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Although the feature was enabled by mimicking a sysplex,, it is impossible to apply in the real world.The first reason is that the performance overhead is too much when switching from the not shared state to the shared stateSecondly, it is impossi...
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The option ordinality is used in XML queries but the overall performance is very slow
We use the for ordinality option in our queries but the over all performance is very poor.There is a specific XSCAN needed when ordinality is specified which takes a long time. this XSCAN produces a sequence of XML ELEMENTS. This sequence is then ...
Need to support inplace reorg on partitioned table with global indexes
This is critical in a 2 sense; 1) Performance The customer has many range-partitioned table with global indexes and most of them left unreorganized because INPLACE REORG on Inplace reorg on range-partitioned table with a global index is not suppor...
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...
We would like functional/partial indexes, that is indexes that include a where clause. Currently when there is an index that includes a condition we have to put the condition as part of a field (NAME_IS_BLANK) and then include that conditional fie...
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