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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.
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.
https://support.oracle.com/
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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.
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
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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