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Enterprise Manager is not able to connect to the database instance. The state of the components are listed below<br />
<br />
Database Instance<br />
&nbsp; &nbsp; &nbsp; &nbsp;down<br />
<br />
Listener &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Agent connection to instance<br />
&nbsp; down &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;down<br />
<br />
It was working fine untill few days back<br />
<br />
dbconsole is up and listener is up as well<br />
<br />
Any suggestion?
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Enterprise Manager is not able to connect to the database instance. The state of the components are listed below

Database Instance
       down

Listener                                                                Agent connection to instance
  down                                                                                        down

It was working fine untill few days back

dbconsole is up and listener is up as well

Any suggestion?

Oracle enterprise manager

Oracle is an object-relational database management system. It supports a large number of languages and application development frameworks. Its primary languages are SQL, PL/SQL and Java, but it also includes support for C and C++. Oracle also has its own enterprise modules and application server software.