Replication Server 15.5 includes changes to default settings
and values to accommodate the enhancements in Replication Server
and improve performance.
Changes to Parameter Default Values
Except for memory_limit and smp_enable, if you upgrade to Replication Server 15.5, the only values that are set to the new defaults are those that used the defaults in the earlier version.
Changes to the RSSD Locking Schema
To reduce contention and improve performance, the default locking schema for the system tables in the Replication Server System Database (RSSD) is row-level locking when you install or upgrade to version 15.5.
Reserved Words
Version 15.5 adds to the list of reserved Replication Server keywords.