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fsfreeze in Linux

The fsfreeze command, is used to suspend and resume access to a file system. This allows consistent snapshots to be taken of the filesystem. fsfreeze supports Ext3/4, ReiserFS, JFS and XFS. A filesystem can be frozen using following command: # /sbin/fsfreeze -f /data Now if you are writing to this filesystem, the process/command will be…

Ingest a Single Table from Microsoft SQL Server Data into Hadoop

Introduction This blog describes the best-practice approach in regards to the data ingestion from SQL Server into Hadoop. The case scenario is described as under: Single table ingestion (no joins) No partitioning Complete data ingestion (trash old and replace new) Data stored in Parquet format Pre-requisites This example has been tested using the following versions: Hadoop…

OpenTSDB and Google Cloud Bigtable

Data comes in different shapes. One of the these shapes is called a time series. Time series is basically a sequence of data points recorded over time. If, for example, you measure the height of the tide every hour for 24 hours, then you will end up with a time series of 24 data points….

OEM 12c Silent Installation

“What’s for lunch today?”, said the newly born ready to run Red Hat 6.4 server. “Well, I have an outstanding 3-course meal of OEM12c installation. For the appetizer, a light and crispy ASM 12c, DB 12c with patching for the main and desert, and to cover everything up, OEM 12c setup and configuration”, replied  the DBA who…

Thanks Oracle for R12.AD.C.DELTA.6

When reading through the release notes of the latest Oracle E-Business Suite R12.2 AD.C.Delta.6 patch in note 1983782.1, I wondered what they meant by “Simplification and enhancement of adop console messages”. I realized what I was missing after I applied the AD.C.Delta6 patch. The format of the console messaged changed drastically. To be honest, the…

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