Enterprise Manager

How to Remove EM Express XDB Credential Dialog

by Ed Chen
November 11, 2020November 12, 2020

You may surprisingly see a credential dialog from XDB like the feature image when you tried to login Oracle Enterprise Manager Database Express (EM Express).… Read More »

Oracle Enterprise Manager Database Express 19c - This Page Can't be Displayed

How to Resolve Enterprise Manager Express Secure Connection Fail

by Ed Chen
November 7, 2020November 12, 2020

Saw an error in Internet Explorer 11 when I tried to connect to Oracle Enterprise Manager Database Express (EM Express) of a RAC server. This… Read More »

How to Revert EM Express 19c Back to Flash-Based

by Ed Chen
July 25, 2020July 22, 2020

Since Oracle database 19c, we have a new UI of Enterprise Manager Express (EM Express) which is based on Java JET technology. As you can… Read More »

How to Start EM Express for PDB

by Ed Chen
July 22, 2020November 4, 2020

EM Express for PDB During database creation, DBCA enables Enterprise Manager Express (EM Express) for being created CDB, not for PDB globally by default. We… Read More »

How to Access Enterprise Manager Database Express 12c

by Ed Chen
February 18, 2018August 5, 2020

After installing 12c database, you may want to enable dbconsole just like 10g and 11g, but in fact, there's no emctl command to operate with.… Read More »

How to Resolve OC4J_DBConsole_localhost_ORCL not found

by Ed Chen
February 3, 2018August 5, 2020

An error occurred when I tried to start up dbconsole of Oracle database 11g.oracle@solaris11vm:~$ emctl start dbconsoleOC4J Configuration issue. /u01/app/oracle/product/11.2.0/dbhome_1/oc4j/j2ee/OC4J_DBConsole_localhost_ORCL not found.Looked into the filename… Read More »

How to Resolve Enterprise Manager is Not Able to Connect to the Database Instance

by Ed Chen
May 13, 2017August 5, 2020

We saw the problem in Enterprise Manager 11g which has not been used for a long time.Enterprise Manager is not able to connect to the… Read More »

How to Resolve Unable to Switchover in Cloud Control 12c Due to a Bug

by Ed Chen
April 5, 2013August 5, 2020

When you make a switchover in Cloud Control 12c, it might show an error message to prevent you to proceed, especially when you are using… Read More »