Replication Server performs character set conversion on data
and identifiers between primary and replicate databases. However,
Replication Server does not perform character set conversion between
incompatible character sets. If the character sets are compatible,
but one or more characters are not common to both character sets,
a question mark (?) is substituted for the unrecognized characters.
A configuration parameter in the rs_config system
table, dsi_charset_convert, gives
you options for how Replication Server handles character set conversion. You
set this parameter with the alter connection command.
rs_get_charset System Function
Each time Replication Server connects to a data server, it
executes rs_get_charset, which
obtains the character set used by the data server. If it is not
what is expected, Replication Server prints a warning message to
the error log file.