Databases

Queries/sec
of connections
connections/sec
avg time per query
cache hit rate
avg io latency
aggregate io
% of query time in io
of locks
of versions (for read consistency)
terminated connects
SQL statements
cache evictions
query errors by type
saturation: plan to execute
- queueing on pool
change in number of executed plans
latency of last checkpoint, and on-disk representation of wall log
- (how much of DB to reply)
checkpoint times

Provide feedback