db2look -m -r
The “-r” option is used to generate db2look output without runstats command output. However, current db2look code cannot reset SYSSTAT.COLUMNS and SYSSTAT.INDEXES when -r is applied. As a result, SQL1227N sometimes occur when applying the mimic when COLCARD etc, and CARD for the table is inconsistent. In db2look up to version in V10.5 please use db2look -m without -r option or insert resetting SYSSTAT.COLUMNS and SYSSTAT.INDEXES manually in db2look output with “-m” and “-r”. This limitation will be changed in releases later than V10.5. In most cases it should not cause SQL1227N error, but still the error can occur when the statistics on the source system is inconsistent. Here are examples:
Why COLCARD is sometimes bigger than CARD after RUNSTATS?
Runstats may update unexpected HIGH2KEY and LOW2KEY statistic values which may cause SQL1227N
As documented in above technotes, you can bypass the error by setting following undocumented registry variable even if the statistics are inconsistent:
recycle the instance
This registry variable can be used from 9.7FP9/10.1FP4/10.5.
To run .NET Runtime Optimization Service:
schTasks /run /Tn “\Microsoft\Windows\.NET Framework\.NET Framework NGEN v4.0.30319 64”
export MANPAGER=”col -b | vim -c ‘set ft=man ts=8 nomod nolist nonu’ -c ‘nnoremap i <nop>’ -”
export MANPAGER=”col -b | vim -c ‘set ft=man ts=8 nomod nolist nonu noma’ -”
For gnu man:
export MANPAGER=”/bin/sh -c \”col -b | vim -c ‘set ft=man ts=8 nomod nolist nonu noma’ -\””
Monitoring and Tuning the Linux Networking Stack: Receiving Data
Some notes on the Oracle APPROX_COUNT_DISTINCT Function
Scaling up Cardinality Estimates in 22.214.171.124
HyperLogLog in Oracle
HyperLogLog — Cornerstone of a Big Data Infrastructure
SSMS now generally available
SQL Server Data Tools (SSDT) for Visual Studio 2015 is now generally available.
SQL Server 2016 now available!
Visual Studio Benefit – Developer Edition
Technet Evaluation Centre
SQL Server 2016 has a critical pre-requisite for updated Visual Studio VC++ 2013 Runtime Libraries.These do NOT come via Windows Update, they are a seperate download.