The result is that all of the jobs waiting for the GO message are started at the same time. With the health of the backup system in mind it would be wiser to query the jobs view find the backup job that was scheduled first and give that job its specific event. In that case the BCKUP_01 job will wait for the message BCKUP_01; and BCKUP_02 will wait...
The following objects show up in the schema which are created to support the queue table This also explains why MARVIN needs quota on his default tablespace. The queue definitions part is ready. Now we can tie a job to the queue. First create a job as follows geshibot language sql -- BEGIN sys.dbms_scheduler.create_job job_name...
In other third-party scheduling packages I have seen these notification actions implemented as part of the chain definitions because they lack a Scheduler event queue. In such packages messages are sent by mail in extra chain steps. In the Oracle Scheduler this queue is present and is very useful for us. Compared to 10g nothing has changed in...
On many occasions a calendar will do fine for scheduling jobs. However there are situations that require an immediate action and which cannot wait for the next activation based on a calendar. An example might be of a user who logs on to the database and then using a logon trigger more actions are executed. Another example could be a situation...
So far we have mostly used jobs that ran immediately upon being enabled or when we called the run_job procedure of the dbms_scheduler package. Many jobs are time-based; they are controlled by a schedule based on some kind of calendar. However not everything in real life can be controlled by a calendar. Many things need an action on an ad hoc basis...
Mastering Oracle Scheduler in Oracle 11g Database  by  Ronald Rood A practical guide for Database Administrators and Developers to setting up enterprise class job scheduling Scheduler DBMS_SCHEDULER is included in Oracle Database and is a tool for the automation management and control of jobs. It enables users to schedule jobs running...
Looking at our Project Explorer window with our target Oracle module expanded we can see a number of objects that are available to us as shown here There are objects that are relational such as Tables Views Materialized Views and Sequences. Also there are dimensional objects such as Cubes and Dimensions. We just discussed relational objects...
We ll follow the same steps as we did in the last chapter where we created the ACME_WS_ORDERS module. Right-click on the Oracle object under Databases and select New... from the pop-up menu to launch the Create Module Wizard and step through the process. We ll name this module ACME_DWH for ACME Data Warehouse. TIP An important difference between...
There are a couple of ways we can go about creating our target user— create the user directly in the database and then add to OWB or use OWB to physically create the user. If we have to create a new user and if it s on the same database as our repository and workspaces it s a good idea to use OWB to create the user especially if we are not...
The Warehouse Builder contains a number of objects which we can use in designing our data warehouse that are either relational or dimensional. OWB currently supports designing a target schema only in an Oracle database and so we will find the objects all under the Oracle node in the Project Explorer. Let s launch Design Center now and have a look...
In the case of the ACME Toys and Gizmos Company we have seen that the main measure the management is concerned about is daily sales. There are other numbers we could consider such as inventory numbers How much of each item is on hand However the inventory is not directly related to daily sales and wouldn t make sense here. We can model an inventory...
A multidimensional implementation or OLAP online analytic or analytical processing requires a database with special features that allow it to store cubes as actual objects in the database and not just tables that are used to represent a cube and dimensions. It also provides advanced calculation and analytic content built into the database to facilitate...
Implementation of  a Dimensional Model in a Database We have seen how a dimensional model is preferred over a normalized model for designing a data warehouse. Now before we finalize our model for the ACME Toys and Gizmos data warehouse let s look at the implementation of the model to see how it gets physically represented in the database. There...
The dimensions become the business characteristics about the sales for example A time dimension— users can look back in time and check various time periods A store dimension— information can be retrieved by store and location A product dimension— various products for sale can be broken out Think of the...
We have our entire source structures defined in the Warehouse Builder. But before we can do anything with them we need to design what our target data warehouse structure is going to look like. When we have that figured out we can start mapping data from the source to the target. So let s design our target structure. First we re going to take a look...
Oracle Warehouse Builder 11g Getting Started  By  Bob Griesemer About the Author Bob Griesemer has over 27 years of software and database engineering DBA  experience in both government and industry solving database problems designing  and loading data warehouses developing code leading teams of developers and satisfying...
Business Value What Really Matters It is very important to take a holistic view on what the benefits are for legacy modernization. There are of course cost savings in hard dollars that are associated with a large­ scale modernization. After all TCO ROI is often what drives most organizations. However we have seen an increasing amount of proof...
Here we look at strategies to modernization a set of data stores that are stored across disparate and heterogeneous sources. We often have problems with accessing and managing legacy data. There is an increase in cost to run batch jobs which generate reports 24 to 48 hours after they are needed. Further this legacy data often needs to be integrated...
Re-Hosting Based Modernization Evolving from the core re hosting approach and leveraging flexible rules driven automated conversion tools this approach goes beyond re hosting to a functionally equivalent application. Instead of a pure shift of COBOL code to a target system without any changes to the original code some of the automated tooling used...
Platform Migration This are a encompasses a few different approaches. They all share a common theme of low risk predictable migration to an open system platform with a high level of automation to manage this process. With platform migrations the focus is moving from one technology base to another as fast as possible and with as little change as...