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HP-UXKernelConfigurationforOracleDBsLastUpdate:July2002(Oracle8/8i/9iR1/9iR2,HP-UX11/11i)Oracle9irecommendations:MinimumRAM=256MBHP-UX11orHP-UX11iSwapSpace:Minimum2xRAMor400MB,whicheverisgreateravailableDiskSpace:3GBCreateOSUNIXgroupsforOraclesystem:OSDBAgroup:RequiredOSOPERgroup:OptionalORAINVENTORYgroup:OptionalAPACHEgroup:RecommendedPleasecheckappendix6forSCHED_NOAGEusageandMLOCKwww.changshady.comNote:TheseareminimumkernelrequirementsforOracle9i.Ifyouhavepreviouslytunedyourkernelparameterstolevelsequaltoorhigherthanthesevalues(becarefulforfilesystemcacheparameters–dbc_max_pct,dbc_min_pct),continuetousethehighervalues.Asystemrestartisnecessaryforkernelchangestotakeeffect.KernelParameterSettingPurposeHP-UX11.xKernelParameterDescription,Default/RecommendedValuebufpagesNumberofstaticBufferPagesof4kB,enablesdynamicbuffercache(seedbc_max/min_pct).default=0recommended:0www.tangxiaobei.comdbc_max_pctMaxdynamicBufferCachesizeinpercentofsystemmemory,whenbufpagesandnbufarebothsetto0,default=50.recommended:between3and10It'smoreefficienttousesystemmemoryforOracleSGAinsteadoffilesystembuffercachedbc_min_pctMindynamicBufferCachesizeinpercentofsystemmemory(seedbc_max_pct),default=5.recommended:between2and5www.changshady.comfs_asyncseeappendix2andappendix6KSI_ALLOC_MAX(NPROC*8)Definesthesystemwidelimitofqueuedsignalthatcanbeallocated.max_async_portsMaximumnumberofasyncdskportsthatcanbeopenatonetime.Ifanerrorhappenswiththis,itwillnotshownintheOraclealert.logfileorintracefiles.default:50recommended:max.noofshadowprocesses+noofparallelquerieslavesmax_thread_procMaxno.ofthreadsallowedineachprocessdefault:64recommended:<=Oracle8.1.6=64>=Oracle8.1.7=256maxfilesSoftFileLimitperProcess,softlimitfornumberoffilesaprocessisallowedtohaveopensimultaneously.Processescanincreasetheirsoftlimituntiltheyreachthehardlimitmaxfiles_lim.default=60.recommended=1024maxfiles_limHardFileLimitperProcess,default=1024.recommended=1024(default).
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