All articles

Postgres vs. Oracle access paths IX – Tid Scan

By Franck Pachot . In the previous post we have seen how Postgres and Oracle finds the table row from the index entry. It uses the TID / ROWID. I’ll focus on this access path(…)

Improving Statspack Experience

By Franck Pachot . I've published a few month ago an article in the UKOUG OracleScene magazine on Improving Statspack Experience: quick setup script, changing settings, filling Idle Events,etc. In the article, I used dbms_job to(…)

Bequeath connect to PDB: set container in logon trigger?

By Franck Pachot . There are little changes when you go to multitenant architecture and one of them is that you must connect with a service name. You cannot connect directly to a PDB with a beaqueath (aka local) connection.

Get trace file from server to client

By Franck Pachot . The old way to get a user dump trace file, for sql_trace (10046), Optimizer compilation trace (10053), lock trace (10704), Optimizer execution trace (10507),... is to go to the server trace directory. But if you don't(…)

Postgres vs. Oracle access paths VIII – Index Scan and Filter

By Franck Pachot . In the previous post we have seen a nice optimization to lower the consequences of bad correlation between the index and the table physical order: a bitmap, which may include false positives(…)

Alfresco – Unable to see the content of folders with ‘+’ in the name

As you might now if you are following our blogs (see this one for example), we are using Alfresco Community Edition internally for some years now and we also have a few(…)

Replicating specific tables in PostgreSQL 10 Beta with mimeo

By Mouhamadou Diaw In this blog I am going to test the extension mimeo with PostgreSQL 10 beta. Mimeo is a replication extension for copying specific tables in one of several specialized ways from any number of source databases to(…)

ODA X6 2S 2M 2L HA: Small Medium Large and High Availability

By Franck Pachot . There are 4 models of Oracle Database Appliance with the new ODA X6 which is for the moment the latest ODA hardware version. One is similar to the(…)

WebLogic – Cannot register for disconnect events on local server

When working with WebLogic, there will probably be a moment when you will ask yourself: damn, what is wrong? Nowadays, software are so complex that it is kind of easy to introduce bugs/non-wanted behaviors in them… In this blog, I(…)

OUD 11.1.2.3 – How to recover a lost entry in a replicated OUD environment

By William Sescu . By accident, it could happen that someone dropped an OUD entry in your replicated environment and of course, the entry is deleted on all replicas as well. And besides that, you got no logical ldif(…)