider.Logger.Info("This is what the host sent to you: " + input+". Readed chars=" + readedChars);
try
string orderResultFormat = Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\xB")) + @"MSH|^~\&|Instrument|Laboratory|LIS|LIS Facility|20120427123212+0100||ORL^O34^ORL_O34| 11|P|2.5.1||||||UNICODE UTF-8|||LAB-28^IHE" + Environment.NewLine + "MSA|AA|10" + Environment.NewLine + @"PID|||patientId||""""||19700101|M" + Environment.NewLine + "SPM|1|sampleId&ROCHE||ORH^^HL70487|||||||P^^HL70369" + Environment.NewLine + "SAC|||sampleId" + Environment.NewLine + "ORC|OK|orderId|||SC||||20120427123212" + Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\x1c\x0d"));
writer.Write(orderResultFormat);
catch (Exception e)
LoggingProvider.Logger.Exception("Unexpected exception while writting the response", e);
client.Close();
break;
catch (Exception ex)
LoggingProvider.Logger.Exception("Unexpected exception while Reading the request", ex);
client.Close();
break;
}).Wait();
public override bool OnStart()
// Set the maximum number of concurrent connections
ServicePointManager.DefaultConnectionLimit = 12;
DiagnosticMonitor.Start("Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString");
RoleEnvironment.Changing += RoleEnvironment_Changing;
return base.OnStart();
private void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
// If a configuration setting is changing
LoggingProvider.Logger.Info("RoleEnvironment is changing....");
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
As you can see, nothing special is being done. I've used the RoleEnvironment.CurrentRoleInstance.InstanceEndpoints to retrieve the current IPEndpoint.
Running the Cloud Service in the Windows Azure Compute Emulator everything works fine, but when I deploy it in Azure, then I receive the following Exception:
2014-08-06 14:55:23,816 [Role Start Thread] INFO EMAC Log - TcpListenerWorkerRole entry point called
2014-08-06 14:55:24,145 [Role Start Thread] INFO EMAC Log - TcpListener started at '100.74.10.55:10100'
2014-08-06 15:06:19,375 [9] INFO EMAC Log - Client connected. Address='196.3.50.254:51934'
2014-08-06 15:06:19,375 [9] INFO EMAC Log - Buffer size: 65536
2014-08-06 15:06:45,491 [9] FATAL EMAC Log - Unexpected exception while Reading the request
System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
--- End of inner exception stack trace ---
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.IO.StreamReader.ReadBuffer(Char[] userBuffer, Int32 userOffset, Int32 desiredChars, Boolean& readToUserBuffer)
at System.IO.StreamReader.Read(Char[] buffer, Int32 index, Int32 count)
at TcpListenerWorkerRole.WorkerRole.<>c__DisplayClass0.<<Run>b__2>d__0.MoveNext() in C:\Work\Own projects\EMAC\AzureCloudEmac\TcpListenerWorkerRole\WorkerRole.cs:line 60
I've already tried to configure an internal port in the ServiceDefinition.csdef file, but I get the same exception there.
As you can see, the client can connect to the service (the log shows the message: Client connected with the address) but when it tries to read the bytes from the stream, it throws the exception.
For me it seems like Azure is preventing the retrieval of the message. I've tried to disable the Firewall in the VM in Azure and the same continues happening.
I'm using Windows Azure SDK 2.3
Any help will be very very welcome!
Thanks in advance!
Javier
En caso de que la respuesta te sirva, porfavor, márcala como válida
Muchas gracias y suerte!
Javier Jiménez Roda
Blog: http://jimenezroda.wordpress.com

hi Javier,
I changed your code like this:
private AutoResetEvent connectionWaitHandle = new AutoResetEvent(false);
public override void Run()
TcpListener listener = null;
try
listener = new TcpListener(
RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Endpoint"].IPEndpoint);
listener.ExclusiveAddressUse = false;
listener.Start();
catch (SocketException se)
return;
while (true)
IAsyncResult result = listener.BeginAcceptTcpClient(HandleAsyncConnection, listener);
connectionWaitHandle.WaitOne();
The HandleAsync method is your "While (true)" code:
private void HandleAsyncConnection(IAsyncResult result)
TcpListener listener = (TcpListener)result.AsyncState;
TcpClient client = listener.EndAcceptTcpClient(result);
connectionWaitHandle.Set();
NetworkStream netStream = client.GetStream();
StreamReader reader = new StreamReader(netStream);
StreamWriter writer = new StreamWriter(netStream);
writer.AutoFlush = true;
string input = string.Empty;
try
char[] receivedChars = new char[client.ReceiveBufferSize];
// LoggingProvider.Logger.Info("Buffer size: " + client.ReceiveBufferSize);
int readedChars = reader.Read(receivedChars, 0, client.ReceiveBufferSize);
char[] validChars = new char[readedChars];
Array.ConstrainedCopy(receivedChars, 0, validChars, 0, readedChars);
input = new string(validChars);
// LoggingProvider.Logger.Info("This is what the host sent to you: " + input + ". Readed chars=" + readedChars);
try
string orderResultFormat = Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\xB")) + @"MSH|^~\&|Instrument|Laboratory|LIS|LIS Facility|20120427123212+0100||ORL^O34^ORL_O34| 11|P|2.5.1||||||UNICODE UTF-8|||LAB-28^IHE" + Environment.NewLine + "MSA|AA|10" + Environment.NewLine + @"PID|||patientId||""""||19700101|M" + Environment.NewLine + "SPM|1|sampleId&ROCHE||ORH^^HL70487|||||||P^^HL70369" + Environment.NewLine + "SAC|||sampleId" + Environment.NewLine + "ORC|OK|orderId|||SC||||20120427123212" + Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\x1c\x0d"));
writer.Write(orderResultFormat);
catch (Exception e)
// LoggingProvider.Logger.Exception("Unexpected exception while writting the response", e);
client.Close();
catch (Exception ex)
//LoggingProvider.Logger.Exception("Unexpected exception while Reading the request", ex);
client.Close();
Please try it. For this error message, I suggest you could refer to this thread (http://stackoverflow.com/questions/6173763/using-windows-azure-to-use-as-a-tcp-server
) and this post (http://stackoverflow.com/a/5420788).
Regards,
Will
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Good morning, experts.
I´ve just installed the SAP Download Manager, but I can´t get connected to Marketplace.
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User name: S0005951541
Password: (my password)
Proxy (my proxy settings)
Any ideas?

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This project is to match multiple templates, then i copied the method from the example "Match Multiple Geometric Pattens", but the error says:
Error -1074395989 occurred at IMAQ ReadImageAndVisionInfo
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Attachments:
Multiple-Match-Pattern.zip ‏331 KB

Hello,
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K
https://decibel.ni.com/content/blogs/kl3m3n
"Kudos: Users may give one another Kudos on the forums for posts that they found particularly helpful or insightful."

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