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AdministeringIn addition to administering the database server, you can tune performance, replicate data, and archive data.
Enterprise ReplicationThe HCL OneDB™ Enterprise Replication Guide describes the concepts of data replication using HCL® OneDB® Enterprise Replication, including how to design your replication system, as well as administer and manage data replication throughout your enterprise.
Setting up and managing Enterprise ReplicationAfter you design your replication system, you define it and start replication.
Monitor and troubleshooting Enterprise ReplicationYou can monitor and diagnose problems with the Enterprise Replication system by using several different methods, depending on your needs.
Preventing Memory Queues from OverflowingIn a well-tuned Enterprise Replication system, the send queue and receive queue do not regularly overflow from memory to disk. However, if the queues in memory fill, the transaction buffers are written (spooled) to disk. Spooled transactions consist of transaction records, replicate information, and row data. Spooled transaction records and replicate information are stored in the transaction tables and the replicate information tables in a single dbspace. Spooled row data is stored in one or more sbspaces.
Recovering when Storage Spaces Fill

Recovering when Storage Spaces Fill

When the Enterprise Replication dbspace runs out of disk space, Enterprise Replication raises an alarm and writes a message to the log. When the sbspace runs out of disk space, Enterprise Replication hangs. In either case, you must resolve the problem that is causing Enterprise Replication to spool (Preventing Memory Queues from Overflowing) or you must allocate additional disk space (Increasing the Sizes or Numbers of Storage Spaces) before you can continue replication.