In another post in this thread you asked for a Monitor dump. This is what i get on that machine:

/*---
CONNECT DATABASE '192.168.100.15:D:\Data\firstlane\shia.fdb'
user_name = 'SYSDBA'
password = '********' (redacted)
DB_HANDLE = 1

SECONDS = 0,016
----*/
/*---
START TRANSACTION
DB HANDLE COUNT 1
DB HANDLE 1 = 1
TPB VERSION 3
read
TR_HANDLE = 2

SECONDS = 0,031
----*/
/*---
DATABASE INFO
DB_HANDLE = 1
----*/
/*---
EXECUTE IMMEDIATE 2
DB_HANDLE = 1
TR_HANDLE = 2
Dialect = 3

SELECT D.RDB$CHARACTER_SET_NAME FROM RDB$DATABASE D

PARAMS = [ ]
FIELDS = [ Version 1 SQLd 1 SQLn 1 BasePtr: 0017F474
[CHARSET] = 'WIN1252 ' (128 bytes) < TEXT SubType: 0 Len: 128 Scale: 0 Ind/SQL Data Offsets: 0/-142 > ]
----*/
/*---
COMMIT
TR_HANDLE = 2

SECONDS = 0,015
----*/
/*---
DISCONNECT DATABASE
DB_HANDLE = 1
----*/
/*---
CONNECT DATABASE '192.168.100.15:D:\Data\firstlane\shia.fdb'
user_name = 'SYSDBA'
password = '********' (redacted)
lc_ctype = 'WIN1252'
DB_HANDLE = 3
----*/
/*---
DATABASE INFO
DB_HANDLE = 3

SECONDS = 0,016
----*/
/*---
INTERPRET BUFFER = unknown ISC error 0
MSG_LEN = 19
----*/
/*---
INTERPRET BUFFER =
MSG_LEN = 0
----*/
/*---
INTERPRET BUFFER = unknown ISC error 0
MSG_LEN = 19
----*/
/*---
INTERPRET BUFFER =
MSG_LEN = 0
----*/
/*---
INTERPRET BUFFER = unknown ISC error 0
MSG_LEN = 19
----*/
/*---
INTERPRET BUFFER =
MSG_LEN = 0
----*/

This indicates that our affected machines are having problems issuing two connection in rapid sequence. Odd...

HTH,

/D

--- In IBObjects@yahoogroups.com, "DanyM" <danymarmur@...> wrote:
>
>
>
> Ops! Mee too!
>
> Same scenario: A client windows small business server 2008. Affects the IB_FTS Util and my FTS indexing service on that machine. Tried to fiddle with the connection parameters to no avail (localhost/127.0.0.1/DNS Name) alias or path. No go.
>
> The Util is 32-bit and the service is 64-bit. Same diagnose.
>
> I can not restart the server from here, but i'll ask the on-site people to do it when possible.
>
> Oh, and i too accessed the clients using Terminal Sever.
>
> Regards,
>
> /Dany
>
>
>
> --- In IBObjects@yahoogroups.com, Markus Ostenried <macnoz@> wrote:
> >
> > Just had the same problem in an Amazon Windows Server 2012 instance.
> > Restarting the instance fixed it for now.
> >
> >
> > On Fri, Aug 2, 2013 at 1:10 AM, garethm <gareth@> wrote:
> >
> > > **
> > >
> > >
> > > 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)| |
> > > >
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>