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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 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 | One Comment

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 oracle@vmtestoradg1:/home/oracle/ [RCAT12C] sqh SQL*Plus: Release   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 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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Stéphane Haby

SQL Server Tips: Find sql logins when “windows authentication only” is enabled

By | Database Administration & Monitoring | No Comments

A customer asks me to find all sql logins enabled on servers where windows authentication only is enabled. The goal is to clean sql logins on all servers through the CMS (central management server). In some cases, sql logins are created even if the authentication is set to “Windows authentication only mode”. I think that this query is interesting and I will just share it with you. DECLARE @value INT USE [master] EXEC xp_instance_regread N’HKEY_LOCAL_MACHINE’,…

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Nicolas Jardot

How to read XML database alert log?

By | Database Administration & Monitoring | No Comments

Since Oracle 11g, Oracle maintains two copies of the database’s alertlog in ADR: a flat text file in the sub-directory trace and an XML like in the folder alert. I had a case recently at a customer where the log.xml was moved to another place and compressed for archiving reason. As the regular text file was not containing old data, the goal was to exploit the archived XML -like file. When the file is still located…

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Stéphane Savorgnano

SQL Server 2016 CTP3.0: Stretch Database enhancements

By | Database management, Technology Survey | No Comments

Some months ago, my colleague Nathan explained you the bases of the new Stretch Database functionality via two blogs here and here. With the new SQL Server 2016 CTP 3.0, Stretch Database now includes new features and enhancements that I will sow you in this blog.   In previous versions of SQL Server 2016 CTP 2.x, before to be allowed to Enable Stretch Database, you had to enable the “Remote Data Archive” option for the…

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