Similar Questions

• Measurement error of the County of edge by using the external sample clock

  Hello

  I'm trying to measure the number of edges (rising) on a square wave at 5 kHz with a generator function on a device of the NI PCIe-6363. I configured a channel of County of front edge of counter at the entrance of the PFI8 device. I use an external sample clock that is provided by the output of the meter of a NI USB-6211 housing channel. If I acquire for 10secs then ideally I would expect to see a total of 50000 edges measured on the meter inlet channel. However, my reading is anywhere between 49900 and 50000.

  When I use the internal clock of time base to measure the edges, the measure is accurate and almost always exactly 50000. I understand that when you use the external sample clock, the precision of the measurements is subject to noise level of the clock signal. However, I checked the clock signal is stable and not very noisy. Any reason why there is an error of measurement and how tolerance should I expect when using an external sample clock compared to when you use the internal time base clock?

  Also, what is best clock Frequency (with respect to the frequency of the input signal) when using an external clock?

  Thank you

  Noblet

  Hi all

  Thanks for all your sugggestions. I was using an input signal with a function generator which had a range of 8V. It turns out that the reduction of the amplitude to 5V solves the problem. I was able to get accurate numbers with the 6211 external clock.

  Thank you

  Noblet

• Period measurement error 20308

  I'm trying to measure the period of a very slow rate (Hz 0,083) to come to my DAQ (6009).

  However, it comes with "error-20309 occurred at the" NI_MAPro.lvlibulse measures 1 chan.vi:2 "when it is called of" NI_MAPro.lvlibulse measures N chan.vi:1 "(waveform index 0 1)". "

  DQA captures method is set on "on demand" however I also tried various (frequency + buffer) such as 10 k by 2 k.

  but it always comes up with the error.

  I know why it comes up with this error but do not know how to fix it.

  I have attached the vi (the signal to simulate reply my DAQ)

  Because you'll probably want at least 2 cycles whole to your measurements, and each cycle lasts approximately 12 seconds, I would get 25 seconds of data at 50 Hz (1250 samples)

• Measurement error Freuqency

  Hello.

  I have a VI whose frequency records 4 channels for a NI9411 and generates a string of adjustment 0 - 5V. It works fine apart from when there is no siganl current frequency.

  When my rig is first turned on there is no current frequency signal and after about 10 seconds, I get the attached message.

  Is it possible to modify the Vi (attached) so I do not get this error in the future? I can't guarantee that it will always be a frequency signal.

  You can set the timeout to-1 in this way he'll wait forever.

• measurement error filename file

  Hello.

  In my project, I used the function to read the file can read the .tdms file. When I run the program on another folder or on another PC, and then select the name of the open file, an error occurred, error window appears. Although there is no bad program operation, but it is very uncomfortable. So I hope how this error window does not appear?
  Thank you.

  Your default path is "C:\Documents and Settings\user\Desktop\Save file\test.lvm".  If you are on a Windows 7 computer, this folder does not exist.  It is now "C:\Users\user\Desktop\Save file\test.lvm" (assuming you want this file to the desktop).  As the search begins in the record of the value of current path, you get the error.  Change your default path to something that is valid.

• hp450c media in an attempt to feel measured error

  I get a media error light when I press the 'leap' and the 'Reprint' button to print a calibration page.

  DesignJet 450 c

  Win XP

  Media error

  Thanks for the comments.

  However, I need not post the question because I came across the answer. I found it by trial and error that I needed to use the largest sheet size E. When I tried 8-1/2 X 11 and 48 inch rolled media I got a flashing of media.

  I'll try better in the future to post in the right group.

  Jerry Clasby

• Can we average channel error using multiple channels to measure the same voltage?

  I don't know how correlated error terms are between measuring channels max, but it occurred to me that, if they were relatively independent, I might be able to sample the signal even with several channels and increase accuracy.

  For example, rather than measure a voltage with an AI only at 100 kHz, I could connect up to 10 different lines to HAVE the signal, sample to 10 kHz on each line.  This should allow to reach me on average some of the error associated with each channel (, or so I think).

  Can someone speak definitively to this?

  Thank you

  Sean

  Well, if you are using a MULTIPLEXED Board (everything is not specced for simultaneous sampling) then each channel is connected to the ADC even one after the other, best that you would be able to do is extremely, extremely small variations into the paths of each channel of the multiplexer.  This would still be massively overshadowed by the inherent noise from the system and the accuracy of the device.

  Your best bets to reduce the measurement error is to oversample in one way to reduce the effects of noise and to calibrate the unit before starting each test to keep variations of temperature.  In addition, make sure you keep your calibrated Board (most of the boards have a calibration 1 year of the cycle).

  For some applications, you should also consult wiring field and considerations of noise for analog signals, How to eliminate ghosting of my measurements? and Troubleshooting unexpected tensions, floating or crosstalk on Analog Input Channels to better account for ghosting and the issues of the hour.

• High speed continuous measurement of encoder with sampling frequency of 1 kHz

  I am able at all times the position of a linear encoder using a PCI-6602 counter card, and I need to know how to set up so that the counter rotating at high speed, but the data is inserted into the buffer at a frequency of 1 kHz.  I am able suddenly to a hydraulic cylinder, and I am not concerned about the event recording to high frequency except to the extent where they throw off the number considerably if the equipment does not run fast enough to detect all the impulses of the encoder.

  Now, I think is that the external sample clock signal control (routed internal pulse output counter) time rate whereby the equipment detects the impulses of the encoder and the rate at which it inserts data into the buffer.  With a pulse 100 per inch encoder and a sampling frequency of 1 kHz, the extended final position of the cylinder is turned off by +/-0.15 inches, which is unacceptable.

  I need calculate a speed of this information, so I prefer not to use software timed sampling to control this (it's more difficult programming for other reasons as well - several asynchronous measures).  Any ideas on how to configure the hardware to count faster than the speed at which she inserts counties in the buffer?

  OK, you're clearly on the right track here, so I will focus on some details.

  1. How do you know that the +/-0.15 "differences are * measurement error rather than * error of movement?  Why wouldn't be an accurate measure and a proposal which can vary slightly from the nominal value?

  2. I wonder some all electric noise and defects that may produce false edges.  The fact that the behavior was better by using a sampling rate limited (200 kHz) in the digital inputs may be that some of these flaws were so short that they were never captured.

  I did a ton of work with the Commission to 6602 encoder and I can certainly confirm that count equipment is sensitive to the edges in a few tens of MHz.  (I know its 80 MHz for edge counting, but I think I remember that it can be of the order of 20 to 40 MHz to accommodate the time of signal propagation extra of the quadrature decoding circuit).

  A small point of clarification.  You're talking about the speed at which the meter "works to.  The value of count is a register whose value is changed completely by the circuit, * independent * of the sampling frequency.  If you enjoy with material-clocked County in memory buffer or interrogation of software without buffer not a bit for circuits that increments / decrements the value of the counter register.  (In other words, I am completely convinced that you would get commensurate with position end even if you took only 1 sample software-polled after the end of the move instead of sampling at 1 kHz all the way through.)

  So, if the value of the counter is disabled, it is because the circuit detects producers of County of the edges that shouldn't be there.  Something you can try is to set up digital debounce filter for input lines of the PFI corresponding to the encoder Source inputs and to the.

  -Kevin P.

• Notifier release outside of the loop of consumption

  Hi all

  I use a notifier to a stop button.  My stop button was not stop in one of the cases (1 error to wait on the notice in hand MTTF.vi).  I've highlighted the code and noticed that when I pressed stop, the notifier has been released prior to notifying the consumption loop.  When I published the notifier outside the loop of consumption, my error has disappeared.

  Looks like a simple fix which is awesome, but ine everything I've read or seen so far, that the release was out of the loop of producer.  Is there a drawback to doing it this way?

  A more common way to deal with this should treat a mistake to wait on notice as a stop condition, because the error indicates that the notifier has been released, and the only way that can happen is that the loop of the producer ended.

  The way you described, you could get in a situation where the producer loop stops but the consumer does not and since the Notifier is not released until the consumer left, the loop of the consumer will never stop because he always waits for a notification that will never come (but the declarant is still valid, if it continues to wait).

• Analog inputs measures with NI6229 using the DAQmx driver

  Hello

  I have four different analog inputs connected to ai0 to HW 6220 ai3. I read these values with a single task, all 4 channels assigned to this task. When ai0 reads 7V, I see 0.8 V ai1 too, but I expect to be measured 0V. If I just assign ai1 to the task and measure all 4 channels, then I measured 0V as expected (although ai1 contains 7V, I just don't measure it).

  Another comment 'funny', is that if I change the order in which I add channels to the task, measurement errors are different.

  However, when measured with a multimeter 4-channel show tensions as expected.

  Given that my calling task is can not block, I call the function

  DAQmxReadAnalogF64 with timeout = 0 and numSampsPerChan = 1.

  Any help is appreciated.

  Thank you

  Kind regards

  Deepa

  Deepa,

  Thanks for the code snippet.

  When you call DAQmxReadAnalogF64 the first time and you set a value of timeout of 0, there is a chance that the acquisition is not yet initialized. This is the expected behavior and should not be a problem. If the timeout error died at the first call, you might ignore it or set a different expiration time for the first call only. In all cases, you should drop the first value and start with the second value.

  Jochen

• Compose a new VAPP via vCloud SDK

  I want to compose a new VAPP via vCloud SDK, but I got an error like below: can someone help me?

  April 9, 2015 13:56:53 com.vmware.vcloud.sdk.RestUtil post

  INFO: POST URL - https://vcdhttp/API/Admin/VDC/3bdc1c1b-DC30-479b-9ad8-071ee39a41cf/action/composeVApp

  April 9, 2015 13:56:53 com.vmware.vcloud.sdk.RestUtil post

  NEWS: POST Request Body - <? XML version = "1.0" encoding = "UTF-8" standalone = "yes"? >

  " < ns6:ComposeVAppParams name ="NewTestvAPP"xmlns =" http://www.VMware.com/vCloud/versions "xmlns:ns6 =" http://www.VMware.com/vCloud/v1.5 "xmlns:ns5 =" http://schemas.dmtf.org/wbem/wscim/1/CIM-Schema/2/CIM_ResourceAllocationSettingData "xmlns:ns8 =" http://schemas.dmtf.org/OVF/Environment/1 "xmlns:ns7 =" http://www.VMware.com/Schema/OVF "xmlns:ns9 =" http://www.VMware.com/vCloud/extension/v1.5 "xmlns:ns2 =" http://schemas.dmtf.org/OVF/Envelope/1 "xmlns:ns4 =" http://schemas.dmtf.org/wbem/wscim/1/CIM-Schema/2/CIM_VirtualSystemSettingData "xmlns:ns3 =" http://schemas.dmtf.org/wbem/wscim/1/Common "> " "" "" ""

  " < href = ns6:VAppParent ' https://vcdhttp/API/Admin/VDC/3bdc1c1b-DC30-479b-9ad8-071ee39a41cf "name ="OrgVDC"type="application/vnd.vmware.admin.vdc+xml"/ > "

  < ns6:InstantiationParams >

  < LeaseSettingsSection ns2: required = "false" xmlns = "" xmlns:ns10 =" " http://www.VMware.com/vCloud/versions "> "

  < ns2:Info > lease settings < / ns2:Info >

  < ns6:Link rel = "├editer" / >

  < ns6:DeploymentLeaseInSeconds > 604800 < / ns6:DeploymentLeaseInSeconds >

  < ns6:StorageLeaseInSeconds > 2592000 < / ns6:StorageLeaseInSeconds >

  < ns6:StorageLeaseExpiration > 2015 - T 03-05-08: 32:16.473 + 00:04 < / ns6:StorageLeaseExpiration >

  < / LeaseSettingsSection >

  < / ns6:InstantiationParams >

  < ns6:AllEULAsAccepted > true < / ns6:AllEULAsAccepted >

  < / ns6:ComposeVAppParams >

  April 9, 2015 13:56:53 com.vmware.vcloud.sdk.RestUtil post

  INFO: POST Content Type application - application/vnd.vmware.vcloud.composeVAppParams+xml

  April 9, 2015 13:56:54 com.vmware.vcloud.sdk.RestUtil post

  INFO: Status - 404 Code

  April 9, 2015 13:56:54 com.vmware.vcloud.sdk.RestUtil post

  INFO: Status - not found

  April 9, 2015 13:56:54 com.vmware.vcloud.sdk.RestUtil post

  INFO: Request Id - X VMWARE VCLOUD REQUEST ID: 8f573dd9-7579-4520-8c95-038f00d934fe

  April 9, 2015 13:56:54 com.vmware.vcloud.sdk.RestUtil post

  INFO: Response - <? XML version = "1.0" encoding = "UTF-8"? >

  " < error xmlns =" http://www.VMware.com/vCloud/v1.5 "majorErrorCode ="404"message ="Resource not found"minorErrorCode ="RESOURCE_NOT_FOUND"stackTrace =" javax.ws.rs.ClientErrorException

  You are using an incorrect url. According to your info POST request you run against the "/ api/admin/vdc...» "url:

  NEWS: POST URL - https://vcdhttp/api/admin/vdc/3bdc1c1b-dc30-479b-9ad8-071ee39a41cf/action/composeVApp

  However, it should be "/ api/vdc /...» "(VMware vCloud Director 5.6 Documentation Centre)

• commissioning a vCO error vCAC machine.

  I am trying to run the workflow "Request a catalog article" library/vCloud Automation Center/queries and it errors with the following error:

  ch.dunes.vso.sdk.api.IUserToken.getPrincipalKey () Ljava/lang/String; (Name of the dynamic Script Module: requestCatalogItem #13)

  Line 13 of the requestCatalogItem action is as follows:

  var request = vCACCAFERequestsHelper.requestCatalogItem (item, form);

  I have reproduced the action and equip the code to verify that article so are of the correct type and they are.  I also tried to run the requestCatalogItemOnBehalfOf action and get the same error.

  My vCO is 5.5.2 and the Plugin version 6.1.0 vCAC.

  Any help is greatly appreciate.

  -Luke

  Hi Luke,.

  I suppose that you add the vCAC host using authentication "by the Session of the user. We have already solved the problem, but we did not have a technical overview to date.

  Please try with this Version of technical overview of VMware vCenter Orchestrator plug-in for vCloud Automation Center 6.1.1

  I hope this will fix the problem.

  Best regards

  Georgi

• vCloud Director 5.5.1 can prepare the host

  Hello!
  My environment: vCloud Director 5.5.1.1654672

  ESXi 5.1.0 1065491

  vCenter 5.5.0 1623101

  
  I want to prepare a new host in our vCloud cluster, but I only had errors:

  "host cannot be prepaired":

  com.vmware.ssdc.util.LMException: com.vmware.ssdc.library.vim.SvcConnectionException:

  com.vmware.ssdc.util.LMException: com.vmware.ssdc.library.vim.SvcConnectionException:

  com.vmware.ssdc.library.vim.SvcConnectionException:

  com.vmware.ssdc.library.vim.SvcConnectionException

  all with the error "unable to connect to vcenter Server.

  org.apache.http.conn.HttpHostConnectException: connection to https://vcloudserver refused

  -Connection to https://vcloudserver refused

  -Connection has expired

  I checked the dns resolution (all directions, network connectivity (ping, telnet,...), vshield status etc...)

  I found the Thread problem preparing hosts , but is not a solution for me.

  Anyone have any idea?

  THX

  BR

  I solved my problem - it was a firewall issue.

  vCloud Director coud not connect to the esxi host because ports were blocked.

• Error connecting to vCenter Server

  After that a sudden loss of power I got the following error trying to connect to vcenter server:

  Internal server error

  2013-05-15 17:47:44, 772 | DEBUG | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). JobManager | Add the activity log: JOB_VC_START
  _CONNECTION > < cloudvcs0(com.vmware.vcloud.entity.vimserver:23b4fe43-1f29-4c6f-adc1-1048b2a8845c) > |
  2013-05-15 17:47:44, 773 | DEBUG | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). CJob                           | updateFailedJob (com.vmware.vcloud.ap
  i.presentation.service.InternalServerErrorException) with locale = null |
  com.vmware.vcloud.api.presentation.service.InternalServerErrorException: internal server error
  at com.vmware.vcloud.vimproxy.internal.impl.VcUpdateListenerImpl.onOuterLoopBreakWithException(VcUpdateListenerImpl.java:721)
  at com.vmware.vcloud.vimproxy.internal.impl.VcUpdateListenerImpl.outerWaitForUpdatesLoop(VcUpdateListenerImpl.java:633)
  at com.vmware.vcloud.vimproxy.internal.impl.VcUpdateListenerImpl.run(VcUpdateListenerImpl.java:343)
  Caused by: org.hibernate.exception.GenericJDBCException: could not execute the query
  at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126)
  at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114)
  at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
  at org.hibernate.loader.Loader.doList(Loader.java:2231)
  at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2125)
  at org.hibernate.loader.Loader.list(Loader.java:2120)
  at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:118)
  at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1596)
  at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306)
  at com.vmware.vcloud.inventory.cache.PropertyMapDao.validateOrGet(PropertyMapDao.java:336)
  at com.vmware.vcloud.inventory.cache.PropertyMapDao.bulkValidateOrGet(PropertyMapDao.java:321)
  at com.vmware.vcloud.inventory.cache.PropertyMapDao.bulkValidateAndGetNewer(PropertyMapDao.java:267)
  at com.vmware.vcloud.inventory.cache.InventoryCacheManagerImpl.bulkGetInternal(InventoryCacheManagerImpl.java:418)
  at com.vmware.vcloud.inventory.cache.InventoryCacheManagerImpl.bulkGet(InventoryCacheManagerImpl.java:549)
  at com.vmware.vcloud.inventory.impl.InventoryServiceImpl.processUpdateSet(InventoryServiceImpl.java:931)
  to com.vmware.vcloud.inventory.impl.InventoryServiceImpl.access$ 300 (InventoryServiceImpl.java:145)
  to com.vmware.vcloud.inventory.impl.InventoryServiceImpl$ 5.run(InventoryServiceImpl.java:860)
  to com.vmware.vcloud.inventory.impl.InventoryServiceImpl$ 5.run(InventoryServiceImpl.java:826)
  at com.vmware.vcloud.common.persist.ConversationContextExecutor.execute(ConversationContextExecutor.java:46)
  at com.vmware.vcloud.inventory.impl.InventoryServiceImpl.processAndBatchUpdates(InventoryServiceImpl.java:826)
  at com.vmware.vcloud.inventory.impl.InventoryServiceImpl.handleUpdate(InventoryServiceImpl.java:799)
  at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke (unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke (unknown Source)
  at java.lang.reflect.Method.invoke (unknown Source)
  at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
  at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
  at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
  to $Proxy187.handleUpdate (Unknown Source)
  at com.vmware.vcloud.vimproxy.internal.impl.VcUpdateListenerImpl.dispatchUpdates(VcUpdateListenerImpl.java:1080)
  at com.vmware.vcloud.vimproxy.internal.impl.VcUpdateListenerImpl.innerWaitForUpdatesLoop(VcUpdateListenerImpl.java:925)
  at com.vmware.vcloud.vimproxy.internal.impl.VcUpdateListenerImpl.outerWaitForUpdatesLoop(VcUpdateListenerImpl.java:594)
  ... 1 more
  Caused by: java.sql.SQLException: ORA-01555: snapshot too old: rollback segment number with the name "" too small
  ORA-22924: snapshot too old

  at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:439)
  at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:388)
  at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:381)
  at oracle.jdbc.driver.T4C8TTILob.processError(T4C8TTILob.java:789)
  at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:436)
  at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:186)
  at oracle.jdbc.driver.T4C8TTILob.read(T4C8TTILob.java:146)
  at oracle.jdbc.driver.T4CConnection.getBytes(T4CConnection.java:2313)
  at oracle.sql.BLOB.getBytes(BLOB.java:319)
  at oracle.sql.BLOB.getBytes(BLOB.java:209)
  at oracle.jdbc.driver.T4CBlobAccessor.getBytes(T4CBlobAccessor.java:464)
  at oracle.jdbc.driver.OracleResultSetImpl.getBytes(OracleResultSetImpl.java:676)
  at oracle.jdbc.driver.OracleResultSet.getBytes(OracleResultSet.java:398)
  at org.hibernate.type.AbstractBynaryType.get(AbstractBynaryType.java:101)
  at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:184)
  at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:173)
  at org.hibernate.type.AbstractType.hydrate(AbstractType.java:105)
  at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2124)
  at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1404)
  at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1332)
  at org.hibernate.loader.Loader.getRow(Loader.java:1230)
  at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:603)
  at org.hibernate.loader.Loader.doQuery(Loader.java:724)
  at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
  at org.hibernate.loader.Loader.doList(Loader.java:2228)
  ... 32 more
  2013-05-15 17:47:44, 774. DEBUG | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). JobString | Object - object: cloudvcs0 (com.
  name of the VMware.vCloud.Entity.vimserver:23b4fe43-1f29-4c6f-adc1-1048b2a8845c operation): JOB_VC_START_CONNECTION |
  2013-05-15 17:47:44, 842. DEBUG | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). CJob                           | Not the last pending work: [cloudvcs0 (c
  OM. (VMware.vCloud.Entity.vimserver:23b4fe43-1f29-4c6f-adc1-1048b2a8845c)], status [3] = |
  2013-05-15 17:47:44, 846. DEBUG | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). CJob                           | Last jobs update: [cloudvcs0 (c
  OM. (VMware.vCloud.Entity.vimserver:23b4fe43-1f29-4c6f-adc1-1048b2a8845c)], status = [3], [15/05/13 17:47] |
  2013-05-15 17:47:44: 964 | DEBUG | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). ValidationServiceImpl | Jump queuing of the validator for co
  validator of m.vmware.ssdc.backend.valeventhandler.ProviderVdcVALStateValidator since it is a duplicate, current validation queue length: 1 |
  2013-05-15 17:47:44, 966 | INFO | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). InventoryServiceImpl | Reception earphone stopped for VC 23 b
  4fe43-1f29-4c6f-adc1-1048b2a8845c |
  2013-05-15 17:47:44, 966 | WARN | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). InventoryRecordPurger | Records of the inventory for 23b4fe4 trap
  3 1f29-4c6f-adc1-1048b2a8845c is not active.
  2013-05-15 17:47:44, 968 | INFO | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). VcUpdateListenerImpl | Releasing the proxy property of VC
  23b4fe43-1f29-4C6F-ADC1-1048b2a8845c |
  2013-05-15 17:47:44, 968 | INFO | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). VcUpdateListenerImpl | trying to clear the instance of cell id on
  VC 23b4fe43-1f29-4c6f-adc1-1048b2a8845c (current number of retries to 0). |
  2013-05-15 17:47:44, 969 | INFO | 23b4fe43-1f29-4c6f-adc1-1048b2a8845cListener (260). VcUpdateListenerImpl | 23b4fe43-1f29-4c6f-adc1-1048b2a88 VC
  45 c: attempt to set the instance id of cells from 70 to 0.

  Caused by: java.sql.SQLException: ORA-01555: snapshot too old: rollback segment number with the name "" too small

  ORA-22924: snapshot too old

  I found these two articles in the KB:

  VMware KB: The vCloud Director Web UI reports the error: ORA-01555: snapshot too old: rollback number with n segment...

  VMware KB: Make sure that you have adequate undo tablespace before upgrading a vCloud Director Oracle database

  I added more space for the undo tablespace, new redologs, also change the setting of retention for all LOB in the vCloud regime without a different result.

  Anyone have any idea on this?

  Best regards

  I finally had an answer for the Oracle error.

  I did a full export of the vcloud database and detect an error in this table:

  ORA-31693: Table object "VCLOUD" data "" PROPERTY_MAP "impossible to load/unload and being ignored because of the error:

  ORA-02354: Error exporting/importing data

  ORA-01555: snapshot too old: rollback segment number with the name "" too small

  ORA-22924: snapshot too old

  This OPINION score details this condition:

  Export fails with ORA-2354 ORA ORA-1555-22924 errors and how to confirm the Corruption of the LOB Segment using the export utility? [833635.1 ID]

• Download VMware vCloud Automation Center 5.1

  Hello

  I can't download VMware vCloud Automation Center 5, there is error: we activate your license right key, try your download again soon.

  What should I do? is there any step by step installation? documents is not clear!

  Hi Alain, I'm not a specialist for vCloud Automation Center, but it appears on the site KB, that you are connected and the product/downloads page linked from there that 5.1 is no longer a free trial available. I'm not an authority on the subject but if you can talk to your local VMware team or hope someone else answers here.