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DynamoDB PartiQL – part II: SELECT
By Franck Pachot . In the previous post I insertd a few rows in a Demo table using the SQL-like new API on DynamoDB. I checked my items with a SELECT but was limited in the ORDER BY clause. Here is the...
View ArticleDocumentum – IndexAgent can’t start in normal mode
Everybody familiar with Documentum knows that just starting the JBoss/WildFly hosting an IndexAgent isn’t really enough to have the indexing working: the IndexAgent must be started from the UI (or via...
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DynamoDB Scan (and why 128.5 RCU?)
By Franck Pachot . In the previous post I described the PartiSQL SELECT for DynamoDB and mentioned that a SELECT without a WHERE clause on the partition key may result in a Scan, but the result is...
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Google Spanner – SQL compatibility
By Franck Pachot . I have posted, a long time ago, about Google Spanner (inserting data and no decimal numeric data types) but many things have changed in this area. There is now a NUMERIC data type...
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Google Cloud SQL Insights: ASH, plans and statement tagging
By Franck Pachot . Looking at database performance has always been necessary to optimize the response time or throughput, but when it comes to public cloud where you are charged by resource usage,...
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Grafana, SQL and IN() list for multi-value variable
By Franck Pachot . I’ve recently looked at Grafana. Pros: it is really nice, I mean aesthetically. If you want to build a dashboard for your boss, or put it on a large screen in the open space, that’s...
View ArticleSELECT FROM DUAL : Oracle Performance And Tuning
The DUAL table is automatically created by Oracle and contains one column (DUMMY) and one row (x value). This table is often used by SQL developer in PL/SQL code (Package, Functions, Trigger) to...
View ArticleParallelize your Oracle INSERT with DBMS_PARALLEL_EXECUTE
One of the challenge of all PL/SQL developers is to simulate the Production activity in a Non Prod. environment like for example different Insert executed by several sessions. Different tools exist...
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Oracle Partition and Performance of massive/concurrent Inserts
For a customer, I had to check if partitioning improves performance of massive and concurrent inserts. The goal is to execute several Inserts in parallel via dbms_parallel_execute package (my previous...
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New Features 23c, Overview (in extracts):
In this blog I want to introduce some of the new features of the Oracle 23c developer edition. It will be only a selection of some of the main features. It is not the intention to give you a thorough...
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