What should I do if the em of oracle11g cannot be opened?

Solution: 1. Use the "emca -deconfig dbcontrol db" command to delete the configuration; 2. Use the "emca -repos drop" command to delete the repository; 3. Use the "emca -config dbcontrol db -repos create" command Just recreate em.

The operating environment of this tutorial: Windows 10 system, Oracle 11g version, Dell G3 computer.

What should I do if the em of oracle11g cannot be opened?

I cannot log in to the EM and execute emca -config dbcontrol db. I don’t know that the default port number is always 1522. I have no choice but to google it. Start the second step below.

. . (My monitoring is fine)

Open the Net Configuration Assistant in the oracle configuration tool, select "Listener Configuration", next step, then select "Reconfiguration", next step, carefully

Check whether the parameters configured in each step are correct.

1. Use the "emca -deconfig dbcontrol db" command on the command line to delete the configuration

2. Use the "emca -repos drop" command to delete the repository

Note: Do both steps 1 and 2, otherwise a message will be reported when reinstalling EM The installation failed with the error "ORA-20001: SYSMAN already exists..".

3. Use the "emca -config dbcontrol db -repos create" command to create em.

Recommended tutorial: "Oracle Video Tutorial"

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