Oracle-EBS-SQL
Library of Oracle EBS SQLs for operational Excel and ECC reporting, Discoverer replacement, Oracle EBS performance tuning and rapid report development.
DBA SGA+PGA Memory Configuration
Description:
Current SGA and PGA memory configuration in gigabytes.
A frequent configuration problem is not making full use of the available hardware resources, especially the physical RAM of the database server. This report shows the servers SGA, PGA and CPU configuration in comparison to the available hardware. For maximum performance, configure the SGA+PGA to use the full available memory of your server minus a few gig for OS level caching, e.g. for writing and reading of PLSQL output files on the DB node and for process memory (an estimated 4MB per process, see below).
Oracle’s performance tuning guide: https://docs.oracle.com/en/database/oracle/oracle-database/12.2/tgdba/database-memory-allocation.html
Oracle’s exadata best practices whitepaper: SUM of databases (SGA_TARGET + PGA_AGGREGATE_TARGET) + 4 MB * (Maximum PROCESSES) < Physical Memory per Database Node
Tom Kyte’s recommendation: “… if you want it all automatic, give ALL FREE MEMORY on your machine to the SGA and be done with it. No more monitoring, no more thinking about how it could be, should be, would be used. Set the PGA aggregate target and the SGA target to be a tad less than physical memory on the machine and you are done.” https://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:30011178429375
The report also shows the status of system statistics. select * from sys.aux_stats$
If CPUSPEEDNW still shows the default of 4096, it either means that the stats have never been gathered or it could also mean that your storage is too fast to gather them with the standard NOWORKLOAD method and you should set reasonable values manually then. exec dbms_stats.gather_system_stats(); exec dbms_stats.set_system_stats(‘IOSEEKTIM’,1); exec dbms_stats.set_system_stats(‘IOTFRSPEED’,85782);
There is also an Exadata mode, considering the faster storage correctly and updating the MBRC too exec dbms_stats.gather_system_stats(‘EXADATA’);
The following command checks if hugepages are configured and how many are in use: grep Huge /proc/meminfo https://access.redhat.com/solutions/320303
To configure hugepages, set the vm.nr_hugepages in the /etc/sysctl.conf file and hard and soft memlock in /etc/security/limits.conf for the oracle user. /etc/sysctl.conf vm.nr_hugepages = SGA GB x 512 + 5 /etc/security/limits.conf oracle soft memlock (SGA GB x 512 + 5) * 2048 oracle hard memlock (SGA GB x 512 + 5) * 2048 https://www.carajandb.com/en/2016/09/22/7-easy-steps-to-configure-hugepages-for-your-oracle-database-server/
Check if all database parameters are set according to Oracle’s requirement: Database Initialization Parameters for Oracle E-Business Suite Release 12 (Note 396009.1) https://support.oracle.com/rs?type=doc&id=396009.1
To perform this check automatically, install and run Oracle’s ‘Database Performance and Statistics Analyzer’ concurrent program (Doc ID 2126712.1) https://support.oracle.com/rs?type=doc&id=2126712.1
Parameters
Container Data
Used tables
dba_hist_snapshot, dba_hist_sqlstat, dba_hist_sqltext, gv$osstat, gv$parameter, gv$sgainfo, gv$instance, v$database, dba_hist_pgastat, dhss, aux_stats$, v$parameter, dba_feature_usage_statistics, dba_tablespace_usage_metrics
Categories
Related reports
DBA AWR SQL Performance Summary
Dependencies
If you would like to try one of these Oracle EBS SQLs without having Blitz Report installed, note that some of the reports require functions from utility package xxen_util.
Example Report
DBA SGA+PGA Memory Configuration 29-Jul-2018 103004.xlsx
Report SQL
www.enginatics.com/reports/dba-sga-pga-memory-configuration/
Blitz Report™ import options
DBA_SGA_PGA_Memory_Configuration.xml
Oracle E-Business Suite Reporting Library
We provide an open source Oracle EBS SQLs as a part of operational and project implementation support toolkits for rapid Excel reports generation.
Blitz Report™ is based on Oracle EBS forms technology, and hence requires minimal training. There are no data or performance limitations since the output files are created directly from the database without going through intermediate file formats such as XML.
Blitz Report can be used as BI Publisher and Oracle Discoverer replacement tool. Standard Oracle BI Publisher and Discoverer reports can also be imported into Blitz Report for immediate output to Excel. Typically, reports can be created and version tracked within hours instead of days. The concurrent request output automatically opens upon completion without the need for re-formatting.
The Filters, Columns, Rows and Values fields are used to create and deliver the data in pivot table format with full drill down to details.
The Excel template upload functionality in Blitz Report allows users to create their own layouts by uploading an Excel template with additional sheets and charts, automatically refreshed when the report runs again. This allows to create custom dashboards and more advanced visualizations of report data.
You can download and use Blitz Report free of charge for your first 30 reports.
The installation and implementation process usually takes less than 1 hour; you can refer to our installation and user guides for specific details.
If you would like to optimize your Oracle EBS implementation and or operational reporting you can visit www.enginatics.com to review great ideas and example usage in blog. Or why not try for yourself in our demo environment.
Useful Links
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