While working with a client’s 9.1 DataStage version, I ran into a situation where they wanted to parameterize SQL where clause lists in an Oracle Connector stage, which honestly was not very straight forward to figure out. First, if the APT_OSL_PARAM_ESC_SQUOTE is not set and single quotes are used in the parameter, the job creates unquoted … Continue reading DataStage – How to use single quoted parameter list in an Oracle Connector
How to know if your Oracle Client install is 32 Bit or 64 Bit Sometimes you just need to know if your Oracle Client install is 32 bit or 64 bit. But how do you figure that out? Here are two methods you can try. The first method Go to the %ORACLE_HOME%\inventory\ContentsXML folder and … Continue reading How to know if your Oracle Client install is 32 Bit or 64 Bit
OLTP Versus Data Warehousing I’ve tried to explain the difference between OLTP systems and a Data Warehouse to my managers many times, as I’ve worked at a hospital as a Data Warehouse Manager/data analyst for many years. Why was the list that came from the operational applications different than the one that came from the … Continue reading OLTP vs Data Warehousing
Since the Infosphere, information server, repository, has to be installed manually with the scripts provided in the IBM software, sometimes you run into difficulties. So, here’s a quick script, which I have found useful in the past to identify user permissions for the IAUSER on Oracle database’s to help rundown discrepancies in user permissions. … Continue reading Oracle – How to get a list of user permission grants
What does ACID mean in database technologies? Concerning databases, the acronym ACID means: Atomicity, Consistency, Isolation, and Durability. Why is ACID important? Atomicity, Consistency, Isolation, and Durability (ACID) are import to database, because ACID is a set of properties that guarantee that database transactions are processed reliably. Where is the ACID Concept described? Originally described … Continue reading Databases – What is ACID?
Here is a table quick reference of some common database and/or connection types, which use connection level isolation and the equivalent isolation levels. This quick reference may prove useful as a job aid reference, when working with and making decisions about isolation level usage. Database isolation levels Data sources Most restrictive isolation level More … Continue reading Databases – Database Isolation Level Cross Reference
Acronyms, Abbreviations, Terms, And Definitions Definition of a Foreign Key A foreign Key (FK) is a constraint that references the unique primary key (PK) of another table. Facts About Foreign Keys Foreign Keys act as a cross-reference between tables linking the foreign key (Child record) to the Primary key (parent record) of another table, which … Continue reading Database – What is a foreign key?