On 2021/01/12 9:06, Jeff Davis wrote:
Commit 5ee2197767 (about 4 years old) introduced the error:

   "IDENTIFY_SYSTEM has not been run before START_REPLICATION"

But it seems like running START_REPLICATION first works (at least in
the simple case).

We should either:

1. Document that IDENTIFY_SYSTEM must always be run before
START_REPLICATION, and always issue a WARNING if that's not done (an
ERROR might break existing applications); or

2. If the commit is out of date and no longer needed, or if it's easy
enough to fix, just remove the error (and Assert a valid
ThisTimeLineID).
+1 to remove the error if START_REPLICATION can always work fine without
IDENTIFY_SYSTEM. I found that the error happens when we connect to the standby
and just run START_REPLICATION without IDENTIFY_SYSTEM. But I'm not sure
if IDENTIFY_SYSTEM is actually necessary even in that case.

Regards,

--
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION


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