Informational briefs for DB2 for LUW are simply brief introduction to a particular
component or feature of DB2 for LUW.
Local High Availability and Remote Disaster Recovery
Local High Availability and Remote Disaster Recovery (LHA/RDR) is a
hybrid High Availability Disaster Recovery solution that combines the best benefits of having a local high availability
solution with those of having a remote disaster recovery by having both a local and remote failover database servers.Read more
about Local High Availability and Remote Disaster Recovery in this info brief.
High Availability Disaster Recovery
High Availability Disaster Recovery (HADR) is a new feature introduced
in DB2 UDB v8.2 for Linux, UNIX, and Windows. It is an integrated feature that provides for both high availability and disaster
recovery by replicating data from a primary database to a standby database. HADR provides data protection for both partial
system failures due to hardware or software failures and complete site failures due to natural disasters. DB2 UDB also includes
two new Wizards to configure and manage HADR that are accessed from the DB2 Control Center. Read more about High Availability Disaster Recovery in this info brief.
Clustering for High Availability
Clustering for high availability, sometimes called failover
clustering, is much like the buddy system in scuba diving. The idea behind the buddy system is very simple. If your system
fails (air supply) you will be down (unable to breath) for a short period of time (down time) until you are able to locate,
notify, and gain access (fail over) to your buddy's system (air supply). Read more about Clustering for High Availability in this info breif.
Log Shipping for High Availability
Log shipping for high availability is the process of keeping a
secondary database on a standby server synchronized with the primary database by transferring (log shipping) and applying the
database transaction logs from the primary to the secondary database. The idea behind log shipping is to take the work load
that has already been applied to the primary database server and ship it over to a backup system, via the database transaction
logs, where it can be applied to a standby database so that in the event of a failure to the primary system the database on the
secondary system is just about in the same state as the primary database was right before the system failure. Read more about Log Shipping for High Availability in this info brief.
Data Replication is the process of maintaining a defined set of data
in more than one location. It involves copying changes from one database (a source) to another database (a target), and
synchronizing the data in both locations. Data Replication is a component of DB2 UDB since v5 which allows you to publish
replication sources and define replication subscriptions. These subscriptions are defined and managed using DB2's graphical
user interface administration tool known as the DB2 Control Center. The actual subscription information is stored in
Replication Control Tables which are automatically created by the DB2 Control Center the first time a replication source or
target is defined. Read more about Data Replication in this info brief.
Database Partitioning Feature (DPF)
The Database Partitioning Feature (DPF) is an optionally licensed
component of DB2 UDB v8.2 Enterprise Server Edition (ESE) for Linux, UNIX, and Windows. The DPF provides the ability to
partition a database within a single server or across a cluster of servers providing scalability that can support very large
databases, complex workloads, and parallelism for database administration tasks. Read more about Database Partitioning Feature (DPF) in this info brief.
Large Memory Support
Large memory support is critical for any database management system
because simply put accessing data in memory is much faster than accessing it from disk storage. DB2 UDB v8.2 for Windows
supports several features that allow it to address large amounts of memory. Read more about Large Memory Support in this info brief.
Enhanced Security Features
DB2 UDB v8.2 introduced a number
of new or enhanced security features. Many of these features are designed specifically for the Windows platform. Read more about Enhanced Security Features in this info brief.