The Art of Changing | Confessions of a Pragmatic Intellectual's Mind on The Constant in Life, Change!
I attended and successfully completed “Oracle Coherence 3.6: Share and Manage Data In Clusters” course offered by Red Hat in December 2013. Oracle Coherence 3.6: Share and Manage Data In Clusters – Certificate Oracle Coherence 3.6: Share and Manage Data In Clusters – Course The topics covered in this course were as follow: What is…
Impedance Mismatch problem: O/R issuesSQL: does not work well with large clustersGoogle: BigtableAmazon: Dynamo=> NoSQLOrigin: a Twitter hashtag to advertise a single meeting #nosql non-relational open-source cluster-friendly schema-less when you are getting a price from a row, you are utilizing schema, but when you don’t have schema there is no guarantee data is there 21st…
Have you ever wondered which one to choose if you want constraint(s) to be forced on data? You can achieve your goal by using Triggers or Constraints (or even both). But the questions is which one to choose, and which one is better to use? Shall one go with Constraint all the time or pick…
These are mostly oracle application server commands:EMCTLTo start and stop the Management Service, the Management Agent, the Grid Control Console, the Application Server Control Console, and the Database Control, you use the Enterprise Manager command-line utility (emctl)OPMNCTLopmnctl is the supported tool for starting and stopping all components in an Oracle Application Server instance, with the…
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor. I have encountered this problem using OC4J. I was trying to connect to a database using JDBC (via OC4J) while caught this error. I have searched a little bit online about this one and it seems it is a general error of oracle…
The error message ORA-12162 “TNS:net service name is incorrectly specified” is not exactly what it meant. It suggests that there is a problem with the tnsnames.ora file contents, but in reality the message ORA-12162 “TNS:net service name is incorrectly specified” results from improperly setting your ORACLE_SID value. To fix this error in Windows, set your…
If you are working with Oracle and is a beginner with Oracle, you will find lots of new protocols defined by Oracle to be used. One of them is TSN. TSN is short for Transparent Network Substrate. As Wikipedia says it is: The Transparent Network Substrate (TNS) allows peer-to-peer connectivity where no machine-level connectivity can…
JPA seems to be another generation of Hibernate. It seems that even SUN has problem defining the difference between them. Sun Says: Sun Microsystems has stated that ideas came from several frameworks, including Hibernate and JDO. But what is JPA ? it seems it is a persistence entity is a lightweight Java class whose state…