Successful Configuration of Oracle Enterprise Manager 13 Revision 5 Installation with Oracle 19C in Oracle Linux 77

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Oracle Enterprise Manager (OEM) is a powerful tool for database administrators to monitor, manage, and optimize Oracle databases. Below is a detailed guide on configuring OEM 13c R5 with Oracle 19C on Oracle Linux 7.7, along with essential commands and best practices.

You Should Know:

1. Prerequisites

  • Ensure Oracle Linux 7.7 is installed and updated.
  • Verify sufficient disk space (minimum 50GB for installation).
  • Set up proper kernel parameters: 
 Edit sysctl.conf 
vi /etc/sysctl.conf

Add or modify these values 
fs.file-max = 6815744 
kernel.sem = 250 32000 100 128 
kernel.shmmni = 4096 
kernel.shmall = 1073741824 
kernel.shmmax = 4398046511104 
net.ipv4.ip_local_port_range = 9000 65500 
net.core.rmem_default = 262144 
net.core.rmem_max = 4194304 
net.core.wmem_default = 262144 
net.core.wmem_max = 1048576

Apply changes 
sysctl -p

2. Install Oracle 19C Database

 Download Oracle 19C RPM 
wget https://yum.oracle.com/repo/OracleLinux/OL7/latest/x86_64/getPackage/oracle-database-ee-19c-1.0-1.x86_64.rpm

Install 
yum -y localinstall oracle-database-ee-19c-1.0-1.x86_64.rpm

Run root scripts 
/opt/oracle/runInstaller -executeRootScripts

3. Deploy Oracle Enterprise Manager 13c

 Download OEM 13c 
wget https://www.oracle.com/enterprise-manager/downloads/oem-13c-release5-linux-x86-64.zip

Unzip 
unzip oem-13c-release5-linux-x86-64.zip

Run installer 
./runInstaller -ignoreSysPrereqs -waitforcompletion

4. Post-Installation Configuration

 Start OEM 
emctl start oms

Verify status 
emctl status oms -details

Secure OEM with SSL 
emctl secure oms -host <hostname> -ssl_port 4903 -force

5. Key Monitoring Commands

 Check database performance 
emcli get_targets -targets=oracle_database

Generate AWR report 
emcli db_workload_repository -name="AWR_Report" -db_name="ORCL" -duration=60

What Undercode Say:

Oracle Enterprise Manager remains a critical tool for DBAs, offering deep visibility into database performance. Automation through OEM reduces manual intervention, while Linux-based optimizations ensure smooth operations. Future integrations with AI-driven analytics could further enhance predictive maintenance.

Expected Output:

  • Oracle 19C installed successfully.
  • OEM 13c R5 operational with secure access.
  • Automated monitoring reports generated.

Prediction:

Increased adoption of cloud-based OEM deployments with AI-assisted anomaly detection in enterprise environments.

(Relevant Oracle Enterprise Manager Documentation)

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