Fixing the Oracle Enterprise Manager Login Redirect Issue After Server Reboot

Discover how to resolve the `Oracle Enterprise Manager` login redirect problem that occurs after a server reboot. This guide will help you understand the steps necessary to ensure smooth logins and uninterrupted service.
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Resolving the Oracle Enterprise Manager Login Redirect Problem

If you're experiencing issues logging into Oracle Enterprise Manager (EM) after rebooting your server, you are not alone. Many users encounter a frustrating scenario where they are redirected back to the login page, making it difficult to access the EM interface. In this guide, we’ll explore the reasons behind this problem and offer a straightforward solution that you can implement.

Understanding the Problem

The issue arises in situations where the Oracle services are started while the server is using the wrong time settings. Typically, this occurs in virtualized environments, where the server's time may not align with the expectations of the Oracle SOA Suite you are using. As a result, after rebooting the server, users find themselves stuck in a loop where they cannot log in to EM successfully.

Your particular scenario is an example of this issue, where the Oracle Server gets booted with the current date and time but then syncs back to the required/test time during startup, causing complications with the login process.

Solution to the Login Issue

To resolve the login issue effectively, you need to disable time synchronization from your host machine (such as VMware) for the virtual machine running the Oracle services. Here’s a step-by-step guide to implement this fix:

Step 1: Access VMware Settings

Open your VMware management console.

Locate the virtual machine (VM) that is hosting your Oracle environment.

Step 2: Disable Time Sync

Right-click on the VM and select Settings.

In the Options tab, find the VMware Tools or Time Synchronization settings.

Uncheck the box that enables synchronization of the guest OS with the host time.

Step 3: Reboot the Virtual Machine

Save your settings and restart the virtual machine.

Once rebooted, start the ORACLE base_domain_AdminServer service.

Step 4: Test Login to Oracle Enterprise Manager

Navigate to the Oracle EM login page.

Log in with your credentials to ensure that the redirect issue no longer persists.

Step 5: Start Other Services

After successfully logging in, you can proceed to start the ORACLE base_domain_soa_server1 service and any other necessary services.

Verify that you can still access the Oracle EM interface as expected.

Conclusion

Addressing the Oracle Enterprise Manager login redirect issue hinges largely on the management of time synchronization in a virtualized environment. By disabling time sync from the host system, you can prevent potential mismatches in time settings that lead to login complications. Following the outlined steps should help you achieve a smooth login experience after server reboots and offer you a stable operational environment.

If you find yourself facing this issue in the future, know that with this fix, you can quickly resolve it and get back to your work without unnecessary delays. Happy managing with Oracle!