In Windows, Oracle cannot start em due to host name or IP address changes.

Error message:

Win Event Viewer:
An error occured while trying to initialize the service.

Manual start: emctl start dbconsole
Environment Variable oracle_sid not defined. Please define it.
When set oarcle_sid = orcl is executed, an error is returned.
Unable to determine local host from URL repository_url = http: // localhost: % em_upload_port %/EM/upload/

Note the following:

1: Host Name:
C:/Windows/system32/Drivers/etc/hosts

2: Em link JDBC:
$ ORACLE_HOME/Solaris/J2EE
OC4J_DBConsole_fox-kook_kook
Oc4j_dbconsole_localhost_kook (copy the directory from the Fox-kook host name as localhost)

3: the connection method for modifying the listener to the host name. Do not use the IP address.
$ ORACLE_HOME/Network/admin/listener. ora

Sid_list_listener =
(Sid_list =
(Sid_desc =
(Global_dbname = kook.glfsoft.com)
(ORACLE_HOME = G:/Oracle/product/10.2.0/db_1)
(Sid_name = kook)
)
)

Listener =
(Description =
(Address = (Protocol = TCP) (host = fox-kook) (Port = 1521 ))
)

$ ORACLE_HOME/Network/admin/tnsnames. ora is the same.
Kook =
(Description =
(Address_list =
(Address = (Protocol = TCP) (host = fox-kook) (Port = 1521 ))
)
(CONNECT_DATA =
(Server = dedicated)
(SERVICE_NAME = kook.glfsoft.com)
)
)

Eventually, IP address changes do not affect Oracle's Em startup.

Command Group with re-built Em

Reference to create an EM Database
Emca-repos create re-creates an EM Database
Emca-repos recreate deletes an EM Database
Emca-repos drop: Configure Database Control for the database
Emca-config dbcontrol dB deletes the Database Control Configuration of a Database
Emca-deconfig dbcontrol DB: reconfigure the Database Control port. The default port is 1158.
Emca-reconfig ports
Emca-reconfig ports-dbcontrol_http_port 1160
Emca-reconfig ports-agent_port 3940 first sets the oracle_sid environment variable and then starts the EM console service
Emctl start dbconsole first sets the oracle_sid environment variable and then stops the EM console service
Emctl stop dbconsole first sets the oracle_sid environment variable to view the EM console service status
Emctl status dbconsole

Steps for configuring dbconsole

Emca-repos create
Emca-config dbcontrol DB
Emctl start dbconsole to reconfigure dbconsole
Emca-repos drop
Emca-repos create
Emca-config dbcontrol DB
Emctl start dbconsole

 

 

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