New releases
At the time of writing this book, a new release of Oracle GoldenGate has become available:
Version 11.1.1.0.0 Build 078 for Oracle 11gR2
This version runs on the Oracle Sun Exadata2 Database Machine (11.2.0.1), but is not without some performance issues. A known bug causes slow write performance to a Database file system (DBFS), which would typically be used to store the GoldenGate persistent files in a RAC environment. During tests, the measured data pump write rate (with no Replicat processes running) into DBFS was 1.5 to 1.7 MB/sec. For comparison, the Data Pump write rate into a regular Linux file system on the same server was in the 30 MB/sec range and simple writes using the Linux dd utility into the same DBFS mount produced rates in the 30 to 50 MB/sec range.
Happily however, Oracle states this issue is fixed in the next release of GoldenGate: Version 11.1.1.0.5 Build 003.
DBFS enhancements
When configuring DBFS, it is highly recommended to adopt the following options:
Create...
