Golden Gate extract hanging

[Andrew Kerber]

I remember when Oracle metalink notes would actually explain the problem
and how to fix it. I have configured downstream capture of an oracle
database (10gr2) on a 12c database (12.1.0.2) using golden gate 12.3.1.0.4.
This is Linux x86_64

The extract process never completes initiailization, and hangs in the
dictionary initialization state. According to MOS note 2255938.1, this
could be problem with the global names.

However, the note never explains how to confirm that is the problem. Nor
the appropriate method to fix it (other than rename global name)? Rename
to what?

On the source database, the global name is
HOME.REGRESS.RDBMS.DEV.US.ORACLE.COM (renamed for anonymity) and the mining
database where extract is running has this as the global name:
HOMEMI.HOME.COM.

Global names is turned off on both the source database and the mining
database:
SQL> show parameter global_names

NAME TYPE VALUE
------------------------------------ -----------
------------------------------
global_names boolean FALSE

So, can someone explain what to look at to verify whether or not my problem
is what the note says? And what I need to change the mining database
global name to in order to fix the problem, if that is the problem? Or do I
need to change the global name on the source db?

SQL> select capture_name,state from v$goldengate_capture;

CAPTURE_NAME
------------------------------
STATE
--------------------------------------------------------------------------------
OGG$CAP_EXTABC10
DICTIONARY INITIALIZATION

OGG$CAP_EXTBC10
DICTIONARY INITIALIZATION