Tuning Global Cache - Expert Oracle RAC Performance Diagnostics and Tuning - page 438

Figure 13-14. Global cache coherency

The top activity chart illustrated in Figure 13-15 illustrates the top areas of contention, for example, the chart in
Figure 13-15 illustrates concurrency and high commit times. Further details into these specific areas can be obtained
by highlighting the category and double clicking them.

Figure 13-15. Top activity

■ Note Discussions on raC-related wait events can be found in Chapter 17.