February 2017
Intermediate to advanced
536 pages
28h 47m
English
Content preview from PostgreSQL High Availability Cookbook - Second Edition
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Deciphering database locks
It's not uncommon for various elements of the database to block each other. Queries can lock shared resources, system maintenance can temporarily prevent a transaction from committing; the list is endless. As a result, a critical aspect of troubleshooting a PostgreSQL system is tracking down blocked systems, and what might be preventing normal operation.
There are two very powerful ways to decipher locks within PostgreSQL in the pg_locks view and the new PostgreSQL 9.6 pg_blocking_pids function. Let's see why these approaches are so useful.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.