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When issuing a sentence like:
db2 drop audit policy SELECT_ALL_TABLES
The returned error message does not include the schema of the problematic object:
SQL0478N The statement failed because one or more dependencies exist on thetarget object....
Latch information and more internals information for performance analysis
Detailed information about LATCH to DBA. More information of wait events would be good too like if a statement is waiting for a sequential read, how much the transaction is spending on network time , block concurrency, and so on.
IBM Data Studion needs extport/Extract from a select statement
Many people use IBM Data Studio to manage DB2 database. You can currently right click on a table and extract/export a tables contents. You cananot do the same using a select statement to say filter records or join tables for the export. Today peop...
Reproduce Scenario and found to be a expected behavior while CTAS locks syscat.tables session 1 > create table Table1 as (select * from Table_2 ) with data; session 2, query tool > select * from syscat.tables; --> lock waiting
Differentiate between Read and Write IO performance (Overhead and TransferRate) and optimise accordingly
Background: Db2 is sensitive to IO performance, and compiles access plans accordingly to optimise IO versus CPU costs. At the tablespace level, average Overhead and TransferRate are configured in units of milliseconds. Issue: customers such as our...
Add options for "recommend indexes" and "evaluate indexes" explain types to explain_from_section
When running explains from jupyter notebook, I prefer to use EXPLAIN_FROM_SECTION. However for in-depth analysis of indexes, I need the RECOMMEND INDEXES and EVALUATE INDEXES explain modes. These don't seem to exist for EXPLAIN_FROM_SECTION. This ...
Knowledge center should load content of previous and next articles automatically
When navigating the Knowledge Center, it is necessary to click on the left panel every single article. Some of them are very short to read, and it takes a lot of time to reload the whole page just for a single article. It would be easy if by click...
Tool db2batch should be able to display Number of rows affected
Often db2batch is used for tuning / benchmarking purposes and very often the number of affected rows is interesting.
Command line tool. 'db2'. provides the option to display the Number of rows affected, db2 -tvmf <SQL-DML-File>
$ db2 -t...
Sometimes the knowledgeCenter is not reacheable or it is not working for different reasons, and the access for the documentation becomes an issue. For this reason, I suggest to have the KnowledgeCenter downloadable as a Docker image, as it was pos...
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