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Profiling General Instance Activity§ Tables with Unused Indexes§ Search for indexes in the“table_io_waits_summary_by_index_usage” wherecount_star = 0§ Should ensure that you have arepresentative time framebefore using this!44Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Profiling General Instance Activity§ host_cache (New in 5.6)§ Exposes hosts cached for DNS§ Counts errors, per error type§ Shows when errors startedhappening§ Compare sum_connect_errorsto max_connect_errors45Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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