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Marc Wagner

Dbvisit Standby Archive Log Daemon

By | Database Administration & Monitoring, Oracle | No Comments

Dbvisit Standby version 8 comes with a nice feature, a daemon, which gives the benefit to send and apply the archive log automatically in the background. Bypassing the system scheduling, the daemon will facilitate customer RPO (Recovery Point Objective) and RTO (Recovery Time Objective) fine tuning. Monitoring to apply logs to the Standby only when needed, will also optimize use of resources. Originally available for the Linux based environments, the feature has been made available…

 
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David Hueber

ODA 12.2.1.2.0: Some curious password management rules

By | Database Administration & Monitoring, Hardware & Storage | One Comment

While deploying an ODA based on the DCS stack (odacli), it is mandatory to provide a “master” password at appliance creation. The web GUI provides for that a small tooltip which describes the rules applied on password management. However it looks like there is some flexibility with those rules. Lets try to check this out with some basics tests.  

 
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David Hueber

ODA X7-2S/M 12.2.1.2.0: update-repository fails after re-image

By | Database Administration & Monitoring, Hardware & Storage | 5 Comments

While playing with a brand new ODA X7-2M, I faced a strange behaviour after re-imaging the ODA with the latest version 12.2.1.2.0. Basically after re-imaging and doing the configure-firstnet the next step is to import the GI clone in the repository before creating the appliance. Unfortunately this command fails with an error DCS-10001:Internal error encountered: Fail to start hand shake to localhost:7070. Why not having a look on how to fix it…  

 
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David Hueber

ODA 12.2.1.2.0 – VLAN Management

By | Database Administration & Monitoring | No Comments

Virtual Local Area Network (VLAN) have become since several years a standard in enterprise class networks. Most enterprises are now segregating their network, especially for security reasons, between server and user or prod and test or applications and backup and aso. In the new release of ODA we finally get the support for VLAN on the bare metal platform. This article will briefly demonstrate how these are managed using ODAADMCLI.  

 
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Marc Wagner

RMAN debugging during catalog import

By | Database management, Oracle | No Comments

In this post I would like to share how I have been able to troubleshoot and solve a catalog import issue using RMAN debug function. As we can see, the error message provided by RMAN is not very helpful. oracle@vmtestoradg1:/home/oracle/ [RCAT12C] rman catalog rcat/manager Recovery Manager: Release 12.2.0.1.0 connected to recovery catalog database RMAN> import catalog rcat/manager@RCAT11G; Starting import catalog at 05-JAN-2018 14:11:45 connected to source recovery catalog database RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE…

 
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Marc Wagner

ORACLE 11g to 12c RMAN catalog migration

By | Database management, Oracle | 2 Comments

This is a small migration demo of a 11g catalog (RCAT11G) to a new 12c catalog (RCAT12c). Demo databases environments have been easily managed thanks to DBI DMK tool. oracle@vmreforadg01:/home/oracle/ [RCAT11G] sqh SQL*Plus: Release 11.2.0.4.0 oracle@vmtestoradg1:/home/oracle/ [RCAT12C] sqh SQL*Plus: Release 12.2.0.1.0   Current configuration Displaying the list of databases registered in the RCAT11g catalog. SQL> select instance_name from v$instance; INSTANCE_NAME —————- RCAT11G SQL> select * from rcat.rc_database;     DB_KEY  DBINC_KEY       DBID NAME     RESETLOGS_CHANGE# RESETLOGS ———-…

 
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Franck Pachot

Am I a DBA 3.0 or just an SQL*DBA?

By | Oracle | 2 Comments

There are currently a lot of new buzz words and re-namings which suggest that our DBA role is changing, most of them escorted with a #cloud hashtag. Oracle Technology Network is now called Oracle Developer Community. Larry Ellison announced the database that does not need to be operated by humans. And people talking about the death of DBA, about the future of DBA, about DBA 3.0,… Those are all generalizations and universal statements, and I…

 
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David Hueber

ODA – 32GB template but got a database with 16GB SGA???

By | Database Administration & Monitoring, Database management, Hardware & Storage, Operation systems | No Comments

I got an interesting question today from a customer which created a database on ODA. He selected the template odb-04 which shows 32GB Memory but got a database with a 16GB SGA… Is it due to the PGA size, a limitation in the system, the huge pages usage which is reached or even a bug?  

 
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Saïd Mendi

MySQL 8.0.0 DMR – First impression

By | Database management | One Comment

Last week (09/12/2016) was announced the new MySQL 8.0.0 DMR (Development Milestone Release) It is now available for download at dev.mysql.com I downloaded and installed it Following are my first impression on some new features First of all, when you remember the size of earlier versions, it is more & more gluttonous, see below mysql-5.0.96-linux-x86_64-glibc23.tar.gz    121.2M mysql-5.1.72-linux-x86_64-glibc23.tar.gz    127.8M mysql-5.5.52-linux2.6-x86_64.tar.gz            177.2M mysql-5.6.33-linux-glibc2.5-x86_64.tar.gz    299.7M mysql-5.7.15-linux-glibc2.5-x86_64.tar.gz   611.8M mysql-8.0.0-dmr-linux-glibc2.12-x86_64.tar.gz is around 1Gb and uncompressed 3.6Gb (Oups…) At…

 
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Pierre Ochsenbein

DBA essentials workshop with release Oracle 12c is Available

By | Database Administration & Monitoring, Database management | No Comments

It’s with pleasure to announced dbi services have upgrade the infrastructure for Oracle DBA essentials workshop. We have migrate the release of Oracle 11g R2 to the latest version Oracle 12c features and install the last PSU (April 2016). During this course you understand different topics: Understand the Oracle database architecture Install and Manage Oracle database Administer Oracle databases with dbi expert certified OCM or ACE director For more information about the workshop, please click…

 
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