Reduced performance usually occurs when the operating system or machines are overloaded as a result of increased demands on the system. Reduced performance can result from adding applications or Replication Server components, executing very large transactions, or even upgrading the operating system.
Performance problems can be critical or noncritical. You can eliminate noncritical performance problems by optimizing your replication system. For noncritical problems, see the Replication Server Administration Guide Volume 2.
If critical performance problems are left unresolved, performance degradation can lead to fatal problems, such as full stable queues, in which replication stops. A replication, materialization, or dematerialization failure can be caused by a critical performance problem.
Introducing new components, such as Adaptive Servers, databases, Replication Servers, RepAgents, or Replication Agents. New components may cause resource contention and overload any component.
Changing the operating system. Upgrading the operating system, applying patches, changing kernel parameters, or rebuilding the kernel may adversely impact your replication system, memory allocation, and resources.
Adding applications to the replication system, which may impact memory requirements and use resources.
Replicating a very large database, which may produce a very high latency. Large transaction or an open transaction is also a possible cause.