Structure of Automation
Tuile
┌─────────────┐ ┌──────────┐
│Lansdcape │ 1:N │Type │ 1:N
│(déploiement)├──────►│(playbook)├───┐
└─────────────┘ └──────────┘ │
│
┌──────────────────────────────────┘
│
│ ┌────────┐ ┌───────────────────┐
│ │Function│ 1:N │Component │
└►│(rôle) ├──────►│(task file du rôle)│
└────────┘ └───────────────────┘
collections contain various modules and Ansible Roles that collectively (intentional use here) serve the end user and must (emphasis on this word) collectively work together, be tested together and be released together.
...collectively work together, be tested together and be released together.
components
== sous-éléments d'un rôle (les 'functions'), ex: config SSH, config NetworkManager etc.
functions
== rôle Ansible, ex: vm provisioning, params OS de base, installation Java etc.
types
== un hôte ne peut avoir qu'un 'type'; ex: serveur de BD, front-end NGinx etc.
landscape
== un déploiement
To mount the database, the instance obtains the names of the database control files specified in the CONTROL_FILES initialization parameter and opens the files. Oracle Database reads the control files to find the names of the data files and the online redo log files that it will attempt to access when opening the database.
question: Une instance a accès aux tables etc. Plusieurs instances peuvent avoir accès aux même tables.
Non-cluster Oracle databases have a one-to-one relationship between the Oracle database and the instance.
Server Control Utility (SRVCTL)
SRVCTL is a command-line interface that you can use to manage an Oracle RAC database from a single point. You can use SRVCTL to start and stop the database and instances and to delete or move instances and services. You can also use SRVCTL to manage configuration information, Oracle Real Application Clusters One Node (Oracle RAC One Node), Oracle Clusterware, and Oracle ASM.
Oracle DBCA
Oracle DBCA: The recommended utility for creating and initially configuring Oracle RAC, Oracle RAC One Node, and Oracle noncluster databases.
Recovery Manager Documentation Roadmap
LA liste de lectures pour RMAN etc.
Begin by reading "Getting Started with RMAN". This brief chapter, which explains the most basic RMAN techniques, may be adequate for your purposes. For a more comprehensive explanation of how to implement a backup and recovery strategy with RMAN, read the chapters in the following order (optional chapters are not listed
A stamp that defines a committed version of a database at a point in time. Oracle assigns every committed transaction a unique SCN.
system change number (SCN)
DISK channel (used to perform disk I/O) or an SBT channel (used to perform I/O through a third-party media management software).
en fait, il n'existe que 2 type de 'channel' (des destination pour les fichiers de backup) : 1. disque 2. ruban magnétique