Tuesday, October 5, 2010

Calculate Database Connections Needed For A PeopleSoft Instance

As a PeopleSoft system administrator or a DBA, chance may be you need to calculate how many database connections are needed for a PeopleSoft database. Below are some tips for the calculation:-

App Server Domain

  • The following processes connect to the database: PSMONITORSRV, PSANALYTICSRV, PSSAMSRV, PSQRYSRV, PSAPPSRV, PSQCKSRV, PSBRKDSP, PSBRKHND, PSPUBDSP, PSPUBHND, PSSUBDSP, PSSUBHND, PSMCFLOG, PSUQSRV, PSRENSRV (Tip: in psappsrv.ubb, all processes except for PSWATCHSRV with -D parameter connect to the database)

  • One PSAPPSRV can have 2 db connections if DbFlags is not set to 4(Disable Second DB Connection) or 8(Disable Persistent Secondary DB Connection)

  • The following processes don't connect to the database: BBL, JSL, JSH, WSL, WSH, PSDBGSRV, JREPSVR, PSWATCHSRV


Process server domain


  • The following processes connect to the database: PSPRCSRV, PSAESRV, PSDSTSRV, PSMSTPRC, PSMONITORSRV (Tip: in psprcsrv.ubb, all processes with -CD parameter connect to the database)

  • One PSAESRV can have 2 db connections if DbFlags is not set to 4(Disable Second DB Connection) or 8(Disable Persistent Secondary DB Connection)

  • The following processes don't connect to the database: BBL



Others
  • External programs, such as PSRUN (cobol remote call), PSCRRUN.exe(Crystal Reports), PSSQR(SQR report), PSNVS(nVision) etc, also need db connection

  • Tools/applications used by developers/system administrators, such as pside.exe, psdmt.exe, Oracle client, etc, also need db connection

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