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Perform the following steps to install and configure Oracle Database XE using RPM packages.
Before attempting to install Oracle Database XE 18c, uninstall any existing Oracle Database XE or database with the SID An Oracle Database XE installation will consume around 9 gigabytes of disk space under
XE from the target system.
If you set up NFS, then you can download and unzip Oracle on the Mac, into a directory you share using NFS (www.oracle.com, Downloads, look for Database 10g for Linux, 32 bit).3 While it's downloading, it might be a good time to install your favourite Firefox bookmark synchronisation service - I use Foxmarks. Then within CentOS you can simply cd to that directory and execute. Oracle VM VirtualBox Extension Pack. Free for personal, educational or evaluation use under the terms of the VirtualBox Personal Use and Evaluation License on Windows, Mac.
/opt
![]() /opt/oracle . This disk partition is the defined Oracle Base where the software and database will reside.
Note:
The Oracle Database XE installation does not support usage of symbolic links (symlink) for that disk.
Installing Oracle Database XE RPM
The Database Preinstallation RPM automatically creates Oracle installation owner and groups and sets up other kernel configuration settings as required for Oracle installations. If you plan to use job-role separation, then create the extended set of database users and groups depending on your requirements. Check the RPM log file to review the system configuration changes.
For example, review this file for latest changes:
/var/log/oracle-database-preinstall-18c/results/orakernel.log .
The installation of Oracle Database software is now complete.
After successful installation, you can delete the downloaded RPM files, for example:
Creating and Configuring an Oracle Database
The configuration script creates a container database (
XE ) with one pluggable database (XEPDB1 ) and configures the listener at the default port (1521) and Enterprise Manager Express on port 5500.
You can modify the configuration parameters by editing the The parameters set in this file are explained in more details in the silent mode installation procedure: Performing a Silent Installation.
/etc/sysconfig/oracle—xe–18c.conf file.
To create the Oracle XE database with the default settings, perform the following steps:
Configuration, Database Files and Logs Location
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Table 5-1 Configuration, Database Files and Logs Location
Connecting Locally using OS Authentication
When you install Oracle Database XE, your Windows user is automatically added to the
ORA_DBA operating system group, which grants you the SYSDBA privileges. You can use the following commands to connect to the database. In the commands, replace '<oracle_home>' with the path to your Oracle Home; see Table 5-1 for more details about the Oracle Home:
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These commands connect you to the root container
CDB$ROOT of the multitenant database (CDB) as database user SYS . This method of connecting to the database works even if the Net Services listener is not running.
The Net Services Listener and Default Services
The Net Services database listener for your XE database allows you to connect to the database over TCP/IP from the same machine or other machines on the network. The configuration of the Listener can be viewed using the following commands run from the command prompt:
The output from the lsnrctl command shows values of a number of important parameters:
You specify a service when connecting to the database through the listener. The default services created by Oracle Database XE are XE and
XEPDB1 . The XE service connects you to the root container of the database (CDB$ROOT ) and the XEPDB1 service connects you to the default pluggable database (XEPDB1 ) created at the installation time. For each new pluggable database (PDB) in the database, there will be a new default service created with the same name as the PDB.
Note:
If the Oracle Database XE instance is shut down, the lsnrctl status command does not show any services you can connect to.
Connecting to Oracle Database Using Easy Connect Naming Method
You can connect to the database using the following Easy Connect strings:
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XEPDB1 is the service name defined for the first PDB created by default. You can replace XEPDB1 with the name of another PDB you want to connect to.
Specifying the port is optional when the listener is setup with the default port
1521 . You must specify the port number if you use another port.
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Connection strings for local connections were provided on the final screen of the install. If you are connecting from a remote computer, you need to provide the hostname (where XE is installed) instead of localhost. https://yolals.weebly.com/blog/download-windows-store-app-on-mac.
Please note that, Net Services database listener must be running on the database host on the specified port for the connections to succeed.
For example, you can connect to the root container of the database from a client computer with SQL*Plus using the following commands:
You can connect to the default pluggable database
XEPDB1 using the following commands:
Replace
dbhost.example.com with your database host name. If needed, replace 1521 with the port number the listener listens on. You can replace XEPDB1 with the name of another PDB you want to connect to.
To shorten connect strings or to avoid hardcoding host name and port in application code and DBA scripts, you can define an alias for the connect string in the configuration file
<oracle_home>networkadmintnsnames.ora on database clients. See Configuring the Local Naming Method for more details.
See Also:
Oracle Xe Download For Mac
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