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When doing a snapshot from a storage array, if the server contains a DB2 instance running, there is no certainty that the snapshot contains a consistent copy of the database.

To launch a snapshot and ensure consistent copy in DB2 is possible to put the database at “write suspend”, that is, it overrides the disk access in write mode, and work in the buffer pool memory. Queries whether it will record but writes are performed only in memory.

Maybe there are other methods, in this short article, a simple way to know the port that serves DB2 server.

We get the name of the service TCP / IP:

> db2 get dbm cfg | grep SVCENAME

Capture the result:

TCP/IP Service name (SVCENAME) = db2TRP

Look at /etc/services:

> cat /etc/services | grep sapdb2QRP

db2TRP 5912/tcp # DB2 Communication Port

The listening port is 5912!

Through DB2 we can get the average time in ms disk access is having DB2. These times are crucial for the detection of a IO problem with DB2 instance.

Usually we take into consideration that a value close to 2-3ms is good, more than 10ms can indicate problems.

Avg ms/write:

select trunc(decimal(sum(pool_write_time))/decimal(

(sum(pool_data_writes)+sum(pool_index_writes))),3)

from sysibmadm.snaptbsp

Avg ms/read:

This article will discuss how supply chains are being improved through the use of innovative technologies before highlighting five uses of artificial intelligence and machine learning in supply chains.

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This article will describe the relevance of open source software and big data before describing five interesting and useful open source big data tools and projects.

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The widespread adoption of Big Data analytics workloads over the past few years has been driven, in part, by the open source model, which has made frameworks, database programs, and other tools available to use and modify for those who want to delve into these big data workloads..

Tiered storage is a way of managing data by assigning it to different types of storage devices/media depending on the current value that the underlying information provides. The efficient management of data recognizes that all information provides an intrinsic value from the time it’s created to the time it becomes obsolete and that this value changes over the information lifecycle.

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