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Tag: transactions

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Here you can find all blog posts about the Tag: transactions. You can go back to all blog posts or take a look into our other categories & tags.

Be prepared for prepared transactions

by Laurenz Albe | 12.2018
Prepared transactions are disabled in PostgreSQL by default, since the parameter max_prepared_transactions has the default value 0. You don't need […]

What's in an xmax?

by Laurenz Albe | 04.2018
xmax is a PostgreSQL system column that is used to implement Multiversion Concurrency Control (MVCC). The documentation is somewhat terse: […]

idle_in_transaction_session_timeout: Terminating idle transactions in PostgreSQL

by Hans-Jürgen Schönig | 04.2018
When running PostgreSQL on a production system, it might happen that you are facing table bloat. As you might know […]

Improving transaction latency by moving indexes to faster media

by CYBERTEC Guest | 03.2018
By Kaarel Moppel - Improve transaction latency and consequently performance - The topic of transaction performance is as relevant as […]

New features for sequences: gains and pitfalls

by Laurenz Albe | 02.2018
About sequences Sequences are used to generate artificial numeric primary key columns for tables. A sequence provides a “new ID” […]

walbouncer: Filtering the transaction log

by Hans-Jürgen Schönig | 10.2014
Up until now, it was only possible to replicate entire database instances from one node to the other. A standby […]

Bypassing the transaction log

by Hans-Jürgen Schönig | 04.2014
Referring to my previous blog post about the amount of xlog written by PostgreSQL I wanted to clarify what I […]

Monitoring: Keeping an eye on old transactions

by Hans-Jürgen Schönig | 09.2013
To handle transactions PostgreSQL uses a mechanism called MVCC (Multi Version Concurrency Control). The core idea of this machinery is […]

Transactional DDLs – a message to non-PostgreSQL users

by Hans-Jürgen Schönig | 06.2013
Sometimes it is astonishing to see which basic functionality commercial vendors lack. One of the things that strikes me most […]
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