Dispatchers Fail to Start: Alert log Shows: Dispatcher 'D00n' encountered error setting up listening port (Doc ID 2055083.1)

Last updated on MARCH 31, 2022

Applies to:

Symptoms

The dispatchers suddenly became unreachable.

The D00x processes exist but are not available from any client attempting a shared connection.

The following messages were repeated throughout the alert.log:

dispatcher 'D001' encountered error setting up listening port
starting up 1 dispatcher(s) for network address '(ADDRESS=(PROTOCOL=TCP)(HOST=myhostname)(PORT=5000))'...
Fri Aug 28 07:03:48 2015
dispatcher 'D002' encountered error setting up listening port
starting up 1 dispatcher(s) for network address '(ADDRESS=(PROTOCOL=TCP)(HOST=myhostname)(PORT=5001))'...
Fri Aug 28 07:03:48 2015
dispatcher 'D003' encountered error setting up listening port
starting up 1 dispatcher(s) for network address '(ADDRESS=(PROTOCOL=TCP)(HOST=myhostname)(PORT=5002))'...
Fri Aug 28 07:03:48 2015
dispatcher 'D004' encountered error setting up listening port
starting up 1 dispatcher(s) for network address '(ADDRESS=(PROTOCOL=TCP)(HOST=myhostname)(PORT=5003))'...
Fri Aug 28 07:03:48 2015
dispatcher 'D005' encountered error setting up listening port
starting up 1 dispatcher(s) for network address '(ADDRESS=(PROTOCOL=TCP)(HOST=myhostname)(PORT=5004))'...
Fri Aug 28 07:03:48 2015
dispatcher 'D006' encountered error setting up listening port

Cause

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