Dawn May

Dawn May

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Recent Posts

  • Prestart Jobs and Connection Pooling
    January 10, 2019
  • Prestart Job Messages
    January 4, 2019
  • Investigate Prestart Jobs
    December 6, 2018
  • Access Client Solutions Enhancements (November 2018)
    November 27, 2018
  • Prestart Jobs and QPRTJOBs
    November 16, 2018
  • Prestart Jobs and Connection Pooling

    Connection Pooling is the ability to keep a connection to the server in place.  Connections in the pool can be reused by the same application, avoiding overhead associated with creating a new connection for each request. Connection pooling improves performance by reducing the number of jobs started and ended, as well as reducing the overhead of full opens and program activations.   

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    Posted: January 10, 2019 |

    Prestart Job Messages

    Many prestart jobs log messages to both the job log and the history log. This article will review the messages sent by various types of prestart jobs and provide examples of how to gather useful information from these messages.

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    Posted: January 4, 2019 |

    Investigate Prestart Jobs

    Collection Services is always running on your system and you can use the Performance Data Investigator with Collection Services data for insights into your prestart jobs.

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    Posted: December 6, 2018 |

    Access Client Solutions Enhancements (November 2018)

    IBM recently released an updated version of  Access Client Solutions (ACS). There is a long list of enhancements in this update; at the end of this article you will find the list of the enhancements from the ReadMeSPACS.txt file. The number of Request for Enhancement (RFEs) addressed in this update is impressive. The ACS development team is clearly listening to what users are asking for.

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    Posted: November 27, 2018 |

    Prestart Jobs and QPRTJOBs

    What happens when you generate a spooled file from a prestart job? Where does the output go and is there an easy way to find it?

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    Posted: November 16, 2018 |

    Watches and Job Log Messages

    Trying to track down a message sent to the job log of a prestart job is much like looking for a needle in a haystack; on busy systems, there could be hundreds of jobs to look through. If the error was relatively minor, the jobs may end and not generate a job log.

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    Posted: November 5, 2018 |

    The QDFTSVR Job Description

    Many prestart server jobs on IBM i use the default server job description (QGPL/QDFTSVR) provided with the operating system. Several of host servers use the QSYS/QZBSJOBD job description, but that job description has the same default parameter settings as the QDFTSVR job description.  These job descriptions are defined for optimal performance for prestart jobs.

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    Posted: October 25, 2018 |

    Managing Prestart Server Jobs by Remote IP Address

    I recently wrote Work with Active Prestart Jobs, which reviewed how you can manage your prestart server jobs with WRKACTJOB. This approach works well if you want to find jobs by subsystem, job name or the job’s current user profile.

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    Posted: October 3, 2018 |

    QSYS2.ACTIVE_JOB_INFO Service Enhancements: QTEMP_SIZE and Much More

    Several enhancements to IBM i services were announced with IBM i 7.3 TR5 and IBM i 7.2 TR9. The Db2 Group PTF, which includes these enhancements, was released on September 14th.

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    Posted: September 25, 2018 |

    IBM i Access Client Solutions: IFS Properties

    This week, I am taking a break from the series on prestart jobs to review the improved Properties feature added to the IFS support in ACS.  

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    Posted: September 11, 2018 |

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