Oracle Database on the Docker Store

You probably know that there’s an official github repository storing Dockerfiles and samples to build Docker images for Oracle products and Open Source projects. Now Oracle takes one more step to support Docker. Oracle Brings Oracle’s Flagship Databases and Developer Tools to the Docker Store (you can read the official announcement). Oracle Linux was already on the Docker Store. Oracle Database Enterprise Edition, Oracle client tools, Oracle Weblogic, Oracle (more...)

Using EMCLI for Mass Update a Property Value

Here’s a quick and simple script which can help you to update a target property value of all targets running on a specific host. The script will expect you to enter 3 parameters: host name, property name and property value. Then it will search for the targets running on the given host name, and set the property to the given value:

emcli hostname "propertyname" propertyvalue

It’s better to enter the property name in (more...)

How Enterprise Manager Detects the Version of Oracle Databases

You know that patch numbering has been changed since November 2015, and the new format replaces the numeric 5th digit of the bundle version with a release date in the form “YYMMDD”. Let’s say you applied PSU 160719 to your database, the exact version of your database becomes We also know that PSUs do not change the Oracle release version information that can be queried from (more...)

Create Blackout for Multiple Targets on EM13c

The notifications emails of a “planned” downtime is one of the annoying things of monitoring systems. You forget creating blackout and you start a maintenance work, and you get lots of notifications mails. Most of the time, the target which goes down, also affect other targets so it will multiple the number of unwanted notifications mails. Good thing is, it’s very easy to create blackouts on EM13c. We can do it through web console, emctl (more...)

Database Server Generated Alerts and Enterprise Manager

You installed Oracle Enterprise Manager Cloud Control, added your production databases to the Enterprise Manager system. You set up the metric thresholds, monitoring templates and notification rules. Everything was looking OK until you got a warning email about “Current Open Cursors Count”. It was surprising because you didn’t set any threshold for it.

You checked the “Metric and Collection Settings” page to be sure that you didn’t set up any threshold, and you were right!


Who Decommissioned My Enterprise Manager Agent?

I prefer to write blog posts about the interesting questions on OTN. This blog post is one of them. There are usually more than one EM admins managing the systems, and you may want to track other users’ activity. Enterprise Manager Cloud Control provides auditing mechanism called “comprehensive auditing”. It’s not enabled by default for all actions because it may consume a lot of disk space.

If you want to enable it for all actions, (more...)

EMCLI: Add a Database Target with Specific DB System Name

On Oracle Community forum, I’ve seen a good question about using EMCLI to add targets. The forum user says that they decided to name the database targets with combining db_name and hostname. As you may know, when you add a database target, EM also creates a database system for the new target (or assign it with an existing one). The new database system’s name is generated by adding “_sys” to the database target name. Let’s (more...)

How to Patch Oracle Database on the Oracle Cloud

I was waiting the latest PSU for Oracle Database on the Oracle Database Cloud Service, and today I noticed that it’s available. So let’s see how we can update our Oracle Databases in the cloud.

First we go to the database home to see if any updates is available. As you can see, in the administration box, there is an available patch. We click on it to see the details of (more...)

How to Create Storage Containers on the Oracle Cloud

When creating a Database Cloud Service, you have an option to select “cloud storage” as a backup destination. In this case, the database backups will be stored in “storage containers”. As I see, lots of Oracle Cloud users have problem with setting up storage containers as backup destination.

It’s possible to create a storage container before you create the database service or you can create it while provisioning the DB service. Whichever method you chose, (more...)

EM13c: OMSCA Recovery Mode Parameters “-as” and “-ms”

In the official backup and recovery documents of Oracle Enterprise Manager Cloud Control, when omsca tool is used for recovery, it is used with “-as” and “-ms” parameters but they are not well documented. For example:

Run omsca in recovery mode specifying the export file taken earlier to configure the OMS:

<OMS_HOME>/bin/omsca recover –as –ms –nostart –backup_file <exportconfig file>

Some parameters have no need any explanation but what are “-as” and “-ms”? Can we use (more...)