Oracle Support

Learn about the new Replication Agent 15.6 features for Oracle support.

• Reload User Information
  In versions earlier than 15.6, the only way to synchronize users in the primary database and users in the Replication Agent System Database (RASD) was to use pdb_xlog init, force. However, this command also refreshes the table schema and therefore requires extra time.
• Skip Log Reader Errors
  You may need to prevent log reader errors from stopping replication in systems that cannot afford down time during periods of high volume and high demand. You can then address skipped errors at a more convenient time.
• Oracle Database 11g Release 2
  All of the functionality that Replication Agent supports for Oracle Database 11g Release 1 is also supported by Replication Agent for Oracle Database 11g Release 2. Replication Agent also supports some functionality introduced by Oracle Database 11g Release 2.
• Linux Block Devices
  Block devices are disks or memory regions in which data is accessed in blocks. Linux block devices are generally accessed through I/O buffers. However, Linux block devices can also be accessed directly, and Oracle uses direct I/O to write to its redo logs. It is therefore important for Replication Agent to directly read from the block devices on which Oracle redo logs are stored. Otherwise, stale or nonexistent block data from device I/O buffers may interfere with replication.
• Oracle Cluster File System 2 (OCFS2)
  OCFS2 is a shared-disk cluster file system. OCFS2 is not a general-purpose file system but can contain all Oracle data files, redo and archive log files, and control files. OCFS2 presents a consistent file system image across the servers in an Oracle cluster and eliminates the need for managing raw devices, thereby simplifying the administration of RAC.
• High Availability
  A primary data server may employ a high-availability solution, such as failover clustering, to minimize downtime in the event of hardware or software failure.
• ASMLib
  Replication Agent for Oracle adds support for the ASMLib library for Linux.