By William Sescu If you think that Flashback Drop feature just brings back your table, then this is only half of the story. It does much more than that. Besides undropping the table, it also brings back your constraints, your indexes, your trigger, your grants and the statistics as well. The ugly part is, that the flashback drop brings back…
By William Sescu When I don’t need I feature, I don’t turn it on, or do not use it because it reduces the possibility to run into issues. Most of the times this is true, however, during the preparation for an RMAN workshop, the RMAN list failure command showed me the following dictionary issue. RMAN> list failure; using target database…
By Franck Pachot . Do you like DBCA to create a database from command line, with -silent -createDatabase? On a simple command line you can provision a database, with oratab, tnsnames.ora directory creation and any setting you want. And you can even call a custom script to customize further. But if you want to put it in Data Guard, you…
By William Sescu Relying to much on the RMAN Data Recovery Advisor is not always the best idea. In a lot of situations, it tells you the right things, however, sometimes it tells you not the optimal things, and sometimes, RMAN list failure does not show any failure at all, even if there is one. So … let’s simulate quickly…
By William Sescu There are some articles floating around how to prevent a license violation with Active Data Guard. Some of them related to an underscore parameter “_query_on_physical” and some of them related to a startup trigger. Both of them have advantages and disadvantages. E.g. regarding the “_query_on_physical” I can’t find any MOS Note about it, and I don’t know…
Last week in the first part of this blog we have seen a short introduction how to setup an Oracle Infrastructure with Vagrant and Ansible. Remember all the files for this example are available here https://github.com/nkadbi/oracle-db-12c-vagrant-ansible Get the example code: git clone https://github.com/nkadbi/oracle-db-12c-vagrant-ansible If you have prepared your environment with Ansible, Vagrant and Oracle Virtual Box installed – and provided…
By using Vagrant to manage your Virtual Machines and Ansible for configuration management and provisioning you can easily automate the setup of your whole test environment in a standardized way. If you have never heard about Ansible and Vagrant I try to give you an idea with the following very short summary. There is a lot of good information available…
By William Sescu I would like to make my DataGuard environment more secure, by eliminating the typing of “connect sys/Manager1” for my DGMGRL commands. Especially the ones, that I have in my scripts. For example: oracle@dbidg01:/home/oracle/ [DBIT122] dgmgrl <<-EOF > connect sys/Manager1 > show configuration verbose; > EOF or something like that: oracle@dbidg01:/u01/app/oracle/local/dg/ [DBIT122] cat show_config.dg connect sys/Manager1; show configuration;…
By William Sescu I am not a big fan of having passwords in clear text laying around. This applies not only to application servers, but also for my Data Guard observer. I do have a script for starting the observer that is reading a config file dgobserver.cfg, and this file contains the Username, Passwords and the Connectstring to my Primary…
By Franck Pachot . In a previous post I explained how the AWR views have changed between 12.1.0.1 and 12.1.0.2 and now in 12.2.0.1 they have changed again. This is a good illustration of multitenant object link usage. What’s new in 12cR2 is the ability to run AWR snapshots at CDB or PDB level. I really think that it makes…
By Franck Pachot . In a previous post I explained how to use transportable tablespace from a standby database. Here I’m showing an alternative where you can transport from a backup instead of a standby database. RMAN can do that since 10gR2. Transportable Tablespace is a beautiful feature: the performance of physical copy and the flexibility of logical export/import. But…
By Franck Pachot . Here it is. The multitenant book is out for sale… One year ago, at DOAG2015, Vit Spinka came to me with this idea: with Anton Els they planned to write a book on multitenant and proposed me to be a co-author. I was already quite busy at that time and my short-term plan was to prepare…
