May 2017
Beginner
416 pages
10h 37m
English
Content preview from Mastering PostgreSQL 9.6
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Inspecting pg_stat_activity
The first thing I recommend is checking out pg_stat_statements. Answer the following questions:
How many concurrent queries are currently executed on your system?
- Do you see similar types of queries showing up in the query column all the time?
- Do you see queries that have been running for a long time?
- Are there any locks that have not been granted?
- Do you see connections from suspicious hosts?
The pg_stat_activity view should always be checked first because it will give you an idea of what is happening on the system. Of course, graphical monitoring is supposed to give you a first impression of the system. However, at the end of the day, it really boils down to the queries actually running on the server. Therefore, ...
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