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Oracle non-linguistic varchar2 columns to order by without sorting

By Franck Pachot . Sorting data is an expensive operation and many queries declare an ORDER BY. To avoid the sort operation you can build an index as it maintains a sorted structure. This helps with Top-N queries as(…)

Publishing a PowerShell script to AWS Lambda

I've done some Lambda functions with Python in the past and it was quite easy to publish that to Lambda (by just uploading a zip file with all my code and dependencies). You might ask yourself(…)

Documentum Upgrade – Missing DARs after upgrade

As part of the same migration & upgrade project I talked about in previous blogs already (corrupt lockbox, duplicate objects & wrong target_server), I have seen a very(…)

No{Join,GroupBy}SQL – Analytic Views for BI

By Franck Pachot . Advocates of NoSQL can query their structures without having to read a data model first. And without writing long table join clauses. They store and query a hierarchical structure without the need to follow relationships,(…)

Control-M/EM Put a job already ordered in dummy mode

Hi everybody. Today we will see how to put a job in dummy mode on the monitoring part Introduction In some case you want, or you will be asked to bypass a treatment. For that, you can put the job(…)

Control-M/EM Cyclic job interval less than 1 min

Introduction By default, the minimal execution’s interval of a cyclic job is 1 minute (with the rerun every 0 sec option it will loop instantaneously). But what happens when you need to rerun it in a interval between 0 and(…)

Oracle 12c – global partial index

By Franck Pachot . We have an incredible number of possibilities with Oracle. Yes, an index can be global (indexing many partitions without having to be partitioned itself on the same key) and partial (skipping some of the table(…)

Oracle 12c – reorg and split table with clustering

By Franck Pachot . In this series of small examples on recent features, I have imported in a previous post, the statistics of covid-19 per day and per countries. This is typical of data that(…)

Oracle 12c – peak detection with MATCH_RECOGNIZE

By Franck Pachot . This post is part of a series of small examples of recent features. I’m running this in the Oracle 20c preview in the Oracle Cloud. I’ll show a very basic example of “Row Pattern Recognition”(…)

Oracle 12c – pre-built join index

By Franck Pachot . This post is part of a series of small examples of recent features. I’m running this in the Oracle 20c preview in the Oracle Cloud. I have created a few tables in the(…)