This type of handler. This is either a predefined value for built-in handlers, or a fully qualified Java class name. The syntax is:

gg.handler.name.type={jms|jms_map|aq|singlefile|rollingfile|custom_java_class}

Where:

All but the last are pre-defined handlers:

• jms – Sends transactions, operations, and metadata as formatted messages to a JMS provider

• aq – Sends transactions, operations, and metadata as formatted messages to Oracle Advanced Queuing (AQ)

• jms_map – Sends JMS map messages

• singlefile – Writes to a single file on disk, but does not roll the file

• rollingfile – Writes transactions, operations, and metadata to a file on disk, rolling the file over after a certain size, amount of time, or both. For example:

  gg.handler.name1.rolloverSize=5000000
  gg.handler.name1.rolloverTime=1m
  
  

• custom_java_class – Any class that extends the Oracle GoldenGate for Java AbstractHandler class and can handle transaction, operation, or metadata events

  The Oracle GoldenGate foe Big Data package also contains more predefined handlers to write to various Big Data targets.