SAP IQ 16 remote procedure to MsSQL 2005 error.

Question

Hi all,
    I've in IQ a remote procedure that call via RPC an old MsSQL 2005 stored procedure.
In my old installation with IQ 12.7 ESD 4 all works well and I don't report any issues.
Actually with the new IQ 16.0 SP08 I've the following strange behaviours.
ERROR 1) When I call the remote procedure from IQ using SAP Interactive SQL all works well if I run the client from a remote host. I mean from an host which is not the server where IQ engine is running. If I execute the same call (always from SAP Interactive SQL) on the IQ engine server the following error is reported:
There was an error reading the results of the SQL statement.
The displayed results may be incorrect or incomplete.
Cursor not in a valid state
SQLCODE=-853, ODBC 3 State="24000"
Cursor not in a valid state
SQLCODE=-853, ODBC 3 State="24000"
Server 'SVR_PRODOTTI': [Microsoft][ODBC SQL Server Driver]Function
sequence error
SQLCODE=-660, ODBC 3 State="HY000"
ERROR 2) I've the following scenario:
     a.     I call a remote procedure (always the MsSQL 2005 remote procedure described above) inside a standard IQ stored procedure
     b.     the remote procedure fill a remote table with some data
     c.     in IQ after that the remote procedure is executed I want to get the produced data in IQ via proxy table
Looking at MsSQL side I note that step (a) and (b) are executed, but when step (c) start running it remains blocked by the session that had run step (a and b) even if they are already finished. Look at the following extraction of session state by MsSQL side.
SPID Status Login HostName     BlkBy  DBName Command CPUTime      DiskIO LastBatch ProgramName       SPID   REQUESTID
177 SUSPENDED usr     IQ_SERVER  287    master EXECUTE            0        0        06/19 17:31:38 Sybase IQ 177    0   
287 sleeping  usr     IQ_SERVER    .    master AWAITING COMMAND    9829 153149       06/19 17:31:38 Sybase IQ 287    0   
SPID = 287 (remote procedure call)
RPC Event 0      sp_remote_procedure;1
SPID = 177 (proxy table access)
Language Event 0      SELECT .... FROM .... t1 
Environment details:
IQ -> SAP IQ 16.0 SP08 on Win 2012 R2 server (64 bit)
MSSQL -> MsSQL 2005 SP 2 32 bit Enterprise on Win 2003 server (32 bit)
Do you have any suggestions about this strange behaviours?
Best regards,
Stefano

Answer 1

Hi Tayeb,
    thank you for your suggestions, following some improvement and details about my errors.
ERROR 1) [SOLVED]
In SAP Interactive SQL: Tools -> Options -> SAP Sybase IQ
The problem appear only if "Result processing" options are configured as:
"Show results from the last statement" --> ON
"Show only the first result set" --> ON
..hereafter I report the image that show the configuration that caused error.
Any other configuration of these two parameters doesn't show any problem.
ERROR 2) [already present]
I checked the IQ 16 SP08 doc and as you reported MsSQL 2005 is not listed in RPC certified systems.
I checked also the old IQ 12.7 ESD 4 (the version from which I want to migrate and where all works fine every day) doc and the same statement was reported. So not even in 12.7 release MsSQL RPC call seems to be certified, even if it still withou any problem.
After some other tests tracing also different debugging mode (-zo and -zr) I share the following result.
I tried the following use cases.
Note that "rem_mssql_TARGET" sp insert data in a local table on MsSQL which is selected by IQ via proxy "pr_DELTA_IQ".
[TEST A] - RDP via select
    select
      @max_date = RetDate,
      @error = RetCode 
    from
      DBA.rem_mssql_TARGET('2014-06-20 15:00:00')
insert into DBA.DELTA_IQ 
  FIELD_1,
  FIELD_2
                       location 'TARGET_DB.TARGET_DB'
    select     
  FIELD_1,
  FIELD_2
    from DBA.pr_DELTA_IQ
PROBLEM: on MsSQL all remains blocked, because proxy table extraction is blocked by remote procedure execution that result running.
If I kill the remote procedure session from MsSQL, IQ engine shutdown itself without any messages.
No data is inserted in DBA.DELTA_IQ.
[TEST B] - RDP via exec
exec DBA.rem_mssql_TARGET ('2014-06-20 15:00:00')
insert into DBA.DELTA_IQ 
  FIELD_1,
  FIELD_2
                       location 'TARGET_DB.TARGET_DB'
    select     
  FIELD_1,
  FIELD_2
    from DBA.pr_DELTA_IQ
PROBLEM: MsSQL doesn't report any blocking session.
IQ return the following message and the IQ server doesn't shutdown itself.
SQLCODE=-706, ODBC 3 State=“HY000”
Remote server does not have the ability to support this statement
Anyway all is rollbacked an no data is inserted in DBA.DELTA_IQ.
Do you have any other hints about it?
Thank you and regards,
Stefano