To tune a database is useful to create snapshots that capture information from different structures/components of the instance.
In this post we show how they can be used to perform an analysis of tuning.
First of all, the monitor switches must be on to collect data from the different structures.
The state monitors are available as follows:
A 2019 survey by Synopsys found that 96% out of 1100 scanned codebases included open-source components. These open-source components come with some unique issues that could be putting your system at risk. This is particularly true if you’re unaware of their presence.
In this article, you’ll learn some considerations for using open-source components. You’ll also learn how to secure your components and minimize your risks..
Digital information is arguably the most important asset for modern businesses, from financial data to customer demographics. The potential loss of customer or business data carries too heavy a risk to ignore, from regulatory fines to loss of brand trust and customers.
Despite the risks, businesses are using an increasing number of network-connected devices, many of which are not centrally managed or protected. Such devices grant attackers more potential routes into a system and create more points for businesses to protect..
To give a specific format to the date obtained throught DB2 “current date”, you can use the following method.
Get date with European format..
SQL sentence to obtain the SQL TOP TEN with more executions of my BD2 database:
db2 "SELECT NUM_EXECUTIONS as EXECUTIONS,
AVERAGE_EXECUTION_TIME_S as TIME_SECONDS,
STMT_TEXT as TEXT
FROM SYSIBMADM.TOP_DYNAMIC_SQL
WHERE upper(STMT_TEXT) like 'SELECT%'
ORDER BY NUM_EXECUTIONS DESC
FETCH FIRST 10 ROWS ONLY"
Every year, digital environments accumulate more and more data. Big data systems take in these huge amounts of raw data, and then turn it into meaningful information. These systems can operate on-premises or in the cloud.
Actually DB2TOP is a real-time tool, however many DBA’s don’t know that it can be run in REPLAY mode with captured session information. So, next time you have a big crisis with your database, you can capture all the data from db2top and do the analysis afterwards.
How to capture the data? Option -C to capture. Press N to create a file. The option “-m” to gather data during n minutes.
DB2 command line utility has different options. In this post we show how to disable the autocommit of DML statements that by default is active. In case you want to do some test, for example, simulating the use of locks could be helpful to disable this feature.
Options from DB2 command line can be obtained with the following sentences:
SQL Command to obtain the Top Ten of SELECT SQL sentences with more execution time in your DB2 database:
db2 "SELECT AVERAGE_EXECUTION_TIME_S as TIME_SECONDS,
NUM_EXECUTIONS as EXECUTIONS,
STMT_TEXT as TEXT
FROM SYSIBMADM.TOP_DYNAMIC_SQL
WHERE upper(STMT_TEXT) like 'SELECT%'
ORDER BY AVERAGE_EXECUTION_TIME_S DESC
FETCH FIRST 10 ROWS ONLY"
Every time it’s more common SAP environments running with DB2.
Attached a video regarding the capabilities of DB2 with BLU Acceleration applied to SAP and all SAP notes to consider.
Surprising comparative with SAP HANA, and as with less complexity and investment, you get more performance.
Pay attention to the comparison with SAP HANA:
Attached also the IBM Redbook Architecting and Deploying DB2 with BLU Acceleration.
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