Before tuning GoldenGate

There are a number of considerations we need to be aware of before we start the tuning process. For one, we must consider the underlying system and its ability to perform. Let's start by looking at the source of data that GoldenGate needs for replication to work the online redo logs.

Online redo

Before we start tuning GoldenGate, we must look at both the source and target databases and their ability to read/write data. Data replication is I/O intensive, so fast disks are important, particularly for the online redo logs. Redo logs play an important role in GoldenGate: they are constantly being written to by the database and concurrently being read by the Extract process. Furthermore, adding supplemental logging to a database can increase their size by a factor of 4!

Firstly, ensure that only the necessary amount of supplemental logging is enabled on the database. In the case of GoldenGate, the logging of the Primary Key is all that is required.

Next, take a look at the...