Hi,

I have also had sporadic issues with this problem in our internal testing.

Here are our observations:
- We are currently using IBO-5.2.0 Build 6.
- It can happen when connecting to a Firebird server using TCP and when using Firebird in embedded mode.
- Once this happens, the only way to get applications that use IBObjects to connect to databases again appears to be to restart the computer. Neither restarting the application nor reinstalling the application make any difference.
- Once this happens, our applications cannot connect to local or remote databases and both network and embedded Firebird connection attempts throw the same "ISC ERROR CODE: 335544648 unknown ISC error code 0" exceptions.
- FlameRobin running on the computer experiencing the issues can connect to both local and remote databases without issue.
- Our application running on other computers can connect to the Firebird server running on an affected machine without issue.
- In one case, this happened after the user logged in to their computer via remote desktop, and we aren't sure about the other cases.

Any advice on resolving this issue would be appreciated.

Regards,
Gareth Marshall

--- In IBObjects@yahoogroups.com, Marcin Bury <marcin.bury@...> wrote:
>
> Hello
>
> I have recently upgraded IBO library to 5.2.0.7 (the latest version).
> Everything works great except one customer environment. There is MS
> Terminal Server where application compiled with latest IBO returns
> following exception after connecting to the Firebird server [2.5.1.26266] :
>
> ISC ERROR CODE:335544648
>
> ISC ERROR MESSAGE:
> unknown ISC error 0
>
> I did some searching and found that this error code represents following
> error:
>
> 335544648 conn_lost Connection lost to pipe server
>
> I haven't noticed any similar behavior elsewhere.
>
> Below is attached call stack from EurekaLog.
> Maybe someone will be able to suggest something how to find the cause of
> the exception...
>
> Thanks
> Marcin
>
>
> |
> |-----------------------------------------------------------------------------------------------------------------------------------------|
> |7FFFFFFE|04 |00000000|0090D224|ZT_ML_115.exe|0050D224|IB_Session
> |TIB_SessionBase|HandleException |1599[106] |
> |00000040|04 |0012EB20|00719A46|ZT_ML_115.exe|00319A46|EInject
> | |GetExceptionStackInfoHook |364[9] |
> |00000040|03
> |0012EB44|004492D8|ZT_ML_115.exe|000492D8|System.SysUtils|Exception
> |RaisingException | |
> |00000040|04 |0012FC9C|00968303|ZT_ML_115.exe|00568303|IB_Components
> |TIB_Transaction|API_Start |20100[115] |
> |00000040|04 |0012FD5C|0096651E|ZT_ML_115.exe|0056651E|IB_Components
> |TIB_Transaction|SysStart |19021[11] |
> |00000040|04 |0012FD68|0096773E|ZT_ML_115.exe|0056773E|IB_Components
> |TIB_Transaction|SetStarted |19652[4] |
> |00000040|04 |0012FD78|0092EC39|ZT_ML_115.exe|0052EC39|IB_Schema
> | |GetOldParameterOrder |2163[14] |
> |00000040|04 |0012FDFC|00960742|ZT_ML_115.exe|00560742|IB_Components
> |TIB_Connection |SysAfterConnect |16677[38] |
> |00000040|04 |0012FE60|009601BA|ZT_ML_115.exe|005601BA|IB_Components
> |TIB_Connection |SysLogin |16491[23] |
> |00000040|04 |0012FE78|009600A7|ZT_ML_115.exe|005600A7|IB_Components
> |TIB_Connection |SysConnect |16454[14] |
> |00000040|04 |0012FE88|0095CCED|ZT_ML_115.exe|0055CCED|IB_Components
> |TIB_Connection |Connect |15426[7] |
> |00000040|04 |0012FEA0|00F4102C|ZT_ML_115.exe|00B4102C|DM
> |T_DM |Set_DB_Connection |453[8] |
> |00000040|04 |0012FEC8|00F3F7A3|ZT_ML_115.exe|00B3F7A3|DM
> |T_DM |DataModuleCreate |142[14] |
> |00000040|03
> |0012FEF4|004E946F|ZT_ML_115.exe|000E946F|System.Classes |TDataModule
> |DoCreate | |
> |00000040|03
> |0012FF18|004E931C|ZT_ML_115.exe|000E931C|System.Classes |TDataModule
> |AfterConstruction | |
> |00000040|03
> |0012FF40|004E92FA|ZT_ML_115.exe|000E92FA|System.Classes |TDataModule
> |Create | |
> |00000040|03 |0012FF74|007095E6|ZT_ML_115.exe|003095E6|Vcl.Forms
> |TApplication |CreateForm | |
> |00000040|04 |0012FFAC|014C8281|ZT_ML_115.exe|010C8281|ZT_ML
> | |Initialization |92[5] |
> |00000040|03 |0012FFC4|7C82F23B|kernel32.dll |0002F23B|kernel32
> | |(possible ProcessIdToSessionId+521)| |
>