Dawn May

Dawn May

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Recent Posts

  • Workload Groups and Performance Considerations
  • IBM i 7.2 Improved Temporary Storage Tracking (Part 8)
  • Subsystem Management with Navigator for i, Part 2
  • Active Memory Pools with Navigator for i
  • How to Identify Your Active 5250 Session
  • IBM i 7.2 TR3 and 7.1 TR11 Highlights

    IBM has announced IBM i 7.2 TR3 and 7.1 TR11. This post contains important information related to this announcement.

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    Posted: October 05, 2015 |

    What Happened to the IBM i PCRM?

    The Performance Capabilities Reference Manual (PCRM) was THE resource many used when they needed to know something about IBM i performance. That something could be information about performance test results, I/O performance information, performance considerations for IPL, save/restore, partitioning, CPW ratings and many other miscellaneous topics. The last large version of the PCRM was published for IBM i 7.1 in August of 2013. When IBM i 7.2 became available in spring of 2014, that update of the PCRM was substantially smaller.

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    Posted: September 28, 2015 |

    IBM Application Runtime Expert for i: Managing PTFs

    I am not sure how many of you have heard about IBM Application Runtime Expert for i (ARE) nor am I sure how many of you have actually used PTF support offered by ARE. Hopefully this blog entry can explain to you why you would want to explore the ARE tool overall and especially when it comes to managing your PTFs.

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    Posted: September 21, 2015 |

    Ways to Work With Your JVMs

    “i Can…Work With Your JVMs” was one of the very first ‘i Can’ blogs written. That blog covered the commands that were new in the IBM i 6.1 release for working with your JVMs.

    Since that blog was written, additional interfaces have been added to the operating system that expand the ways in which you can work with your JVM jobs.

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    Posted: September 14, 2015 |

    Routing Work to Subsystems

    In the blog Route DB2 Requests to a Specific Subsystem, I wrote how you can use the new QSYS2.SET_SERVER_SBS_ROUTING procedure to route work for database queries using the QZDASOINIT or QRWTSRVR server jobs to customized subsystems. This is a new way to route work based upon the requesting user profile that augments the other ways you can route work to subsystems.

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    Posted: August 31, 2015 |

    Installation Tips for PowerVP

    In last week’s post, “PowerVP Offers New Features,” I told you about the four cool enhancements you’ll find in Version 1.1.3. I’m sure you’re now anxious to take advantage of the features it offers. So what better time to give you all the details on installing PowerVP on your server? You can install PowerVP on IBM i, AIX/VIOS and Linux on Power. 

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    Posted: August 18, 2015 |

    PowerVP Offers New Features

    When IBM released PowerVP a couple of years ago, it was designed to optimize your virtualized Power Systems servers and help you understand your current workload performance from virtual machines to physical hardware. This can help you more quickly identify overcommitted resources and resolve performance issues.

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    Posted: August 11, 2015 |

    Route DB2 Requests to a Specific Subsystem

    We all know that a key advantage to IBM i is the work management capabilities, in particular the ability to segregate work into different subsystems. One of the more challenging areas for this, however, has been prestart server jobs.  By default, these prestart jobs run in the QUSRWRK subsystem.  You can configure the subsystem in which these prestart server jobs run by routing the requests based upon the client IP address, but that’s often not sufficient.  Many requests may come from one IP address, or perhaps you would like to segregate work based upon some other criteria - for example, the requesting user profile.

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    Posted: August 03, 2015 |

    IBM i 7.2 Improved Temporary Storage Tracking (Part 6)

    The IBM i Temporary Storage Service allows you to use SQL to retrieve information about the temporary storage buckets. You can view the temporary storage buckets in Navigator for i, but there is no command interface to display that information. If you need a text-based interface to display the buckets, this temporary storage service is how you do it.

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    Posted: July 27, 2015 |

    Tracking IBM i System Limits, Part 2

    My last blog was an Introduction to IBM i System Limits and Maximum Capacities. In that blog, I introduced System Health Services, which allow you to track system limits. System limits tracking support is provided via DB2 PTFs, so be sure to install the latest DB2 Group PTF when you start to explore this capability. The limits tracked vary by release and DB2 Group PTF level.

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    Posted: July 13, 2015 |

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