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orbd


       orbd is used to enable clients to transparently locate and
       invoke persistent objects on servers in the CORBA environ­
       ment.


SYNOPSIS

       orbd < options >


DESCRIPTION

       The  orbd  tool is used to enable clients to transparently
       locate and invoke persistent  objects  on  server  in  the
       CORBA environment.  The persistent servers, while publish­
       ing the persistent object references in  the  Naming  Ser­
       vice,  include  the  port number of the ORBD in the object
       reference instead of the port number of  the  Server.  The
       inclusion  of ORBD port number in the object reference for
       persistent object references has the following advantages:

       ˇ The object reference in the Naming Service remains
         independent  of  the server life cycle. For example, the
         object reference could be published by the server in the
         Naming  Service  when  it  is  first installed, and then
         independent of how many times the server is  started  or
         shutdown, the ORBD will always return the correct object
         reference to the invoking client.

       ˇ The client needs to lookup the object reference in
         the Naming Service only once, and can keep re-using this
         reference  independent  of  the chanes introduced due to
         server life cycle.

       The orbd tool incorporates the following functionality:

       ˇ Server Manager
         When used in conjunction with the servertool, the Server
         Manager  locates, registers, and activates a server when
         a client wants to access the server.

       ˇ Interoperable Naming Service (INS)
         The naming service maps logical names to  object  refer­
         ences  so  that  you  can  use  the name to retrieve the
         object reference and invoke operations on  that  object.
         ORBD  is  used  instead of the Transient Naming Service,
         tnameserv. ORBD includes both a Transient Naming Service
         and a Persistent Naming Service.

       ˇ Bootstrap Name Server
         The  persistent  servers publish their object references
         in this Name Server. The clients can, in  turn,  contact
         this  Name  Server for looking up the object references.
         The advantage of providing this bootstrap name server as

       -defaultdb directory
              Specifies the base where the ORBD persistent  stor­
              age  directory orb.db is created. If this option is
              not specified, the  default  value  is  "./orb.db".
              (optional)

       -serverid ID
              Specifies  the  persistent server ID to be assigned
              to this ORBD. The default value is 1. (optional)

       -ORBInitialPort nameserverport
              Specifies the port  on  which  the  bootstrap  name
              server  is  running.  Note  that when using Solaris
              software, you must become root to start  a  process
              on a port under 1024. For this reason, we recommend
              that you use a port number greater than or equal to
              1024. (required)

       -serverPollingTime milliseconds
              Specifies  how  often  the daemon thread checks for
              the health of registered servers. ORBD  polls  pro­
              cess  health every milliseconds.  The default value
              is 1,000 ms (or 1 second). The value specified  for
              milliseconds must be a valid integer.

       -serverStartupDelay milliseconds
              Specifies  how  long the ServerManager waits before
              sending a  location  forward  exception  after  the
              server  is  restarted.  ORBD waits for milliseconds
              before raising a location  forward  exception.  The
              default  value is 1,000 ms (or 1 second). The value
              specified for milliseconds must be a valid integer.

       J  option
              Pass  option  to  the  Java  virtual machine, where
              option is one of the options described on  the  man
              page  for  the  java application launcher, java(1).
              For example, -J-Xms48m sets the startup  memory  to
              48  megabytes.  It is a common convention for -J to
              pass options to the underlying virtual machine.

   ENVIRONMENT VARIABLES
       CLASSPATH
              Used to provide the system a path  to  user-defined
              classes.  Directories  are separated by colons. For
              information on setting the CLASSPATH,  see  Setting
              the Class Path.


SEE ALSO

       java, javac, classpath, servertool

  
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