DB2 pureScale Install Problem Determination
RSCT License Issue $ db2start 128 SQL1677N DB2START or DB2STOP processing failed due to a DB2 cluster services error DATA #9 : SQLHA Remote Command Output, PD_TYPE_SQLHA_COMMAND_RESPONSE, 3508 bytes...
View ArticleDB2 11.1 Rebuild TSA Resources
When you get errors like this: "SQL1517N db2start failed because the cluster manager resource states are inconsistent." or something like "Cluster manager resource states for the DB2 instance are...
View ArticleRebuild TSA Resources in HADR Environment
This is about how to rebuild TSA resources in HADR environment if you have used db2haicu in past but added resources such as tie-breaker disks that are not supported by the db2haicu tool. So, in case...
View ArticleAutomatic Client Reroute – Templates
Here are two templates that one can use to make Automatic Client Reroute to work properly in a HADR environment. Please note that these instructions are only valid for HADR pair in which the second...
View ArticleSQL fishing using WLM
The SQLs while DB2 is up and running can be captured in different ways such as: Query column STMT_TEXT from table functions such as MON_GET_ACTIVITY or WLM_GET_WORKLOAD_OCCURRENCE_ACTIVITIES, and...
View ArticleGPFS Disk Cleanup
During pureScale instance creation, you might run into instance creation failed condition. Under some circumstances, it is possible that db2icrt does not perform a proper clean-up for GPFS and it may...
View ArticleKernel upgrade and impact on pureScale
In Linux environment, it is a common practice to upgrade the kernel for security patches, vulnerability fixes etc. And if you are running a DB2 pureScale environment, it is likely that you are going to...
View ArticleHow to detect log full condition
I have seen working with hundreds of customers a chronic LOG FULL condition and the shortcut people use is to increase the LOGPRIMARY and LOGSECOND. This solution works well for a single unit of work...
View ArticleDB2 pureScale Health Check
More and more customers are now asking for some way to check the health of the DB2 pureScale system. Let’s just focus on few early diagnostics before we jump to the deep exploration at the SQL...
View ArticleDB2 pureScale instance creation hangs after GPFS
While creating DB2 pureScale instance, it appears that the node becomes unresponsive under RHEL 7.2. If you reboot the node and look at the /var/log/messages, you may notice these several messages:...
View ArticleDB2 pureScale – No Product License found
In db2diag, you may see this message – No product license found. Sample output: 2017-05-19-13.00.58.511626-240 E2575E1007 LEVEL: Severe PID : 35363 TID : 70366589481392 PROC : db2start INSTANCE:...
View Articledb2haicu disable / enable and scripting
It is recommended that you always update RSCT / TSA from db2 software media and not from IBM Fix Central. The reason – DB2 is tested and certified with the version that ships with the DB2 software. If...
View ArticleDB2 11.1 BLU with DPF Monitoring scripts
I just wrapped a very large PoC for BLU with DPF with very high ingestion rate (110K messages per second) and as well as very high volume point queries (1500 queries per second) and I used the...
View ArticleDB2 pureScale Utility Scripts
Most of the utility scripts here are given for Linux using bash shell. You can use them after making syntax changes from bash to ksh. Most of the script require that you create a node information file...
View ArticleDB2 Backup Tuning
One of my colleague Mukesh V Desai did backup tuning for a pureScale customer and just by making the following change, reduced the backup time from from 4.5 hours to 30 minutes. Original config: Number...
View ArticleIBM Claims Big Breakthrough in Deep Learning
A Fortune article by Barb Darrow. Few interesting highlights: IBM used 64 of its own Power 8 servers—each of which links both general-purpose Intel microprocessors with Nvidia graphical processors with...
View ArticleNew Era in Distributed Computing with Blockchains and Databases
C Mohan, IBM Fellow Mohan gave his opening key note address at the 37th IEEE International Conference on Distributed Computing Systems (ICDCS) in Atlanta (USA) on 6 June 2017. A new era is emerging in...
View ArticleDb2 pureScale netname does not exist
ERROR: DBI20122E The instance was not created or updated because the following netname does not exist: "node01.zinox.com". The above error might come from different reasons but our case was due to...
View ArticleBig Data Hype and Reality
I can not put a name to a customer but they spent millions to port their data warehouse to Hadoop and 1 year later rolled everything back to the Db2 again since their results were not matching and the...
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