[omniORB] sockets/file descriptors

[Ralf Walther]

Hi CORBAholics,

does anybody notice following facts, too?

   - Five omniOrb servers are running
   - All CORBA requests work fine
   - After using database access with RogueWave (via Oracle OCI)
     one omniOrb server gets blocked in the method
     tcpSocketRendezvouser::run_undetached
     (it is said, that this occurs, if the process can't get a new   
socket, so
      it has to wait until another process releases one, BUT there are
      enough sockets on my machine)
   - lsof -i reports following strange output:


=> myNS      28243   cminer    3u
    inet 0x05fa6500       0t0  TCP *:1700 (LISTEN)

 CMUserSer 28263   cminer    3u
    inet 0x0bfc7900       0t0  TCP *:1704 (LISTEN)

 CMSession 28266   cminer    3u
    inet 0x05bd3400       0t0  TCP *:1701 (LISTEN)

 CMClientS 28277   cminer    5u
    inet                  0t0  TCP no protocol control block

 CMClientS 28277   cminer    6u
    inet 0x05ff4d00       0t0  TCP idefix:2696->idefix:1700 (CLOSE_WAIT)

 CMClientS 28277   cminer    8u
    inet 0x0519b200       0t0  TCP idefix:2697->idefix:1703 (CLOSE_WAIT)

 oracleALL 28278   cminer    3u
    inet 0x07405f00       0t0  TCP *:2691 (LISTEN)

 oracleALL 28278   cminer    5u
    inet                  0t0  TCP no protocol control block

=> oracleALL 28278   cminer    6u
    inet 0x05ff4d00       0t0  TCP idefix:2696->idefix:1700 (CLOSE_WAIT)

 oracleALL 28278   cminer    7u
    inet 0x0bbfa900       0t0  TCP idefix:2691->idefix:2695 (CLOSE_WAIT)


Q0: What other reason than insufficient sockets could let a server block
    in tcpSocketRendezvouser::run_undetached?
Q1: What does CLOSE_WAIT mean exactly? A process waits until a socket
    connection was successfully closed?
Q2: Why does Oracle have a connection to the name service (see =>) on
    port 1700. The port 1700 was given to the name service via command
    line parameters.
Q3: Is it possible, that a socket connection could have a status, which
    allows another process to use the same socket, too?
Q4: Does anyone have experiences with incorrect interactions between
    omniOrb servers and other socket using apps?
      


Sorry for so many questions! Maybe one small hint can solve
a pile of them.

Thanks in advance

 Ralf

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rw@neurotec.de