Creating archived redolog-files in group dba instead of oinstall
Since Oracle 11g files created by the database belong by default to the Linux group oinstall. Changing the default group after creating the central inventory is difficult. In this Blog I want to show...
View Articleodacli create-database error DCS-10802: Insufficient disk space on file...
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...
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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”. After a coffee and a welcome speech by Yann Neushaus, Ludovico Caldara and Flora Barriele,...
View ArticleA 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...
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First day at DOAG 2019 Conference
This year I have the opportunity to take place at one of the most popular Oracle conferences, the DOAG. In the meantime, I have the chance to give a talk on Thursday about Docker containers. Yes!...
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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...
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Dbvisit Standby 9 : Do you know the new snapshot feature?
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...
View ArticleDbvisit 9: Adding datafiles and or tempfiles
One question I was asking is if the standby_file_management parameter is relevant in a Dbvisit environment with Oracle Standard Edition. I did some tests and I show here what I did. We suppose that the...
View ArticleMake Oracle database simple again!
Introduction Let’s have a look at how to make Oracle database as simple as it was before. Oracle database is a great piece of software, yes it’s quite expensive, but it’s still the reference and most...
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ROLLBACK TO SAVEPOINT;
By Franck Pachot . I love databases and, rather than trying to compare and rank them, I like to understand their difference. Sometimes, you make a mistake and encounter an error. Let’s take the...
View ArticleShould I go for ODA 19.5 or should I wait until 19.6?
Introduction As you may know, Oracle Database 19c is available for new (X8-2) or older Oracle Database Appliances since several weeks. Current version is 19.5. But when you go to the official ODA...
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NVMe the afterburer for your database
Over 1 million IOPS (@8 KByte) and more than 26 GByte/s (@1MByte): Read more to see all impressive benchmark figures from a server with 14 NVMe drives and read why this is still not the best you could...
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Running SQL Server on the Oracle Free tier
By Franck Pachot The Oracle Cloud is not only for Oracle Database. You can create a VM running Oracle Linux with full root access to it, even in the free tier: a free VM that will be always up, never...
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How SQL Server MVCC compares to Oracle and PostgreSQL
By Franck Pachot . Microsoft SQL Server has implemented MVCC in 2005, which has been proven to be the best approach for transaction isolation (the I in ACID) in OLTP. But are you sure that writers do...
View Articleodacli create-database extremely slow on ODA X8-2 with 19.5
Introduction ODA X8-2, in the S, M or HA flavour, is the new database appliance from Oracle. But as a brand new product, you can experience troubles due to the lack of maturity. This time, it concerns...
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SQLNET.EXPIRE_TIME and ENABLE=BROKEN
By Franck Pachot . Those parameters, SQLNET.EXPIRE_TIME in sqlnet.ora and ENABLE=BROKEN in a connection description exist for a long time but may have changed in behavior. They are both related to...
View ArticleOracle 20c : The new PREPARE DATABASE FOR DATA GUARD
As you may know, Oracle 20c is in the cloud with new features. The one I have tested is the PREPARE DATABASE FOR DATA GUARD. This command configures a database for use as a primary database in a Data...
View ArticleOracle 20c Data Guard : Validating a Fast Start Failover Configuration
In Oracle 20c, we can now validate a Fast Start Failover configuration with the new command VALIDATE FAST_START FAILOVER. This command will help identifying issues in the configuration. I tested this...
View ArticleSpeed up datapump export for migrating big databases
Introduction Big Oracle databases (several TB) are still tough to migrate to another version on a new server. For most of them, you’ll probably use RMAN restore or Data Guard, but datapump is always a...
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Oracle 20c SQL Macros: a scalar example to join agility and performance
By Franck Pachot . Let’s say you have a PEOPLE table with FIRST_NAME and LAST_NAME and you want, in many places of your application, to display the full name. Usually my name will be displayed as...
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