In mixed-version Enterprise Replication environments that involve 9.21/9.20 servers, the NIF does not properly report its version when it responds to a new server. When a new server sends an initial protocol message to a sync server, the sync server, instead of properly giving its version, gives back the version of the new server. If a 10.0/9.40/9.30 server tries to synchronize with a 9.21/9.20 server, the older server responds to the 10.0/9.40/9.30 server that it is a 10.0/9.40/9.30 server and will subsequently fail.
To prevent this malfunction:
If you have Version 9.21/9.20 servers in your Enterprise Replication environment, set the CDRSITES_92X environment variable, as appropriate, for 9.30, 9.40, or 10.0 database servers by setting the CDRSITES_92x cdrID for these Version 9.20 and 9.21 servers.
The cdrID is the unique identifier for the database server in the Options field of the SQLHOSTS file ( i = unique_ID).
For example, suppose that you have 5 Informix Dynamic Servers, Version 9.21/9.20 whose cdrID values range from 2 through 10 (cdrIDs = 2, 3, 8, 9, and 10)
If you upgrade database server cdrID 8 to Version 10.0/9.40/9.30, you must set the CDRSITES_92X environment variable for the other server cdrIDs before bringing the Version 10.0/9.40/9.30 database server online:
setenv CDRSITES_92x "2,3,9,10"
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