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V6R1 MTU

System i Navigator removal of support for memory-resident database
monitors next release
V6R1 will be the last release for System i Navigator and Systems Director to provide support for
memory-resident database monitors. Memory-resident database monitors are identified as type Summary
in the SQL Performance Monitors folder.
Note: The memory-resident database monitor APIs will still be available.
In prior releases, the main advantage of the memory-resident database monitor over the Detailed monitor
(STRDBMON) was its smaller impact on system resources. This was due to the fact that it maintains the
collected information in memory and writes to files only if and when the user requests that it do so. The
result was the ability to gather database performance statistics with a minimal impact to the performance
of the system as whole, or to the performance of individual SQL statements. However, significant
enhancements introduced in V5R4 and V6R1 allow additional filtering on detailed SQL performance
monitors, which greatly reduces the system impact of this type of monitor. SQL Plan Cache viewing and
snapshot capabilities have also been added to provide access to the "always on" statement information
cache. These new and redesigned tools provide great detail while maintaining low system impact. These
improvements have eliminated the advantage the memory-resident database monitor once provided.
If you plan to continue working with the memory-resident database monitors, you can directly call the
memory-resident database monitor API interfaces.

V7R1 MTU

System i Navigator removal of support for memory-resident database monitors
Starting in i 7.1, System i Navigator and IBM Navigator for i no longer provide support for
memory-resident database monitors. Memory-resident database monitors are identified as type Summary
in the SQL Performance Monitors folder.
Note: The memory-resident database monitor APIs are still available.
In prior releases, the main advantage of the memory-resident database monitor over the Detailed monitor
(STRDBMON) was its smaller impact on system resources. This was because it maintains the collected
information in memory and writes to files only if and when the user requests that it do so. The result
was the ability to gather database performance statistics with a minimal impact to the performance of the
system as whole, or to the performance of individual SQL statements. However, significant enhancements
introduced in V5R4 and 6.1 allow additional filtering on detailed SQL performance monitors, which
greatly reduces the system impact of this type of monitor. SQL Plan Cache viewing and snapshot
capabilities have also been added to provide access to the "always on" statement information cache. These
new and redesigned tools provide great detail while maintaining low system impact. These
improvements have eliminated the advantage the memory-resident database monitor once provided.
If you plan to continue working with the memory-resident database monitors, you can directly call the
memory-resident database monitor API interfaces.

On a V7R1 system, IBM Navigator for i
System Monitors
"The monitor function needs to run on V7R2M0 or later, The target system is V7R1M0."

These are reasons I'm still using MPG for perf monitoring.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Sue Baker
Sent: Wednesday, August 19, 2015 11:52 AM
To: midrange-l@xxxxxxxxxxxx
Subject: RE: IBM i Access for Web - Not yet a replacement for Navigator

"Jim Oberholtzer"
<midrangel@xxxxxxxxxxxxxxxxx>
wrote on Wed, 19 Aug 2015 14:48:39 GMT:

It sound to me that replacement of Management Central has to become a
significant topic at the CAAC

Jim, thank you for posting and suggesting bringing the issue to development through one of many channels. While I know there are other IBMers monitoring the conversations here, and I forward items to development when I spot things, the best way to get their attention is via CAAC, CEAC (COMMON Europe), ISV council, and the LUG in addition to design change requests.

Of course, opening PMRs for function which should work and doesn't is also important.

--
Sue
IBM North America Advanced Technical Sales Support (ATS) Power Systems Rochester, MN

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