Oracle

Dbvisit Standby 9 : Do you know the new snapshot feature?

By Mouhamadou Diaw Dbvisit snapshot option is a new feature available starting from version 9.0.06. I have tested this option and in this blog I am describing the tasks I have done. The configuration I am using is following(…)

ARRAYSIZE or ROWPREFETCH in sqlplus?

ARRAYSIZE or ROWPREFETCH in sqlplus? What is the difference between the well known sqlplus-setting arraysize and the new sqlplus-12.2.-feature rowprefetch? In Blog https://www.dbi-services.com/blog/oracle-fasttrue-in-sqlplus-some-thoughts-about-rowprefetch/ I showed a case, which helps to reduce the logical IOs when(…)

Oracle FAST=TRUE in sqlplus? Some thoughts about rowprefetch

During my time as a Consultant working on Tuning Tasks I had the feeling that many people think that there is an Oracle-parameter “FAST=TRUE” to speed up the performance and throughput of the database calls. Unfortunately such a parameter is(…)

Focus on 19c NOW!

Introduction For years, Oracle used the same mechanism for database versioning. A major version, represented by the first number. And then a release number, 1 for the very first edition, and a mature and reliable release 2 for production databases.

dbvisit dbvctl process is terminating abnormally with Error Code: 2044

When applying archive logs on the standby, dbvctl process can terminate abnormally with Error Code: 2044. This can happen in case there are several archive logs with huge size to be applied.

ODA hang/crash due to software raid-check

Oracle Database Appliance (ODA) is by default configured with software raid for Operating System and Oracle Database software file system (2 internal SSD disks). 2 raid devices are configured : md0 and md1.ODA are configured to run raid-check every Sunday(…)

A day of conferences with the Swiss Oracle User Group

Introduction I’m not that excited with all these events arround Oracle technologies (and beyond) but it’s always a good place to learn new things, and maybe the most important, discover new ways of thinking. And regarding this point, I was(…)

Elapsed time of Oracle Parallel Executions are not shown correctly in AWR

As the elapsed time (time it takes for a task from start to end, often called wall-clock time) per execution of parallel queries are not shown correctly in AWR-reports, I thought I setup a testcase to find a way to(…)

Some words about SOUG Day in Lausanne

Today I participate to SOUG Day which takes place in Lausanne at the "Centre Pluriculturel et social d’Ouchy".

odacli create-database error DCS-10802: Insufficient disk space on file system: database

Introduction I was reimaging an X6-2M ODA after various patching troubles, and everything was fine. After several databases created, the next ones could no more be created. DCS-10802: Insufficient disk space on file system: database. Expected free space (MB): {1},(…)