The DBA can assess the I/O capability of the database’s storage system by using the PL/SQL function DBMS_RESOURCE_MANAGER.CALIBRATE_IO() – this routine issues a very I/O intensive read-only workload to thedatabase’s files to assess the maximum IOPS (I/O requests per second) and MBPS (megabytes of I/O per second) that canbesustained. This data can be reexamined at any time using the DBA table, DBA_RSRC_IO_CALIBRATE, that stores I/Ocalibration results. The calibration should be performed when the database is idle and during off-peak hours to minimizethe heavy I/O workload from interfering with the regular workload and vice versa. I/O calibration can be used tounderstand the performance of the storage subsystem and figure out whether I/O performance problems stem from thedatabase or the storage subsystem. Unlike various external I/O calibration tools, this tool uses the Oracle code stack and issues I/O randomly rather than sequentially the results therefore much more closely match the actual database Performance
Archive for Juni 27th, 2018
Oracle Database 12c – the dbms_resource_manager package has a nice procedure called ‚calibrate_io‘ which is perfect for calibrating disk latency and system throughout
Mittwoch, Juni 27th, 2018rem ***********************************************************
set serveroutput on
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Cerner Healthcare
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Mittwoch, Juni 27th, 2018Microsoft – a new team assembled to unlock the innovation potential in healthcare data
Mittwoch, Juni 27th, 2018It’s an exciting time to be working shoulder-to-shoulder with our healthcare partners and customers, who represent some of the brightest minds in this important industry. We have been approaching the complexities of the healthcare industry with a growth mindset, and for the past two years our team has worked across Microsoft to accelerate healthcare innovation through artificial intelligence and cloud computing, with our initiative Healthcare NExT (New Experiences and Technologies)