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https://www.ibm.com/support/knowledgecenter/ssw_aix_72/performance/large_page_ovw.html?origURL=ssw_aix_72/com.ibm.aix.performance/large_page_ovw.htm
AIX treats large pages as pinned memory. AIX does not provide paging support for large pages. The data of an application that is backed by large pages remains in physical memory until the application completes. A security access control mechanism prevents unauthorized applications from using large pages or large page physical memory.
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.
https://support.oracle.com/knowledge/Oracle%20Database%20Products/2084723_1.html
Dec 29, 2019 · Note that Oracle 11.2+ will automatically use 64KB pages unless AME is enabled at the OS tier. AIX 5.3 was different in many OS tuneables than 6.1+ so this note should not be considered complete for AIX 5.3.(there will be other tuneables) Symptoms. ASM is not using large pages.ASM will not startup after implementation of large pages / Grid ...
https://blog.pythian.com/enabling-large-pages-oracle-database-11g-running-ibm-aix/
Apr 04, 2016 · Note: On AIX databases, USE_LARGE_PAGES parameter has NO impact. These parameters are only valid for databases running on Linux, the value of this parameter even if set to FALSE will be ignored on AIX. By default when Large Pages is available on AIX it will be used by database instances regardless of USE_LARGE_PAGES parameter value.
http://www.dba-oracle.com/t_oracle_large_pages.htm
May 30, 2015 · Question: I hear that Oracle large page support can be important to I/O but I don't understand about large pages in Oracle.How do large pages work? Can I enable large pages in Windows? Answer: Oracle large pages are functionally equivalent to huge pages in Linux.Large pages are an operating system construct similar to RAM "fencing" which pins the RAM, making it ineligible …
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 …
http://www-01.ibm.com/support/docview.wss?uid=swg21986164
How does one enable large / huge page support on DB2 LUW ? Are there any restrictions or issues to be aware of ? ... AIX - large (16MB) pages, Linux x64 - huge (2MB) pages, and Windows - large (2MB) pages. The DB:16GB setting is available on AIX only, which enables huge (16GB) pages for the database memory (DATABASE_MEMORY) region.
http://www-01.ibm.com/support/docview.wss?uid=isg3T1023245
Support of Large Files in AIX. Technote (FAQ) Question. How do I configure AIX to support files greater than 2 GB (gigabytes)? Answer. This TechNote addresses the file size limitations and configuration changes that are necessary for writing, uncompressing or creating a file over 2 gigabytes (GB).
http://www.hpcx.ac.uk/support/documentation/IBMdocuments/large_page.pdf
backed with large pages. Other segments in a process are backed with 4KB pages. AIX supports large page usage by both 32- and 64-bit applications. Both the 32- and 64-bit versions of the AIX kernel support large pages. AIX maintains separate 4KB and 16MB size physical memory pools. The customer specifies the amount of
http://www.dba-oracle.com/t_ibm_aix_tuning.htm
Oracle AIX Tuning Optimization. Oracle Database Tips by Donald Burleson: ... AIX Oracle large page support. ... Configure the AIX large page pool by calculating the number of large pages required for the SGA: num_of_large_pages = INT((total_SGA_size-1)/16MB)+1 4. Configure the number and size of large pages: #vmo -p -o lgpg_regions=num_of_large ...
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