Welcome, for the DBAs out there, any tool that helps understand the metrics of the DB performance faster is a helping hand in his daily job, the Enterprise Manager (EM) is no exception to this rule.
For the Oracle Database 10g and over, the EM can be automatically configured during the installation using the Oracle Universal Installer (OUI). Depending on a variety of circumstances, this installation/configuration may fail, and thus we will have to create, or recreate the EM repository and configuration manually, by using the Enterprise Manager Configuration Assistant.
Contrary to what many of you would expect, the EMCA is not a GUI tool, but a command-line tool and thus, it can take us some time to read the entire list of options and clauses that can be added to the command in order to fulfill the task of configuring the EM and creating the necessary repository within the Oracle instance.
So, here you go. The basic instructions you’ll need to create or recreate your repository and configure the EM are these:
emca –repos drop
emca –repos create
emca –deconfig dbcontrol db
emca –config dbcontrol db
But be sure to have the complete information of your instance because you will need it to fill the blanks when running these commands. You’ll need: SID, port, password for sysdba and/or sysoper accounts.
If you are still having trouble, check your time zone settings. For linux, the TZ environment variable should be set and it must match the line agentTZRegion within the EMD.properties file.
Hope this can help you out there.
All your comments are welcome.
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