2.75 FASTREADS | NOFASTREADS

Valid for

Coordinator, Extract, Replicat

Description

Use FASTREADS to change the number of bytes that Extract reads when processing Oracle GoldenGate trails. Extract reads up to 4096 bytes at a time by default. FASTREADS enables larger reads of up to 28K bytes. When data volumes are significant, FASTREADS can result in greater throughput and lower overhead.

Oracle recommends not to use FASTREADS when:

• A trail that is being written with normal 4K I/O.
• A low-volume situation, because there are chances of data corruption.

Note:

FASTREADS only applies when Extract is reading an Oracle GoldenGate trail and does not apply when reading TMF audit trails, since Oracle GoldenGate always reads audit trails with a large block read.

Default

NOFASTREADS

Syntax

FASTREADS