IBM Support

IT23735: NUMEROUS CONNECTIONS IN FIN_WAIT2 ON PERIMETER SERVER OPERATING SYSTEM

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APAR status

  • Closed as program error.

Error description

  • During the close cycle of a TCP connection, the Trading Partner
does not send a FIN,ACK. This results in the Perimeter Server
waiting indefinitely in FIN_WAIT2 Status for this FIN,ACK
signal from the TP.

Local fix

  • RTC ID: 574721


Preferred solution is to request the TradingPartner to comply
with the RFC and close connection correctly.
Alternatively, a restart of the Perimeter Server will free up
the number of FIN_WAIT2 connections. However, they will build up
again once new connections are made.

Problem summary

  • Users Affected:
ALL

Problem Description:
More than thousand FIN_WAIT2 status in netstat output of remote
Perimeter Server.

Platforms Affected :
ALL

Problem conclusion

  • RESOLUTION SUMMARY:
A code fix is provided.

DELIVERED IN:
5020603_7

Temporary fix

  • 



Comments


    

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APAR Information




    

  • APAR number
    IT23735
    • 

  • Reported component name
    STR B2B INTEGRA
    • 

  • Reported component ID
    5725D0600
    • 

  • Reported release
    526
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2018-01-15
    • 

  • Closed date
    2018-10-10
    • 

  • Last modified date
    2018-10-16
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    • 



Fix information


    

  • Fixed component name
    STR B2B INTEGRA
    • 

  • Fixed component ID
    5725D0600
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS3JSW","label":"IBM Sterling B2B Integrator"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.2.6","Edition":"","Line of Business":{"code":"LOB02","label":"AI Applications"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            16 October 2018
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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