In LoadRunner or Performance Center 11.00, during the middle of a running a scenario or load test, the LR Controller or PC output starts reporting Error: -30935 "Error: Failed to send data by channels – post message failed." and no additional successful transactions are registered for the run.

The error occurs on the Load Generator machine(s) when one of the threads under lr_bridge.exe that updates the eve files is not getting enough CPU time slice to be able to send events to the Controller. Enabling an additional flag in the mdrv.dat file on the LG machine will maintain the read and write threads for the eve files on the same main thread, thus allowing it to have all the CPU time needed.

To fix this issue :

Disable Web Diagnostics for J2EE/.NET. If the behavior remains, go through the next steps.

On all of the Load Generator machines where the Vusers are being executed, edit the <LR or PC Installation>\dat\mdrv.dat file by adding the line listed below in bold:

[lr_trans_server]

ExtPriorityType=transaction_server

WINNT_EXT_LIBS=trans_server.dll

WIN95_EXT_LIBS=trans_server.dll

LINUX_EXT_LIBS=libtrans_server.so

SOLARIS_EXT_LIBS=libtrans_server.so

HPUX_EXT_LIBS=libtrans_server.sl

AIX_EXT_LIBS=libtrans_server.so

LibCfgFunc=TransactionServer_configure

GetLoaderInterfaceFunc=get_ts_interface

AddLoaderClientInterfaceFunc=add_ts_client_interface

GetLoaderCommandLine=trans_server_extra_ext

Loader=1

ExtMessageQueue=0

SecurityMode=On

ExtCmdLineOverwrite=-eve_thread_run_on_main_thread

Save the changes in the mdrv.dat file then re-run the load test.

After installing VuGen/LoadRunner 11.5x if you are not able to open VuGen due a .NET exception, in order to overcome this problem it is required to manually register a dll.

Follow the steps below:

1. Open regedit and look for the CLSID value as follows: {CF405F74-C2F7-4814-AD81-525877D8C9A0} (the value that shows up in the error message when you open VuGen) and check if it is present.

2. If it is present then run the following command

regsvr32 /u "C:\Program Files (x86)\HP\Virtual User Generator\bin\SnapshotLoaderWrap.dll" * Note: Location of bin folder depends on your current installation of VuGen SA or LoadRunner

3. If Path is not present, refer to command mentioned at 5th point.

4. Check if the registry is present and if it still present, run the command again until you this registry key path is removed.

5. Once it is removed, run the following command

regsvr32 "C:\Program Files (x86)\HP\Virtual User Generator\bin\SnapshotLoaderWrap.dll" * Note: Location of bin folder depends on your current installation of VuGen SA or LoadRunner

6. Launch VuGen and the problem should not occur anymore.

The SQLite files are related to Firefox profile. They include information regarding browser extensions, permissions, and other settings Firefox need.

They are mandatory for the script execution and are not supposed to be deleted.

LoadRunner 11.50 supports Google Web Toolkit 2.0 and onwards. Google Web Toolkit versions v 1.5.3 and lower are not supported anymore.