Oracle

19c serverless logon trigger

By Franck Pachot . I thought I already blogged about this but can’t find it. So here it is, with a funny title. I like to rename oracle features by their user point of view (they are usually named(…)

Oracle 21c: Blockchain Tables

Oracle Blockchain Tables With Oracle Database 20c/21c the new feature Oracle Blockchain Tables has been introduced. Blockchain Tables enable Oracle Database users to create tamper-resistant data management without distributing a ledger across multiple parties. Database security can be improved by(…)

How to quickly download the new bunch of 21c Oracle Database documentation?

Last month, Oracle released its new 21c version of the database documentation. At that time, I was looking for a quick mean to get all the books of this so-called 21c Innovation Release. I could remember I used a(…)

Optimizer Statistics Gathering – pending and history

By Franck Pachot . This was initially posted to CERN Database blog on Wednesday, 12 September 2018 where it seems to be lost. Here is a copy thanks to web.archive.org Demo table I create a(…)

Password rolling change before Oracle 21c

By Franck Pachot . You may have read about Gradual Password Rollover usage from Mouhamadou Diaw and about some internals from Rodrigo Jorge. But it works only on 21c which is(…)

Oracle SPD status on two learning paths

By Franck Pachot . I have written a lot about SQL Plan Directives that appeared in 12c. They were used by default and, because of some side effects at the time of 12cR1 with legacy(…)

NTP is not working for ODA new deployment (reimage) in version 19.8?

Having recently reimaged and patched several ODA in version 19.8 and 19.9, I could see an issue with NTP. During my troubleshooting I could determine the root cause and find appropriate solution. Through this blog I would like to share(…)

Efficiently query DBA_EXTENTS for FILE_ID / BLOCK_ID

By Franck Pachot . This was initially posted to CERN Database blog on Thursday, 27 September 2018 where it seems to be lost. Here is a copy thanks to web.archive.org Did you ever try to(…)

Oracle write consistency bug and multi-thread de-queuing

By Franck Pachot . This was initially posted on CERN Database blog where it seems to be lost. Here is a copy thanks to web.archive.org Additional notes: – I’ve tested and got the(…)

Installing MySQL Database Service (MDS)

On a previous blog post, we saw how to create an account on the Oracle OCI using the Oracle Cloud Free Tier offer and then how to(…)