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ONS has Thousand Processes/Threads and Still Increasing (Doc ID 1547703.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Information in this document applies to any platform.

Symptoms

The number of ONS processes/threads continuously increases.

oracle    9470 17663  7447  0 7599 07:11 ?        00:00:00 /orahome/app/grid/opmn/bin/ons -d
oracle    9470 17663  8920  0 7599 07:12 ?        00:00:00 /orahome/app/grid/opmn/bin/ons -d
oracle    9470 17663 10425  0 7599 07:13 ?        00:00:00 /orahome/app/grid/opmn/bin/ons -d
..

The output of command - "onsctl debug"

           IP ADDRESS                   PORT    TIME   SEQUENCE  FLAGS
--------------------------------------- ----- -------- -------- --------
                              127.0.0.1  6200 511c7ccb 00000001 00000008
Listener:
  TYPE                BIND ADDRESS               PORT  SOCKET
-------- --------------------------------------- ----- ------
Local                                  127.0.0.1  6100      5
Remote                                       any  6200      6
Remote                                       any  6200      -
Connection Topology: (1)
                IP                      PORT   VERS  TIME
--------------------------------------- ----- ----- --------
                              127.0.0.1  6200     4 511c7cdd=
                           **                               127.0.0.1 6200 
                           **                               127.0.0.1 6200 
Server connections:
   ID            CONNECTION ADDRESS              PORT  FLAGS  SENDQ REF WSAQ
-------- --------------------------------------- ----- ------ ----- --- ----
       6                               127.0.0.1  6200 090026 00000 001     
Client connections:
   ID            CONNECTION ADDRESS              PORT  FLAGS  SENDQ REF SUB W
-------- --------------------------------------- ----- ------ ----- --- --- -
       1                                internal     0 01008a 00000 001 002  
       2                               127.0.0.1  6100 01001a 00000 001 001  
       5                               127.0.0.1  6100 01001a 00000 001 000  
 request                               127.0.0.1  6100 03201a 00000 001 000 

Cause

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In this Document
Symptoms
Cause
Solution
References

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