1. System Overview
  2. What's New in Oracle Exadata Database Machine
  3. New Features for Oracle Exadata System Software 24ai
  4. What's New in Oracle Exadata System Software Release 24.1
  5. Exadata Cache Observability

2.1.5 Exadata Cache Observability

Oracle Exadata System Software release 24.1.0 introduces the Exadata Storage Cache Statistics utility (ecstat), which provides real-time statistics about Exadata Smart Flash Cache.

The ecstat utility improves cache observability on each Exadata storage server and enables administrators to understand:

  • What is the balance of I/O operations across the main storage and Exadata Smart Flash Cache?

  • How are different types of I/O operations (small reads, large reads, small writes, and large writes) serviced in the storage server?

  • What is the I/O throughput, in I/Os per second (IOPS) and megabytes per second (MB/s), handled by main storage and Exadata Smart Flash Cache?

  • Is Exadata Smart Flash Cache undersized or performing acceptably?

The ecstat utility is conceptually similar to the Linux iostat utility, providing a periodic snapshot of I/O performance for each storage and cache device. Storage administrators can run ecstat on demand to understand real-time I/O performance. Additionally, Exawatcher includes ecstat output in its log files.

Parent topic: What's New in Oracle Exadata System Software Release 24.1