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Possibility to index only specific rows of one or more columns. This could be implemented with a WHERE clause in the index create statement and would rsult in a tiny index for exactly the rows you are interested in.
The reorg online process need to lock the table in order to conclude. This is not a problem when you dont have many transactions, but when you have a 24x7 intense workload you might have a huge impact on your application.
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Increase the maximum size of a LOB object per table or per table partition
SQL and XML limits https://www.ibm.com/support/knowledgecenter/SSEPGG_11.1.0/com.ibm.db2.luw.sql.ref.doc/doc/r0001029.html
The maximum size of a LOB object of 4 terrabyte leads to the necessity of partitioning the table just due to this limit. S...
In current design, when SQL statement accesses a table, the compression and expansion dictionaries of that table will be read into DBHEAP and kept there until database deactivation. For column-based table, the memory consumption may up to 100MB. i...
Recommend/evaluate indexes – more information for each index
This is a point for tuning with indexes -> Tuning with indexes is still very common and useful. While using recommend and evaluate indexes it is possible to investigate each recommended index by updating USE_INDEX column in the table ADVISE_IND...
I went to use this marvelous feature on windows.. and for my surprise external tables are not implemented for this platform :-( (v11.5) Why ? Please, add support for external tables usage on windows hosts as well .
Remove The Need To REORG A Table Up On Performing Table Alter/REORG Recommended Operations
Today when we perform certain operations aka REORG recommended operations against a table like adding columns, dropping columns, changing datatype of a column, altering NULLABILITY of a column etc. the table will be put in a state called REORG pen...
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