Oracle

How to use DBMS_SCHEDULER to improve performance ?

From an application point of view, the oracle scheduler DBMS_SCHEDULER allows to reach best performance by parallelizing your process. Let’s start with the following PL/SQL code inserting in serial several rows from a metadata table to a target table. In(…)

Oracle Standard Edition on AWS ☁ socket arithmetic

By Franck Pachot . Note that I’ve written previously about Oracle Standard Edition 2 licensing before but a few rules change. This is written in May 2020. TL;DR: 4 vCPU count for 1 socket and 2 sockets count(…)

Install & configure a Nagios Server

What is Nagios ? “Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes.” https://www.nagios.org/ In simple words, you can monitor your servers (linux, MSSSQL, etc …) and(…)

Oracle Text : Using and Indexing – the CONTEXT Index

Everybody has already faced performance problem with oracle CLOB columns. The aim of this blog is to show you (always from a real user case) how to use one of Oracle Text Indexes (CONTEXT index) to solve performance problem with(…)

Always free / always up tmux in the Oracle Cloud with KSplice updates

By Franck Pachot . I used to have many VirtualBox VMs on my laptop. But now, most of my labs are in the Cloud. Easy access from everywhere. GCP There’s the Google Cloud free VM which is not(…)

Oracle Database Appliance: which storage capacity to choose?

Introduction If you’re considering ODA for your next platform, you surely already appreciate the simplicity of the offer. 3 models with few options, this is definitely easy to choose from. One of the other benefit is also the hardware support(…)

20c: AWR now stores explain plan predicates

By Franck Pachot . In a previous post https://www.dbi-services.com/blog/awr-dont-store-explain-plan-predicates/ I explained this limitation in gathering filter and access predicates by Statspack and then AWR because of old bugs about reverse parsing of predicates. Oracle listens(…)

Oracle Materialized View Refresh : Fast or Complete ?

In contrary of views, materialized views avoid executing the SQL query for every access by storing the result set of the query. When a master table is modified, the related materialized view becomes stale and a refresh is necessary to(…)

Handle DB-Links after Cloning an Oracle Database

By Clemens Bleile After cloning e.g. a production database into a database for development or testing purposes, the DBA has to make sure that no activities in the cloned database have an impact on data in other production databases. Because(…)

APEX Connect 2020 – Day 1

This year the APEX connect conference goes virtual online, like all other major IT events, due to the pandemic. Unfortunately it spans only over two days with mixed topics around APEX, like JavaScript, PL/SQL and much more. After the welcome(…)