10.2.4 Network Resource Management

Network Resource Management automatically and transparently prioritizes critical database network messages through the InfiniBand fabric ensuring fast response times for latency critical operations. Prioritization is implemented in the database, database InfiniBand adapters, Oracle Exadata Storage Server Software, Exadata storage InfiniBand adapters, and InfiniBand switches to ensure prioritization happens through the entire InfiniBand fabric.

Latency sensitive messages such as Oracle RAC Cache Fusion messages are prioritized over batch, reporting, and backup messages. Log file write operations are given the highest priority to ensure low latency for transaction processing.

This feature works in conjunction with CPU and I/O Resource Management to help ensure high and predictable performance in consolidated environments. For example, given an online transaction processing (OLTP) workload, commit latency is determined by log write latency. This feature enables log writer process (LGWR) network transfer to be prioritized over other database traffic in the same or other databases, such as backups or reporting.

This feature is enabled by default, and requires no configuration or management.

Minimum software: Oracle Exadata Storage Server Software release 11.2.3.3 running Oracle Database 11g Release 2 (11.2) release 11.2.0.4, or Oracle Database 12c Release 1 (12.1) release 12.1.0.1, and switch firmware release 2.1.3-4