Oracle Large Page Support Aix

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Oracle Large Pages

    http://www.dba-oracle.com/t_oracle_large_pages.htm
    May 30, 2015 · Oracle large pages support began in Oracle 10g Release 1. Because of new operating system support, Oracle 10g Release 1 or later can make use of processor memory addressing resources for more efficient page usage. When large page support is enabled, the Oracle Database buffers will be more quickly accessible by the CPU.

Enabling large pages on Oracle Database 11g running on IBM AIX

    https://blog.pythian.com/enabling-large-pages-oracle-database-11g-running-ibm-aix/
    Apr 04, 2016 · Besides small page swapping, what reasons would implementing large pages slow things down? I have a client on AIX 7.1/Power8 and Oracle 11g that implemented large pages as you described above and performance got worse.

Enabling large page support (AIX) - ibm.com

    https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com.ibm.db2.luw.admin.dbobj.doc/doc/t0010405.html
    In addition to the traditional page size of 4 KB, the POWER7 processors (and higher) on IBM® Power Systems also support variable page sizes. Applications such as IBM Db2 Version 11.1 for AIX, that require intensive memory access and that use large amounts of virtual memory can gain performance improvements by using large pages.

How to enable Large Page Feature on AIX-Based ... - Oracle

    https://support.oracle.com/knowledge/Oracle%20Database%20Products/372157_1.html
    To enable Large Page Feature on AIX-Based Systems like AIX V5.1 OS when running on IBM POWER4 or POWER5 processors, pSeries systems support Large Page. See: Oracle Database Administrator's Reference 10g Release 2 (10.2) for UNIX-Based Operating Systems Part Number B15658-05-or-Oracle Database Administrator's Reference

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Enabling large page support (AIX) - IBM

    https://www.ibm.com/support/knowledgecenter/en/SSEPGG_10.5.0/com.ibm.db2.luw.admin.dbobj.doc/doc/t0010405.html
    In addition to the traditional page size of 4 KB, the POWER4 processors (and higher) on System z® also support a 16 MB page size. Applications such as IBM® DB2 Version 10.5 for AIX, that require intensive memory access and that use large amounts of virtual memory can gain performance improvements by using large pages.

how to use large pages in AIX with oracle Oracle Community

    https://community.oracle.com/thread/356275
    Aug 10, 2009 · Hi, i'm trying to convince oracle to use large pages on AIX 5.3 but haven't suceeded so far. i set v_pinshm=1, maxpin%=80, lgpg_regions=448 and lgpg_size=16777216 using 'vmo' and 'LOCK_SGA=true' in spfile. after rebooting and starting the instance 'svmon' shows no no large pages in use: # svmon size inuse free pin virtual memory 4046848 3711708 335140 2911845 1503108 pg …

Oracle tuning for AIX Optimization

    http://www.dba-oracle.com/t_ibm_aix_tuning.htm
    In addition to setting the Oracle LOCK_SGA parameter to TRUE, the AIX operating system must be configured to allow pinned memory to be used for shared memory. AIX Oracle large page support. Give the Oracle user ID the CAP_BYPASS_RAC_VMM and CAP_PROPAGATE capabilities by …



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