Skip to main content

Naming Conventions of Oracle Database

Naming Conventions of Oracle Database


About Assigning Global Database Names During Installation

The database name input field is used to set the DB_NAME, DB_UNIQUE_NAME, and DB_DOMAIN Oracle initialization parameter values.


The Oracle Database software identifies a database by its global database name. A global database name consists of the database name and database domain. Usually, the database domain is the same as the network domain, but it need not be. The global database name uniquely distinguishes a database from any other database in the same network. You specify the global database name when you create a database during the installation or using the Oracle Database Configuration Assistant.


For example:


sales.us.example.com


Here:


sales.us is the name of the database. The database name, DB_UNIQUE_NAME, portion is a string of no more than 30 characters that can contain alphanumeric characters, underscore (_), dollar sign ($), and pound sign (#) but must begin with an alphabetic character. No other special characters are permitted in a database name.


sales.us is also the DB_NAME. The DB_NAME initialization parameter specifies a database identifier of up to eight characters.


example.com is the database domain in which the database is located. In this example, the database domain equals the network domain. Together, the database name and the database domain make the global database name unique. The domain portion is a string of no more than 128 characters that can contain alphanumeric characters, underscore (_), and pound sign (#). The DB_DOMAIN initialization parameter specifies the database domain name.


However, the DB_NAME parameter need not necessarily be the first eight characters of DB_UNIQUE_NAME.


The DB_NAME parameter and the DB_DOMAIN parameter combine to create the global database name value.


The system identifier (SID) identifies a specific database instance. The SID uniquely distinguishes the instance from any other instance on the same computer. Each database instance requires a unique SID and database name. In most cases, the SID equals the database name portion of the global database name.


link : About Assigning Global Database Names During Installation

Labels:

Comments

Post a Comment

Popular posts from this blog

Upgrading Issue for RHEL 7 to 8 With Leapp

Overview The Leapp utility is a framework for updating and upgrading operating systems as well as applications. The operations of this utility consist of two phases 1. the preupgrade Phase – that chack the upgrade possibilities and 2. the actual upgrade phase – that map packages between previous and current versions of the software packages. Issue – 01: After running ‘ sudo leapp preupgrade ‘ sometimes you find the below issue in ‘ /var/log/leapp/leapp-report.txt ‘. Detail: Risk Factor: high (inhibitor) Title: Leapp detected loaded kernel drivers which have been removed in RHEL 8. Upgrade cannot proceed. Summary: Support for the following RHEL 7 device drivers has been removed in RHEL 8: – pata_acpi Key: f08a07da902958defa4f5c2699fae9ec2eb67c5b Remediation: 1. Disable detected kernel drivers in order to proceed with the upgrade process using the rmmod or modprobe -r . rmmod – Simple program to remove a module from the Linux Kernel modprobe – Add and remove modules from the Linux Ke
Post a Comment
Read more

Upgrading Oracle Linux 6 to 7

Overview It is possible to upgrade an Oracle Linux 6 system to Oracle Linux 7.6 under the following conditions: The system meets the minimum installation requirements for Oracle Linux 7 as described in Chapter 1, System Requirements and Limits. The Oracle Linux 6 system has been completely updated from the ol6_x86_64_latest channel or ol6_latest repository. UEK R3 or UEK R4 has been installed on the system to be upgraded and is the default boot kernel. Upgrading from UEK R2 is not supported. Note that the system is upgraded to use the UEK R5 release provided with Oracle Linux 7.6. Upgrading is supported only for systems that are installed with the Minimal Install base environment. If additional packages are installed from an alternative repository or channel, upgrade might fail or the resulting upgrade might not function as expected. reference: https://docs.oracle.com/en/operating-systems/oracle-linux/7/relnotes7.6/ol7-install.html#ol7-upgrade-ol6 Verifying the system before Upgrade: #
Post a Comment
Read more

Software-only Installation of oracle Database 21c on RHEL 8

Overview Oracle Database 21c is a multi-model database that provides full support for relational and non-relational data, such as JSON, XML, text, spatial and graph data. There are lots of new features available in this new release like partitioned hybrid tables, encryption capabilities in the built-in data dictionary, statistics-only queries, and many more. It also enables Oracle's Autonomous Database Cloud Services. This article describes the installation of Oracle Database 21c 64-bit on Red Hat 8 64-bit. Lab Environment Particulars                                     Database Info --------------                                            ------------------------------------------------------- OS Release                                     Red Hat Enterprise Linux release 8.4 (Ootpa) Kernel                                              4.18.0-425.10.1.el8_7.x86_64 IP Address                                     1 92.168.0.10 Host Name                                  oemsrv User Na
Post a Comment
Read more