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new optimizer guideline to break CSE for a specific query or as a global guideline(RIMS)
Customer encountered scenario where use of CSE resulted in degradation in query performance (details below). This requirement is to implement a new optimizer guideline that will allow customer to break CSE for a specific query or as a global guide...
Calisto suggested if the MOD function FF issue is pervasive in the customer's environment, we could do an enhancement(under regvar maybe), so please ask for it. I will ask Satya to collect the stats across the partitions. The current stats shows a...
QReplication - ability to add columns with default values without having to Reorg(RIMS)
When adding a column with a default value, currently one must Reorg the table before replication of that column can begin: http://pic.dhe.ibm.com/infocenter/db2luw/v9r7/topic/com.ibm.swg.im.iis.repl.qrepl.doc/topics/iiyrqsubtchgadc1.html JPMC asks...
Parallel I/O work on indexes for SQL Inserts.(RIMS)
it would be wonderful to have parallel I/O work on indexes for SQL Inserts. For instance, a table with 6 indexes, A SQL insert is sent to DB2 from an app program,,, The Insert takes place on the data page, now the RID is known and can be used in p...
Ability to change an attribute on a cluster index(RIMS)
Verizon would like the ability to change an attribute on a cluster index without having to drop and recreate the inex. They need to avoid a rebind. IDS has this functionality. Ref PMR07542,442,000 Benefit: Verizon needs to avoid having to bring do...
View invalid but be able to check if the dependant object(RIMS)
If an object that a view is dependant on (table, UDF etc) is dropped Rather than becoming permanently inoperable the view should become invalid but be able to check if the dependant object has been restored the next time it is accessed. If the dep...
Ability to limit tablespace objects to specified schema-qualified names(RIMS)
As described in the 'transportable tablespaces' requirement, customer uses ï¿½ a 1:1 mapping between a schema and it's tablespaces. ï¿½ They want an option that will allow them to enforce this 1:1 mapping. For example, only objects with schema mys...
Enforce index name uniqueness at table level; not at schema level(RIMS)
currently all index names for a partiuclar schema must be unique. This is painful when there are tens of thousands of indexes. They want to be able to use duplicate schema names as long as the name is unique per table that the index is defined on.
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