ASM Access From DBCA or OEM Fails With "IO Exception: The Network Adapter Could Not Establish a Connection"

(Doc ID 604155.1)

Last updated on APRIL 24, 2015

Applies to:

Oracle Net Services - Version to [Release 10.2]
Oracle Database - Enterprise Edition - Version to [Release 10.2]
Information in this document applies to any platform.
Oracle Server - Enterprise Edition - Version: to
This problem can occur on any platform.


Normal RAC configuration with ASM enabled.
Sometimes, when changes are made to the listener.ora file (manually or with a Nettool), then neither OEM nor DBCA are able to connect to the ASM instances.
Also, just installing RAC and configuring ASM this can occur.

The error thrown by DBCA is:
"Error when connecting to ASM instance on local node:
IO exception: The Network Adapter could not establish a connection."



Changes made to the listener.ora file, such as the inclusion of control parameters such as:
ADMIN_RESTRICTIONS_<listener_name> = ON
LOGGING_<listener_name> = ON


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