UDP packet checksum error

We got two SF4800 running Oracle RAC on Solaris 9 and Sun Cluster 3.1. We found the udpInCksumErrs counter dumps up suddenly when the server loading increases. We tried to use an packet analyzer software to monitor a mirrored network ports of them, but failed to find any UDP packets with incorrect check sum.
What is the meaning of udpInCksumErrs? Will it affect the system?

As far as I know, the Sun Cluster heartbeat does not use UDP. It just uses raw ethernet frames of type 0833. You can see these if you do a snoop on the interface. I pretty sure that the UDP packets are from the Oracle RAC distributed lock manager/cache fusion.
I would have thought, again, that RAC would create the packets it needed and ask Solaris to send them. (I'm checking this with a colleague). From scanning the bugs database, it would appear that there are a number of recommendations:
* Ensure the latest patches have been applied
* Make sure the system has been installed in accordance with Sun's EIS checklist (if Sun installed the system this would have happened).
Which says:
When using supported network adapters which use the ce driver for private
transport, insert into file /etc/system:
set ce:ce_taskq_disable=1
Also see InfoDoc:79189
Tim
---

Similar Messages

JMF How to stream rtp from udp packet

I implemented an rtsp client and use the client to setup two rtp session(audio, vedio). But when I use the example pramgram "AVReceive3" to stream the udp packet, it doesn't work.
When the AVReceive3 receive the udp packet from the rtp port, it will call the update(ReceiveStreamEvent evt) function, and the event type is StreamMappedEvent, and the call to evt.getReceiveStream().getDataSource() return null.
I thought the first event should be NewReceiveStreamEvent. Please help to solve the problem.
What's rtp packet will cause the event StreamMappedEvent.
Following is the code of AVReceive3.java:
* AVReceive3.java
* Created on 2007年10月30日, 下午4:11
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package PlayerTest;
import java.io.*;
import java.awt.*;
import java.net.*;
import java.awt.event.*;
import java.util.Vector;
import javax.media.*;
import javax.media.rtp.*;
import javax.media.rtp.event.*;
import javax.media.rtp.rtcp.*;
import javax.media.protocol.*;
import javax.media.protocol.DataSource;
import javax.media.format.AudioFormat;
import javax.media.format.VideoFormat;
import javax.media.Format;
import javax.media.format.FormatChangeEvent;
import javax.media.control.BufferControl;
* AVReceive3 to receive RTP transmission using the RTPConnector.
public class AVReceive3 extends Thread implements ReceiveStreamListener, SessionListener,
ControllerListener
String sessions[] = null;
RTPManager mgrs[] = null;
Vector playerWindows = null;
boolean dataReceived = false;
Object dataSync = new Object();
public AVReceive3(String sessions[])
this.sessions = sessions;
public void run()
initialize();
public boolean initialize() {
try {
mgrs = new RTPManager[sessions.length];
playerWindows = new Vector();
SessionLabel session;
// Open the RTP sessions.
for (int i = 0; i < sessions.length; i++) {
// Parse the session addresses.
try {
session = new SessionLabel(sessions);
} catch (IllegalArgumentException e) {
System.err.println("Failed to parse the session address given: " + sessions[i]);
return false;
System.err.println(" - Open RTP session for: addr: " + session.addr + " port: " + session.port + " ttl: " + session.ttl);
mgrs[i] = (RTPManager) RTPManager.newInstance();
mgrs[i].addSessionListener(this);
mgrs[i].addReceiveStreamListener(this);
// Initialize the RTPManager with the RTPSocketAdapter
mgrs[i].initialize(new RTPSocketAdapter(
InetAddress.getByName(session.addr),
session.port, session.ttl));
// You can try out some other buffer size to see
// if you can get better smoothness.
BufferControl bc = (BufferControl)mgrs[i].getControl("javax.media.control.BufferControl");
if (bc != null)
bc.setBufferLength(350);
} catch (Exception e){
System.err.println("Cannot create the RTP Session: " + e.getMessage());
return false;
// Wait for data to arrive before moving on.
long then = System.currentTimeMillis();
long waitingPeriod = 30000; // wait for a maximum of 30 secs.
try{
synchronized (dataSync) {
while (!dataReceived &&
System.currentTimeMillis() - then < waitingPeriod) {
if (!dataReceived)
System.err.println(" - Waiting for RTP data to arrive");
dataSync.wait(1000);
} catch (Exception e) {}
if (!dataReceived) {
System.err.println("No RTP data was received.");
close();
return false;
return true;
public boolean isDone() {
return playerWindows.size() == 0;
* Close the players and the session managers.
protected void close() {
for (int i = 0; i < playerWindows.size(); i++) {
try {
((PlayerWindow)playerWindows.elementAt(i)).close();
} catch (Exception e) {}
playerWindows.removeAllElements();
// close the RTP session.
for (int i = 0; i < mgrs.length; i++) {
if (mgrs[i] != null) {
mgrs[i].removeTargets( "Closing session from AVReceive3");
mgrs[i].dispose();
mgrs[i] = null;
PlayerWindow find(Player p) {
for (int i = 0; i < playerWindows.size(); i++) {
PlayerWindow pw = (PlayerWindow)playerWindows.elementAt(i);
if (pw.player == p)
return pw;
return null;
PlayerWindow find(ReceiveStream strm) {
for (int i = 0; i < playerWindows.size(); i++) {
PlayerWindow pw = (PlayerWindow)playerWindows.elementAt(i);
if (pw.stream == strm)
return pw;
return null;
* SessionListener.
public synchronized void update(SessionEvent evt) {
if (evt instanceof NewParticipantEvent) {
Participant p = ((NewParticipantEvent)evt).getParticipant();
System.err.println(" - A new participant had just joined: " + p.getCNAME());
* ReceiveStreamListener
public synchronized void update( ReceiveStreamEvent evt) {
System.out.println("\nReceive an receiveStreamEvent:"+evt.toString());
RTPManager mgr = (RTPManager)evt.getSource();
Participant participant = evt.getParticipant(); // could be null.
ReceiveStream stream = evt.getReceiveStream(); // could be null.
System.out.println("The RTPManager is:");
if (evt instanceof RemotePayloadChangeEvent) {
System.err.println(" - Received an RTP PayloadChangeEvent.");
System.err.println("Sorry, cannot handle payload change.");
System.exit(0);
else if (evt instanceof NewReceiveStreamEvent) {
try {
stream = ((NewReceiveStreamEvent)evt).getReceiveStream();
DataSource ds = stream.getDataSource();
// Find out the formats.
RTPControl ctl = (RTPControl)ds.getControl("javax.media.rtp.RTPControl");
if (ctl != null){
System.err.println(" - Recevied new RTP stream: " + ctl.getFormat());
} else
System.err.println(" - Recevied new RTP stream");
if (participant == null)
System.err.println(" The sender of this stream had yet to be identified.");
else {
System.err.println(" The stream comes from: " + participant.getCNAME());
// create a player by passing datasource to the Media Manager
Player p = javax.media.Manager.createPlayer(ds);
if (p == null)
return;
p.addControllerListener(this);
p.realize();
PlayerWindow pw = new PlayerWindow(p, stream);
playerWindows.addElement(pw);
pw.setVisible(true);
// Notify intialize() that a new stream had arrived.
synchronized (dataSync) {
dataReceived = true;
dataSync.notifyAll();
} catch (Exception e) {
System.err.println("NewReceiveStreamEvent exception " + e.getMessage());
return;
else if (evt instanceof StreamMappedEvent) {
if (stream != null)
if(stream.getDataSource()!=null)
DataSource ds = stream.getDataSource();
// Find out the formats.
RTPControl ctl = (RTPControl)ds.getControl("javax.media.rtp.RTPControl");
System.err.println(" - The previously unidentified stream ");
if (ctl != null)
System.err.println(" " + ctl.getFormat());
System.err.println(" had now been identified as sent by: " + participant.getCNAME());
else if (evt instanceof ByeEvent) {
System.err.println(" - Got \"bye\" from: " + participant.getCNAME());
PlayerWindow pw = find(stream);
if (pw != null) {
pw.close();
playerWindows.removeElement(pw);
* ControllerListener for the Players.
public synchronized void controllerUpdate(ControllerEvent ce) {
Player p = (Player)ce.getSourceController();
if (p == null)
return;
// Get this when the internal players are realized.
if (ce instanceof RealizeCompleteEvent) {
PlayerWindow pw = find(p);
if (pw == null) {
// Some strange happened.
System.err.println("Internal error!");
System.exit(-1);
pw.initialize();
pw.setVisible(true);
p.start();
if (ce instanceof ControllerErrorEvent) {
p.removeControllerListener(this);
PlayerWindow pw = find(p);
if (pw != null) {
pw.close();
playerWindows.removeElement(pw);
System.err.println("AVReceive3 internal error: " + ce);
* A utility class to parse the session addresses.
class SessionLabel {
public String addr = null;
public int port;
public int ttl = 1;
SessionLabel(String session) throws IllegalArgumentException {
int off;
String portStr = null, ttlStr = null;
if (session != null && session.length() > 0) {
while (session.length() > 1 && session.charAt(0) == '/')
session = session.substring(1);
// Now see if there's a addr specified.
off = session.indexOf('/');
if (off == -1) {
if (!session.equals(""))
addr = session;
} else {
addr = session.substring(0, off);
session = session.substring(off + 1);
// Now see if there's a port specified
off = session.indexOf('/');
if (off == -1) {
if (!session.equals(""))
portStr = session;
} else {
portStr = session.substring(0, off);
session = session.substring(off + 1);
// Now see if there's a ttl specified
off = session.indexOf('/');
if (off == -1) {
if (!session.equals(""))
ttlStr = session;
} else {
ttlStr = session.substring(0, off);
if (addr == null)
throw new IllegalArgumentException();
if (portStr != null) {
try {
Integer integer = Integer.valueOf(portStr);
if (integer != null)
port = integer.intValue();
} catch (Throwable t) {
throw new IllegalArgumentException();
} else
throw new IllegalArgumentException();
if (ttlStr != null) {
try {
Integer integer = Integer.valueOf(ttlStr);
if (integer != null)
ttl = integer.intValue();
} catch (Throwable t) {
throw new IllegalArgumentException();
* GUI classes for the Player.
class PlayerWindow extends Frame {
Player player;
ReceiveStream stream;
PlayerWindow(Player p, ReceiveStream strm) {
player = p;
stream = strm;
public void initialize() {
add(new PlayerPanel(player));
public void close() {
player.close();
setVisible(false);
dispose();
public void addNotify() {
super.addNotify();
pack();
* GUI classes for the Player.
class PlayerPanel extends Panel {
Component vc, cc;
PlayerPanel(Player p) {
setLayout(new BorderLayout());
if ((vc = p.getVisualComponent()) != null)
add("Center", vc);
if ((cc = p.getControlPanelComponent()) != null)
add("South", cc);
public Dimension getPreferredSize() {
int w = 0, h = 0;
if (vc != null) {
Dimension size = vc.getPreferredSize();
w = size.width;
h = size.height;
if (cc != null) {
Dimension size = cc.getPreferredSize();
if (w == 0)
w = size.width;
h += size.height;
if (w < 160)
w = 160;
return new Dimension(w, h);
public static void main(String argv[]) {
//if (argv.length == 0)
// prUsage();
String sessions[]= new String[] {"127.0.0.1/6670","127.0.0.1/6672"};
AVReceive3 avReceive = new AVReceive3(sessions);
if (!avReceive.initialize()) {
System.err.println("Failed to initialize the sessions.");
System.exit(-1);
// Check to see if AVReceive3 is done.
try {
while (!avReceive.isDone())
Thread.sleep(1000);
} catch (Exception e) {}
System.err.println("Exiting AVReceive3");
static void prUsage() {
System.err.println("Usage: AVReceive3 <session> <session> ");
System.err.println(" <session>: <address>/<port>/<ttl>");
System.exit(0);
}// end of AVReceive3
Following is the code of RTPSocketAdapter.java:
* RTPSocketAdapter.java
* Created on 2007年10月30日, 下午4:13
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package PlayerTest;
import java.io.IOException;
import java.net.InetAddress;
import java.net.DatagramSocket;
import java.net.MulticastSocket;
import java.net.DatagramPacket;
import java.net.SocketException;
import javax.media.protocol.DataSource;
import javax.media.protocol.PushSourceStream;
import javax.media.protocol.ContentDescriptor;
import javax.media.protocol.SourceTransferHandler;
import javax.media.rtp.RTPConnector;
import javax.media.rtp.OutputDataStream;
* An implementation of RTPConnector based on UDP sockets.
public class RTPSocketAdapter implements RTPConnector {
DatagramSocket dataSock;
DatagramSocket ctrlSock;
InetAddress addr;
int port;
SockInputStream dataInStrm = null;
SockInputStream ctrlInStrm = null;
SockOutputStream dataOutStrm = null;
SockOutputStream ctrlOutStrm = null;
public RTPSocketAdapter(InetAddress addr, int port) throws IOException {
this(addr, port, 1);
public RTPSocketAdapter(InetAddress addr, int port, int ttl) throws IOException {
try {
if (addr.isMulticastAddress()) {
dataSock = new MulticastSocket(port);
ctrlSock = new MulticastSocket(port+1);
((MulticastSocket)dataSock).joinGroup(addr);
((MulticastSocket)dataSock).setTimeToLive(ttl);
((MulticastSocket)ctrlSock).joinGroup(addr);
((MulticastSocket)ctrlSock).setTimeToLive(ttl);
} else {
dataSock = new DatagramSocket(port, InetAddress.getLocalHost());
ctrlSock = new DatagramSocket(port+1, InetAddress.getLocalHost());
} catch (SocketException e) {
throw new IOException(e.getMessage());
this.addr = addr;
this.port = port;
* Returns an input stream to receive the RTP data.
public PushSourceStream getDataInputStream() throws IOException {
if (dataInStrm == null) {
dataInStrm = new SockInputStream(dataSock, addr, port);
dataInStrm.start();
return dataInStrm;
* Returns an output stream to send the RTP data.
public OutputDataStream getDataOutputStream() throws IOException {
if (dataOutStrm == null)
dataOutStrm = new SockOutputStream(dataSock, addr, port);
return dataOutStrm;
* Returns an input stream to receive the RTCP data.
public PushSourceStream getControlInputStream() throws IOException {
if (ctrlInStrm == null) {
ctrlInStrm = new SockInputStream(ctrlSock, addr, port+1);
ctrlInStrm.start();
return ctrlInStrm;
* Returns an output stream to send the RTCP data.
public OutputDataStream getControlOutputStream() throws IOException {
if (ctrlOutStrm == null)
ctrlOutStrm = new SockOutputStream(ctrlSock, addr, port+1);
return ctrlOutStrm;
* Close all the RTP, RTCP streams.
public void close() {
if (dataInStrm != null)
dataInStrm.kill();
if (ctrlInStrm != null)
ctrlInStrm.kill();
dataSock.close();
ctrlSock.close();
* Set the receive buffer size of the RTP data channel.
* This is only a hint to the implementation. The actual implementation
* may not be able to do anything to this.
public void setReceiveBufferSize( int size) throws IOException {
dataSock.setReceiveBufferSize(size);
* Get the receive buffer size set on the RTP data channel.
* Return -1 if the receive buffer size is not applicable for
* the implementation.
public int getReceiveBufferSize() {
try {
return dataSock.getReceiveBufferSize();
} catch (Exception e) {
return -1;
* Set the send buffer size of the RTP data channel.
* This is only a hint to the implementation. The actual implementation
* may not be able to do anything to this.
public void setSendBufferSize( int size) throws IOException {
dataSock.setSendBufferSize(size);
* Get the send buffer size set on the RTP data channel.
* Return -1 if the send buffer size is not applicable for
* the implementation.
public int getSendBufferSize() {
try {
return dataSock.getSendBufferSize();
} catch (Exception e) {
return -1;
* Return the RTCP bandwidth fraction. This value is used to
* initialize the RTPManager. Check RTPManager for more detauls.
* Return -1 to use the default values.
public double getRTCPBandwidthFraction() {
return -1;
* Return the RTCP sender bandwidth fraction. This value is used to
* initialize the RTPManager. Check RTPManager for more detauls.
* Return -1 to use the default values.
public double getRTCPSenderBandwidthFraction() {
return -1;
* An inner class to implement an OutputDataStream based on UDP sockets.
class SockOutputStream implements OutputDataStream {
DatagramSocket sock;
InetAddress addr;
int port;
public SockOutputStream(DatagramSocket sock, InetAddress addr, int port) {
this.sock = sock;
this.addr = addr;
this.port = port;
public int write(byte data[], int offset, int len) {
try {
sock.send(new DatagramPacket(data, offset, len, addr, port));
} catch (Exception e) {
return -1;
return len;
* An inner class to implement an PushSourceStream based on UDP sockets.
class SockInputStream extends Thread implements PushSourceStream {
DatagramSocket sock;
InetAddress addr;
int port;
boolean done = false;
boolean dataRead = false;
SourceTransferHandler sth = null;
public SockInputStream(DatagramSocket sock, InetAddress addr, int port) {
this.sock = sock;
this.addr = addr;
this.port = port;
public int read(byte buffer[], int offset, int length) {
DatagramPacket p = new DatagramPacket(buffer, offset, length, addr, port);
try {
sock.receive(p);
} catch (IOException e) {
return -1;
synchronized (this) {
dataRead = true;
notify();
System.out.println("RTPSocketAdapter receive RTP packet from port:"+port);
System.out.println("The received RTP packet:"+new String(buffer));
return p.getLength();
public synchronized void start() {
super.start();
if (sth != null) {
dataRead = true;
notify();
public synchronized void kill() {
done = true;
notify();
public int getMinimumTransferSize() {
return 2 * 1024; // twice the MTU size, just to be safe.
public synchronized void setTransferHandler(SourceTransferHandler sth) {
this.sth = sth;
dataRead = true;
notify();
// Not applicable.
public ContentDescriptor getContentDescriptor() {
return null;
// Not applicable.
public long getContentLength() {
return LENGTH_UNKNOWN;
// Not applicable.
public boolean endOfStream() {
return false;
// Not applicable.
public Object[] getControls() {
return new Object[0];
// Not applicable.
public Object getControl(String type) {
return null;
* Loop and notify the transfer handler of new data.
public void run() {
while (!done) {
synchronized (this) {
while (!dataRead && !done) {
try {
wait();
} catch (InterruptedException e) { }
dataRead = false;
if (sth != null && !done) {
sth.transferData(this);
Thanks.

The error of No format has been registered for RTP Payload type 96
is caused by the dynamic payload mapping, when I add the dynamic mapping between dynamic payload and format. The Player cann't work yet. I think it because JMF doesn't support the format of my clips. For example:
video: a=rtpmap:96 H263-2000/90000
audio:a=rtpmap:97 MP4A-LATM/12000/1
Is there some available plugin to support these format?
Thanks

UDP close causing error #1

hey
i have written a simple VI to stream data acquired from a DAQ card over
a network using UDP packets. it is working fine, but when i terminate
the program the UDP Close VI is causing error #1 to occur. does anyone
know how i can solve this problem?
i have attached a gif of most of the block diagram.
Attachments:
udp error.gif ‏32 KB

Ben wrote:
Try replacing the tunnels that bring the UDP conncetion reference in and out of the For loop in the bottom loop with a shift register.
If the For loop iterates "zero" times the contents of its output tunnel will be the default value.
Just to clarify what Ben just said:
Using Tunnel (your code): If the FOR loop iteration count is zero, the UDP reference output from the loop is reset to default.
Using Shift register: If the FOR loop iteration count is zero, the UDP reference is output unchanged from the shift register input and is thus valid.
LabVIEW Champion . Do more with less code and in less time .

NDIS 6.5 offload checksum test failure - HCK NDIS 6.5 not accepting packet checksum

We are developing NDIS 6.x miniport driver and are running NDIS Test 6.5 and are encountering failures in Offload Checksum when Rx checksum offload is enabled. The failures are as below indicating that the notified packets are not accepted by HCK test ,
even though it receives the packets . We have validated that the checksum is correct by recalculating it in driver and also through wireshark captures on the receiving and send sides.
We hereafter refer to the test adapter as Test10GCard and the support adapter as Support10GCard.
To eliminate the issue, we also have swapped the role of the Test10GCard and Support10GCard . In this case, the Test10GCard became the support adapter and Support10Gcard as the "card under test". In this case, the test failed in send itself,
as the packet notified by Test10Gcard to the stack , even when checksum offload is disabled was not accepted.
We have looked at NET_BUFFER, NET_BUFFER_LIST , packet and checksums as well.
Any suggestions? We have been stuck on this for a long time now.
Thanks
Deva
10001
StartTime: 02:48:48.497
Checksum offload - Test Tcp receive checksum offload with Ipv4 ( Tcp checksum recv offload: On/Tcp Option: Off/Ipv4 Option: Off). Packet count: 30; Packet header size: 54; Packet total size 784
CommunicationHelper::StartReceive
- Name: TestDeviceSimpleCommHelper
- Type: SimpleCommunicationHelper
- Traffic Manager Type: NDT_SIMPLE_TRAFFIC_MGR
- Receive Process Mech: NDT_PROCESS_RECEIVE_AT_PASSIVE
- Configured NetBufferModuleStack:
- [1] NDT_STRESS_PAYLOAD_MODULE
- [2] NDT_TCP_OFFLOAD_MODULE
- [3] NDT_IPV4_HEADER_MODULE
- [4] NDT_ETHERNET_MEDIA_HEADER_MODULE
- STATUS: NDIS_STATUS_SUCCESS
CommunicationHelper::StartSend
- Name: SuppDeviceSimpleCommHelper
- Type: SimpleCommunicationHelper
- Traffic Manager Type: NDT_SIMPLE_TRAFFIC_MGR
- Send Mechanism: NDT_SEND_AT_PASSIVE
- Send Complete Mech: NDT_VERIFY_SEND_COMPLETE_AT_PASSIVE
- NDIS Send Flags: 0
- Send Latency (ms): 0
- Preallocated NBL Count: 1
- Configured NetBufferModuleStack:
- [1] NDT_STRESS_PAYLOAD_MODULE
- [2] NDT_TCP_OFFLOAD_MODULE
- [3] NDT_IPV4_HEADER_MODULE
- [4] NDT_ETHERNET_MEDIA_HEADER_MODULE
- STATUS: NDIS_STATUS_SUCCESS
EndPoint::WaitForSendsToComplete
- Name: SuppDeviceSimpleCommHelper_EndPoint
- Timeout (ms): 300000
EndPoint::StopReceive
- Name: TestDeviceSimpleCommHelper_EndPoint
- Timeout (ms): 5000
EndPoint::GetSendResults
- Name: SuppDeviceSimpleCommHelper_EndPoint
EndPoint::GetReceiveResults
- Name: TestDeviceSimpleCommHelper_EndPoint
EndPoint::GetSendResults
- Name: SuppDeviceSimpleCommHelper_EndPoint
Test Tcp receive checksum offload with Ipv4
Tcp Checksum Offload Enabled
Tcp Option
Ip Option
StressPayload Test Conclusion
StressPayload Test Explanation
Tcp Send Packet Number
Tcp Recv Packet Number
Accepted Checksum Recv Offload Packet Number
Tcp Offload Test Conclusion
Tcp Offload Test Explanation
Yes
No
No
Passed
N/A
30
30
0
Failed
Tcp Module expected to get 30 packets, but only accepted 0;The miniport is expected to report 30 packets with correct checksum, but only gets 0;
50019 Test case failed. For detailed information, please see the above log table
Possible failure reason

Hi Mudit,
Thanks for your replay. I checked the NDIS6.5 Checkconnectivity and Checkconfig these tests were passed. The above Same logic I applied for L3 Check-sum, then all variations were passed. But only the TCP/UDP
packets only NDIS is not accepting. I put the wire-shark on both sides the packets were same i.e integrity is fine.
Regards
Mallesh

How can i attach a user-specified header to each UDP packet?

Hello,
i have here a question about UDP:
i want to stream live-videos using UDP. To avoid/observe some possible problems that could occur (e.g. wrong packet-order, packet loss etc.) i am planning to add a header to each UDP packet with e.g. frame-nr. , frame-size, packet-nr...
Question:
1. (How) Can i control the UDP packet size in LabVIEW?
2. If possible, how can i add a user specified header to each/certain (e.g. the first or the last packet of the frame) packet?
Thanks!
WLAN
Message Edited by wlan on 01-26-2007 03:02 AM

WLAN,
i just copied the help regarding the max size-terminal from the LV-help:
"max size is the maximum number of bytes to read. The default is 548. Windows If you wire a value other than 548 to this input, Windows might return an error because the function cannot read fewer bytes than are in a packet"
So, please do not change this value....
UDP creates packets from the data you transmitt. Each packet in Windows should have a size of 548 bytes or less. So this should read one whole packet at a time.... Decreasing this could lead to problems if the packet is larger.... Increasing this value changes nothing since the packets themselfs do not get larger only by trying to read more bytes..... Since you cannot alter the packetsize from LV, you shouldnt bother about that anymore.
And to add (again): UDP does not garantuee ANY correct transission. So you will never get any note if the first packet of a frame was lost. If you need some kind of garantuee for this, you have to use TCP (btw. infact, the TCP header uses 192 bytes, containing the infos like seen in the attached gif).
regards,
NorbertMessage Edited by Norbert B on 01-31-2007 11:12 AM
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.
Attachments:
tcp_header.gif ‏9 KB

Checksum errors on MLS 6509 Sup1A

Hi All,
I see many checksum errors(Show logging) on MLS 6509 and Sup1A.
Some times required logs are missing due to these checksum error logs.
Can I find from which Ethernet port I am receiving these error frames?
Is there any command to disable these error display in show logging?
Regards,
Madan.

Unfortunately, the only way to find the origin of this packet with bad checksum is to sniff the packets, but which vlan to sniff? If you are running hybrid start sniffing the vlan that the sc0 belongs to. If you are running Native it will be a bit trickier but start with vlan 1 if it exists. These packet are easy to spot, the sniffer trace will show you any packet with bad checksum.
Please rate all posts.

TNS:packet checksum failure

I recently installed a local oracle database running off my computer. When I try to connect to it, I get a "TNS:packet checksum failure" error. I have searched for an explanation and learned that I should retry and, if that fails, to "set up a tracer." This has consistently failed. How do I fix it or set up a tracer?
I can post code if necessary.
Thanks!

CCMP:/var/opt/oracle:>set
APPL_TOP=/opt/appl/r10
BKPLOG=/var/log/oracle/bkp
C='\c'
DBA=/opt/oracle/dba
EDITOR=vi
ENV=/opt/oracle/.profile
ERRNO=2
FCEDIT=/bin/ed
HOME=/opt/oracle
IFS='
LC_COLLATE=en_CA.ISO8859-1
LC_CTYPE=en_CA.ISO8859-1
LC_MESSAGES=C
LC_MONETARY=en_CA.ISO8859-1
LC_NUMERIC=en_CA.ISO8859-1
LC_TIME=en_CA.ISO8859-1
LD_LIBRARY_PATH=/usr/lib:/usr/ucblib:/usr/ccs/lib:/usr/dt/lib:/usr/openwin/lib:/data/CCMP/oracle/10.2.0.2/lib/
LINENO=1
LOGNAME=oracle
MAIL=/var/mail//oracle
MAILCHECK=600
MANPATH=/usr/share/man:/opt/local/man
N=''
NEWSID=CCMP
NLS_DATE_FORMAT='DD-MON-YYYY hh24:mi:ss'
NLS_DATE_LANGUAGE=AMERICAN
NLS_LANG=AMERICAN_AMERICA.WE8ISO8859P1
NLS_NUMERIC_CHARACTERS=.,
OLDHOME=/data/CO3P/oracle/10.2.0.3-64
OLDPWD=/data/CCMP/oracle/10.2.0.2
OPTIND=1
ORACLE_BASE=/opt/app/oracle
ORACLE_DOC=/opt/app/oracle/doc
ORACLE_HOME=/data/CCMP/oracle/10.2.0.2
ORACLE_SID=CCMP
ORACLE_TERM=vt220
ORACLE_TRACE=NO
ORAHOME=/data/CCMP/oracle/10.2.0.2
ORA_NLS=/data/CCMP/oracle/10.2.0.2/ocommon/nls/admin/data
ORA_NLS32=/data/CCMP/oracle/10.2.0.2/ocommon/nls/admin/data
PATH=/usr/bin:/usr/ucb:/opt/oracle/bin:/usr/ccs/bin:/bin:/opt/local/bin:/data/CCMP/oracle/10.2.0.2/bin
PATH_DEV=/usr/ccs/bin:/bin
PATH_LOC=/opt/local/bin
PATH_SYS=/bin:/usr/bin:/usr/ucb:/etc:/usr/ccs/bin:/usr/proc/bin:/usr/sbin
PPID=18442
PS1='$ORACLE_SID:$PWD:>'
PS2='> '
PS3='#? '
PS4='+ '
PWD=/var/opt/oracle
RANDOM=18750
SECONDS=5289
SHELL=/bin/ksh
SQLPATH=/opt/oracle/dba/sqlrun/sql
SSH_CLIENT='172.19.15.70 50896 22'
SSH_CONNECTION='172.19.15.70 50896 168.94.168.179 22'
SSH_TTY=/dev/pts/4
TERM=vt100
TMOUT=0
TMPDIR=/var/tmp
TNS_ADMIN=/var/opt/oracle/
TZ=Canada/Pacific
ULIMIT=unlimited
USER=oracle
WORKDIR=/tmp
_=ccmp

CMOS Checksum Error on MSI 785GM-E51

Hi, I have 2 years old MSI 785GM-E51. Approximately 2 - 3 months ago, my PC just go hang without any reasons, even the mouse / keyboard won't respond to anything.
After I reset, sometimes it's fine, but sometimes it's hang again, the interval is random. Sometimes it even hang when in the POST or when i enter BIOS setting.
After several restart, it's sometimes gives me CMOS Checksum Error, so I decided to reset the CMOS using jumper method. After that my PC just works normal.
Until a week ago, my pc start to hang randomly again, the symptom is similar but this time sometimes it's not hang, but the PC just restart immediately with black / white / blue random pattern
displayed momentarily on the screen. And it always display CMOS Checksum Error. I already tried reinstalling Windows, and updating BIOS via flash disk from Live Update 5, no use.
I already tried to plug out my VGA and using the onboard one, still crash / hang randomly. I also test Memtest overnight with passing 11 pass without error.
Is it my motherboard already dead? or it's my PSU? CPU?
Here is my complete specs:
AMD Phenom II X4 955BE
MSI 785GM-E51
DDR3 Dual Channel 4GB RAM (corsair, forgot the model)
Radeon 5770
WDC 1TB
WDC 1.5TB
Amacrox Free Style 650W
Thanks in advance.

Quote
Yesterday i desperate enough and change some BIOS settings, and
surprisingly, the CPU is much cooler!
Try entering bios, hitting f6 for optimized defaults then save and exit. See if problem persists.
Quote
As far as I remember, no, the crash / hang time i remembered is when POST / boot / startup / browsing / install app / playing games / copy file.
And one more thing, when it hangs, it really hangs, not just the windows, sometimes it even not respond to reset button, so i have to power it off. But sometimes it respond
to reset button, but with quite a long delay, it could half a minute i think.
Have you tried re-seating the cpu,memory and all of the power connectors etc?
What are the amp ratings on the 12v rail of the PSU? I found this on thier website but dont have time to dig furthur: Quote
4-Channel 12V Rails Design
Although the VGA you list only needs 24a on a 12v rail.
Quote
what's cpuid / ram timings / spd? where i can look at it?
http://www.cpuid.com/
When the program opens, take a screen shot of the tab that describe how your ram is running, It will show the current timings,speed, single or dual channel. Also take a ss of the spd tab, which will show the jdec standards that apply to that ram and the xmp profile. Then post the SS's to imageshack or the link and link them.

How can I configure ReFS to NOT fail read operations when a checksum error is detected (on non-Storage-Spaces volumes where data integrity streams are enabled)?

According to William Stanek, in his Windows Server 2012 R2 Inside Out: Configuration, Storage & Essentials book, this is apparently possible: (pg. 615 - here it is on Google Books: https://books.google.ca/books?id=0IyfBAAAQBAJ&pg=PT819&lpg=PT819&dq=read+operation )
Integrity can be enabled when the system is not running on Storage Spaces. When
integrity is enabled and ReFS detects a checksum mismatch, ReFS logs an event and
fails the read operation by default. If you don’t want the read operation to fail, you
can configure ReFS to continue with the read operation. A related event will be logged
regardless.
So then how do I configure it to do that???
(And just to make it super-clear, I'm NOT using Storage Spaces, so there is no redundancy via mirroring/parity, and I'm not expecting any file repair - just detection of corruption. It's just a basic volume formatted with ReFS and
with integrity streams enabled, via format E: /fs:ReFS /i:enabled
For those who want more details, here's the situation:
I try to perform a read operation on a file with corrupted data (purposely done for testing using a low-level disk editor), I get a the following error message:
And an event ID 133 from ReFSv1 gets logged in the System log:
Clicking "Try Again" just brings up the same message, and clicking "Skip" skips the operation entirely.
This is indeed the correct default behaviour.
What I want instead is for the read operation to be allowed to complete, with corrupt data and all, and ONLY for the event to be logged. And according to William Stanek, this is supposed to be configurable somewhere - and after hours of searching, I haven't
been able to find anything.

Hi Tommy,
>>How can I configure ReFS to NOT fail read operations when a checksum error is detected
We can use PowerShell command Set-FileIntegrity to configure this. The specific parameter for controlling this behavior is
-Enforce <Boolean>which indicates whether to enable blocking access to a file if integrity streams do not match the data.
Regarding this point, the following article can be referred to as reference.
Set-FileIntegrity
https://technet.microsoft.com/en-us/library/jj218351.aspx
Best regards,
Frank Shen
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

Could not validate SPNEGO token.java.lang.Exception: Checksum error.

Hello consultant:
We are trying configurated SSO usind SPNEGO module
We have a portal 7.0 ehp1 and Active Directory Microsoft versión 2003 native
we have followed the steps described in note Sap 1457499"Note 1457499 - SPNego add-on"
When we have logged with user Active Directory and we try access to portal we obtain following error:
Authorization check user error
We have Deploy the Web diagtool from SAP Note 1045019 on the J2EE server, run it and perform the
following steps:
1. Select "Component" = "security" and "Activity" = "all"
2. Click the "Go" button, followed by the "Add All" button
3. Select "Component" = "All" and in the "Search pattern" field write "com.sap.security.spnego"
4. Click the "Go" button, followed by the "Add All" button
5. Start the tool
Then we have reproduce the problem and stop the tool. The generated zip file will contain following error:
15:45:20:078 Error J2EE_GST_PRD SAPEngine_Application_Thread[impl:3]_15 ~p.security.spnego.krb5.crypto.DesCrypto Checksum error! checksum: 0xc46bfed8d0dbc54221ee75405c8cd5ac; calculated checksum: 0x6ead7e801608b729a6957597327f2ba5
15:45:20:078 Error J2EE_GST_PRD SAPEngine_Application_Thread[impl:3]_15 ~m.sap.security.spnego.SPNEGOLoginModule Could not validate SPNEGO token.
java.lang.Exception: Checksum error.
at com.sap.security.spnego.krb5.crypto.DesCrypto.decrypt(DesCrypto.java:43)
at com.sap.security.spnego.krb5.KrbEncryptedData.decrypt(KrbEncryptedData.java:81)
at com.sap.security.spnego.krb5.KrbApReq.decrypt(KrbApReq.java:67)
at com.sap.security.spnego.SPNEGOLoginModule.parseAndValidateSPNEGOToken(SPNEGOLoginModule.java:234)
at com.sap.security.spnego.SPNEGOLoginModule.processAuthorizationHeader(SPNEGOLoginModule.java:385)
at com.sap.security.spnego.SPNEGOLoginModule.login(SPNEGOLoginModule.java:102)
at com.sap.engine.services.security.login.LoginModuleLoggingWrapperImpl.login(LoginModuleLoggingWrapperImpl.java:185)
at com.sap.engine.services.security.login.ModulesProcessAction.run(ModulesProcessAction.java:70)
at java.security.AccessController.doPrivileged(AccessController.java:246)
at com.sap.engine.services.security.login.FastLoginContext.login(FastLoginContext.java:181)
at com.sap.engine.system.SystemLoginModule.login(SystemLoginModule.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:61)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60)
at java.lang.reflect.Method.invoke(Method.java:391)
at javax.security.auth.login.LoginContext.invoke(LoginContext.java:699)
at javax.security.auth.login.LoginContext.access$000(LoginContext.java:151)
at javax.security.auth.login.LoginContext$4.run(LoginContext.java:634)
at java.security.AccessController.doPrivileged(AccessController.java:246)
at javax.security.auth.login.LoginContext.invokeModule(LoginContext.java:631)
at javax.security.auth.login.LoginContext.login(LoginContext.java:557)
at com.sap.security.core.logon.imp.SAPJ2EEAuthenticator.logon(SAPJ2EEAuthenticator.java:912)
at com.sapportals.portal.prt.service.authenticationservice.AuthenticationService.login(AuthenticationService.java:367)
at com.sapportals.portal.prt.connection.UMHandler.handleUM(UMHandler.java:126)
at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:181)
at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:541)
at java.security.AccessController.doPrivileged(AccessController.java:246)
at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:430)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.runtime.RequestDispatcherImpl.doWork(RequestDispatcherImpl.java:321)
at com.sap.engine.services.servlets_jsp.server.runtime.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:377)
at com.sap.portal.navigation.Gateway.service(Gateway.java:126)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(AccessController.java:219)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:104)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:176)
Could you help us?
Many thanks for your collaboration

<< Do not post the same question across a number of forums >>

Apex 2.2.1- error in editing a report withIE 6: ORA-20001- Checksum error

Hi all,
I'am getting an Error when I try to edit a report with Internet Explorer 6: ORA-20001-...- Checksum error.
With Firefox it works fine.
Customer is using IE as standard browser and Firefox is not available here.
Any Ideas?
Kazim

I had to apply Patch 4554072, provided with APEX.
This patch is available in the directory patch\bug4554072.
Kazim

Copy files between pcs - checksum error

Scenario:
- Two PCs (A and B) in a small LAN.
- Computer A runs a NFS and a FTP server. I can transfer file from A to B mounting the nfs exported directories or downloading them via FTP.
- The files can reside in ext3 or xfs partitions, on different drives, in A and they are being copied to B in ext3 or xfs partitions, again on different drives.
- Drives and filesystems are healthy (knock on wood).
I download a given file along with its checksum file (md5 or sfv format), from internet on A: the checksum check using cfv (tried even md5sum) says it's allright.
Then I copy the file on B (via FTP or NFS - it doesn't matter), check it again and I have an error ("bad crc"). Sometimes for the file I download, there's a torrent: if I use the torrent file and check the integrity of the downloaded file (with ktorrent or gtorrentviewer), I find that there's a missing piece.
The above happens random, not always and not with all files.
A really strange thing is that, if I mount A's exported directory in B and if I run the checksum check from B, I also get an error (as said above, if I check the file directly on A, it's good).
I can't remember when this started - in your opinion, where should I look for solving this?

I dont really understand the torrent part of the story.
Sorry - I wasn't that much clear and my english doesn't help
A torrent file can be used for an integrity check of the file: not only it reports if the checksum is right or wrong, but - in this latter case - it can tell you that there are missing pieces in the file and how many.
Hmm and it sounds like pc B isnt that healthy
I checked for filesystem sanity in both PCs, and I also run the Seagate diagnostic tool on both of them. The chance that 4 hard disk are failing at the same time in the same PC is negligible. Anyway, I'm open to suggestions here - maybe it's an hardware issue, but I don't think it's related to the hard disks.
what if you try it with an usb stick ??
I'll try copying files to an external drive and to another PC - thanks for the idea
try to check the size of the file you copy if there are both equal.
They aren't - otherwise I won't get that checksum error. The difference is usually small, though - only a few kbytes: it seems to me that the copy process doesn't end properly.

DNS after reducing the advertised EDNS UDP packet size to 512 octets

hello
There is something wrong with my DNS server, it open internet webs so slow,and i have no idea with this .
04-Mar-2011 14:31:57.264 zone 0.0.127.in-addr.arpa/IN/com.apple.ServerAdmin.DNS.public: loaded serial 1997022700
04-Mar-2011 14:31:57.264 zone 15.0.168.192.in-addr.arpa/IN/com.apple.ServerAdmin.DNS.public: loaded serial 2011030204
04-Mar-2011 14:31:57.265 zone ******/IN/com.apple.ServerAdmin.DNS.public: loaded serial 2011030404
04-Mar-2011 14:31:57.265 zone localhost/IN/com.apple.ServerAdmin.DNS.public: loaded serial 42
04-Mar-2011 14:31:57.265 running
04-Mar-2011 14:32:00.066 host unreachable resolving 'b.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:7fd::1#53
04-Mar-2011 14:32:00.261 host unreachable resolving 'r.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:500:2f::f#53
04-Mar-2011 14:32:00.261 host unreachable resolving 'r.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:503:c27::2:30#53
04-Mar-2011 14:32:00.261 host unreachable resolving 'r.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:503:ba3e::2:30#53
04-Mar-2011 14:32:00.261 host unreachable resolving 'r.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:7fd::1#53
04-Mar-2011 14:32:00.261 host unreachable resolving 'r.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:dc3::35#53
04-Mar-2011 14:32:00.361 host unreachable resolving 'dr.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:500:1::803f:235#53
04-Mar-2011 14:32:00.361 host unreachable resolving 'dr.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:7fd::1#53
04-Mar-2011 14:32:00.361 host unreachable resolving 'dr.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:dc3::35#53
04-Mar-2011 14:32:00.361 host unreachable resolving 'dr.dns-sd.udp.0.0.168.192.in-addr.arpa/PTR/IN': 2001:503:ba3e::2:30#53
04-Mar-2011 14:32:00.866 host unreachable resolving './NS/IN': 2001:7fd::1#53
04-Mar-2011 14:32:01.005 success resolving './NS' (in '.'?) after reducing the advertised EDNS UDP packet size to 512 octets
04-Mar-2011 14:32:01.408 success resolving 'local/SOA' (in '.'?) after disabling EDNS
04-Mar-2011 14:32:01.533 host unreachable resolving 't.arin.net/AAAA/IN': 2001:503:ba3e::2:30#53
04-Mar-2011 14:32:01.534 host unreachable resolving 'v.arin.net/AAAA/IN': 2001:500:1::803f:235#53
04-Mar-2011 14:32:01.534 host unreachable resolving 'v.arin.net/AAAA/IN': 2001:7fd::1#53
04-Mar-2011 14:32:01.534 host unreachable resolving 'v.arin.net/AAAA/IN': 2001:503:ba3e::2:30#53
04-Mar-2011 14:32:01.534 host unreachable resolving 'w.arin.net/A/IN': 2001:500:1::803f:235#53
anyone help!! Thanks a lot.
Message was edited by: leo.xue

also interesting, when setting DNS servers IPs in Network Settings for your host,
it is important that the IPs are not doubled.
in example if you have Networksettings like
automatic DHCP given from router or server.
IP-Adress: 192.168.2.2
Subnetmask: 255.255.255.0
Router IP: 192.168.2.1
DNS-Server: 127.0.0.1, 192.168.2.2
wich means localhost and again same machine, just different IP..
then your lookup mechanism has to walk thru this steps to know if there is nothing inside to resolve adresses.
which means in this example it would take double the time if DNS-Server would be just 127.0.0.1
you can see if there is a lot to work thru in your logs.
look for something like "sizing zone task pool based on 9 zones".
this mount of zones will change if you set the correct DNS server IP.
more zones are slower than less, very logical!
but this will not solve your problem with packet size at all, it just reduces circles after dns resolves not known adresses even with packet size change.

Solaris 10 express developer ed. dvd checksum error

Hi,
I downloaded the solaris 10 express developer ed. dvd. I used Sun Download manager for the download. the file e had checksum error. Hence the DVD contains checksum error. Is there any way we could correct the download without the need re-download the entire file. Other files ending a,b,c,e dont have this problem. Am i the only one getting this problem or is it a known issue?
with regards,
ashwin

Sorry there is no real way to solve this other than downloading the last segment of the file.

Checksum error in Manual Tabular Form

Hi everyone,
I have created 2 (manual tabular forms) on a same page but i am getting checksum error for one of the tabular form.
Here is my code:
1 st Tabular Form:
select
x.del,
x.ECGEXST_ID,
x.LEAD_CD,
x.ST_ID,
x.ENTERED_DTS,
X.ENTERED_BY_NM,
X.UPDATED_DTS,
X.UPDATED_BY_NM,
x.cks
from (
select
htmldb_item.checkbox(1,ECGEXST_ID) del,
htmldb_item.hidden(2,ECGEXST_ID) ECGEXST_ID,
htmldb_item.select_list_from_query (3, LEAD_CD,'select lead_cd , lead_cd from lslead order by display_seq ',15) LEAD_CD,
htmldb_item.select_list_from_query(5,ST_ID,'select lkup_dsc,lkup_id from lkup where lkup_grp_id = 17',25) ST_ID,
wwv_flow_item.display_and_save(6,to_char(ENTERED_DTS,'MM/DD/YYYY')) ENTERED_DTS,
au.LAST_NM || ', ' || au.FIRST_NM ENTERED_BY_NM,
wwv_flow_item.display_and_save(7,to_char(UPDATED_DTS,'MM/DD/YYYY')) UPDATED_DTS,
au1.LAST_NM || ', ' || au1.FIRST_NM UPDATED_BY_NM,
htmldb_item.md5_checksum(ECGEXDT_ID,LEAD_CD,ST_ID,ENTERED_DTS,ENTERED_BY_MSPR_ID) cks
from ECGEXST,
app_user au,app_user au1 where au.MSPR_ID(+) = ECGEXST.ENTERED_BY_MSPR_ID and au1.MSPR_ID(+) = ECGEXST.UPDATED_BY_MSPR_ID
and ECGEXDT_ID = :P65_ECGEXDT_ID
union all
select
htmldb_item.checkbox(1,null) del,
htmldb_item.hidden(2,null) ECGEXST_ID,
htmldb_item.select_list_from_query (3,null,'select lead_cd , lead_cd from lslead order by display_seq ',15) LEAD_CD,
htmldb_item.select_list_from_query(5,null,'select lkup_dsc,lkup_id from lkup where lkup_grp_id = 17',25) ST_ID,
wwv_flow_item.display_and_save(6,null) ENTERED_DTS,
null ENTERED_BY_NM,
wwv_flow_item.display_and_save(7,null) UPDATED_DTS,
null UPDATED_BY_NM,
htmldb_item.md5_checksum(null,null,null,null,null) cks
from dual) x
UPDATE PROCESS:
declare
l_cks wwv_flow_global.vc_arr2;
j pls_integer := 1;
val1 varchar2(100);
val2 varchar2(100);
begin
-- Get original MD5 checksum
select wwv_flow_item.md5(ECGEXDT_ID,LEAD_CD,ST_ID,ENTERED_DTS,ENTERED_BY_MSPR_ID) cks
BULK COLLECT INTO
l_cks
from ECGEXST where ECGEXDT_ID = :P65_ECGEXDT_ID;
-- Compare the original checksum, l_cks,
-- with submitted checksum, htmldb_application.g_fcs.
-- If they are different, raise an error.
for i in 1..l_cks.count
loop
if htmldb_application.g_fcs(i) != l_cks(i) then
rollback;
raise_application_error(
          -20001,
     'Current version of data in database has changed '||
          'since user initiated update process.');
-- return;
end if;
end loop;
-- update ECGRSTST
for i in 1..htmldb_application.g_f02.count
loop
if htmldb_application.g_f02(i) is not null then
update ECGEXST
set
ECGEXDT_ID = :P65_ECGEXDT_ID,
LEAD_CD = replace(htmldb_application.g_f03(i),'%'||'null%',NULL),
ST_ID = replace(htmldb_application.g_f05(i),'%'||'null%',NULL)
where ECGEXST_ID = htmldb_application.g_f02(i);
else
if htmldb_application.g_f03(i) is not null then
insert into ECGEXST
(ECGEXST_ID ,
ECGEXDT_ID,
LEAD_CD,
ST_ID)
values
(ECGEXST_SEQ.nextval,
:P65_ECGEXDT_ID,
replace(htmldb_application.g_f03(i),'%'||'null%',NULL),
replace(htmldb_application.g_f05(i),'%'||'null%',NULL));
end if;
end if;
end loop;
end;
The first tabular form is working fine.But for the second tabular form i am getting the checksum error.I have created a test table and checked the checksum values.The checksum values are changing.
Here is the code of my 2nd tabularform:
select
x.del,
x.ECGEXT_ID,
x.LEAD_CD,
x.T_ID,
x.ENTERED_DTS,
X.ENTERED_BY_NM,
X.UPDATED_DTS,
X.UPDATED_BY_NM,
x.cks
from (
select
htmldb_item.checkbox(11,ECGEXT_ID) del,
htmldb_item.hidden(12,ECGEXT_ID) ECGEXT_ID,
htmldb_item.select_list_from_query (13, LEAD_CD,'select lead_cd , lead_cd from lslead order by display_seq ',15) LEAD_CD,
htmldb_item.select_list_from_query(15,T_ID,'select lkup_dsc,lkup_id from lkup where lkup_grp_id = 18',25) T_ID,
wwv_flow_item.display_and_save(16,to_char(ENTERED_DTS,'MM/DD/YYYY')) ENTERED_DTS,
au.LAST_NM || ', ' || au.FIRST_NM ENTERED_BY_NM,
wwv_flow_item.display_and_save(17,to_char(UPDATED_DTS,'MM/DD/YYYY')) UPDATED_DTS,
au1.LAST_NM || ', ' || au1.FIRST_NM UPDATED_BY_NM,
htmldb_item.md5_checksum(ECGEXDT_ID,LEAD_CD,T_ID,ENTERED_DTS,ENTERED_BY_MSPR_ID) cks
from ECGEXT,
app_user au,app_user au1 where au.MSPR_ID(+) = ECGEXT.ENTERED_BY_MSPR_ID and au1.MSPR_ID(+) = ECGEXT.UPDATED_BY_MSPR_ID
and ECGEXDT_ID = :P65_ECGEXDT_ID
union all
select
htmldb_item.checkbox(11,null) del,
htmldb_item.hidden(12,null) ECGEXT_ID,
htmldb_item.select_list_from_query (13,null,'select lead_cd , lead_cd from lslead order by display_seq ',15) LEAD_CD,
htmldb_item.select_list_from_query(15,null,'select lkup_dsc,lkup_id from lkup where lkup_grp_id = 18',25) T_ID,
wwv_flow_item.display_and_save(16,null) ENTERED_DTS,
null ENTERED_BY_NM,
wwv_flow_item.display_and_save(17,null) UPDATED_DTS,
null UPDATED_BY_NM,
htmldb_item.md5_checksum(null,null,null,null,null) cks
from dual) x
UPDATE PROCESS:
declare
l_cks wwv_flow_global.vc_arr2;
j pls_integer := 1;
val1 varchar2(100);
val2 varchar2(100);
begin
-- Get original MD5 checksum
select wwv_flow_item.md5(ECGEXDT_ID,LEAD_CD,T_ID,ENTERED_DTS,ENTERED_BY_MSPR_ID) cks
BULK COLLECT INTO l_cks
from ECGEXT where ECGEXDT_ID = :P65_ECGEXDT_ID;
-- Compare the original checksum, l_cks,
-- with submitted checksum, htmldb_application.g_fcs.
-- If they are different, raise an error.
for i in 1..l_cks.count
loop
if htmldb_application.g_fcs(i) != l_cks(i) then
-- val1 := htmldb_application.g_fcs(i);
-- val2 := l_cks(i);
-- insert into test2 (val_1,val_2) values (val1,val2);
rollback;
raise_application_error(
     -20001,
     'Current version of data in database has changed '||
     'since user initiated update process.');
return;
end if;
end loop;
-- update ECGRSTST
for i in 1..htmldb_application.g_f12.count
loop
if htmldb_application.g_f12(i) is not null then
update ECGEXT
set
ECGEXDT_ID = :P65_ECGEXDT_ID,
LEAD_CD = replace(htmldb_application.g_f13(i),'%'||'null%',NULL),
T_ID = replace(htmldb_application.g_f15(i),'%'||'null%',NULL)
where ECGEXT_ID = htmldb_application.g_f12(i);
else
if htmldb_application.g_f13(i) is not null then
insert into ECGEXT
(ECGEXT_ID ,
ECGEXDT_ID,
LEAD_CD,
T_ID)
values
(ECGEXT_SEQ.nextval,
:P65_ECGEXDT_ID,
replace(htmldb_application.g_f13(i),'%'||'null%',NULL),
replace(htmldb_application.g_f15(i),'%'||'null%',NULL));
end if;
end if;
end loop;
end;
please help me in solving this.The same code its good for one tabular form and for the other it giving the checksum error.
Thanks in advance
phani

Hi patrick,
Thanks for the reply i am getting the checksum error even if i used my primary key in the select statement of the MD5 checksum.
My primary key in the second tabular form is
htmldb_item.hidden(12,ECGEXT_ID) ECGEXT_ID
so i changed the process to:
for i in 1..htmldb_application.g_f12.count
loop
if htmldb_application.g_f12(i) is not null
then
select wwv_flow_item.md5(ECGEXDT_ID,LEAD_CD,T_ID,ENTERED_DTS,ENTERED_BY_MSPR_ID) cks
BULK COLLECT INTO l_cks
from ECGEXT where ECGEXT_ID = htmldb_application.g_f12(i);
-- Compare the original checksum, l_cks,
-- with submitted checksum, htmldb_application.g_fcs.
-- If they are different, raise an error.
if htmldb_application.g_fcs(i) != l_cks(i) then
-- val1 := htmldb_application.g_fcs(i);
-- val2 := l_cks(i);
-- insert into test2 (val_1,val_2) values (val1,val2);
rollback;
raise_application_error(
     -20001,
     'Current version of data in database has changed '||
     'since user initiated update process.');
end if;
end if;
end loop;
It's not possible to use BULK COLLECT to get the MD5 checksum of all >>>rows. Because the index positions in the MD5 array and the >>>apex_application.g_fxx array index will probably not match, especially if you >>>don't order or if you are on a second page.How come the first tabular form is running i used the bulk collect in the first tabular form
HERE IS THE CODE FOR THE FIRST TABULAR FORM:
-- Get original MD5 checksum
select wwv_flow_item.md5(ECGEXDT_ID,LEAD_CD,ST_ID,ENTERED_DTS,ENTERED_BY_MSPR_ID) cks
BULK COLLECT INTO
l_cks
from ECGEXST where ECGEXDT_ID = :P65_ECGEXDT_ID;
-- Compare the original checksum, l_cks,
-- with submitted checksum, htmldb_application.g_fcs.
-- If they are different, raise an error.
for i in 1..l_cks.count
loop
if htmldb_application.g_fcs(i) != l_cks(i) then
rollback;
raise_application_error(
          -20001,
     'Current version of data in database has changed '||
     'since user initiated update process.');
-- return;
end if;
end loop;

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