Recently I've seen case like:
Why? How to avoid the problem?
Continue reading How to run short ALTER TABLE without long locking concurrent queries
On 16th of July, Kevin Grittner committed patch:
Add support for REFRESH MATERIALIZED VIEW CONCURRENTLY. This allows reads to continue without any blocking while a REFRESH runs. The new data appears atomically as part of transaction commit. Review questioned the Assert that a matview was not a system relation. This will be addressed separately. Reviewed by Hitoshi Harada, Robert Haas, Andres Freund. Merged after review with security patch f3ab5d4.
Continue reading Waiting for 9.4 – Add support for REFRESH MATERIALIZED VIEW CONCURRENTLY.
Recent release of new versions of PostgreSQL suggests that you do reindex of all indexes. But this will take a while, and since we don't actually have ‘REINDEX CONCURRENTLY' command – it's a bit tricky.
So, since I will be doing this on several databases, decided to write a script that will handle the work for me.
Continue reading Concurrent REINDEX of all indexes in database
On 6th of April, Simon Riggs committed patch:
Add DROP INDEX CONCURRENTLY [IF EXISTS], uses ShareUpdateExclusiveLock