- #HOW TO FIND ALL THE PROCESS RUNNING SAP HANA STUDIO HOW TO#
- #HOW TO FIND ALL THE PROCESS RUNNING SAP HANA STUDIO SOFTWARE#
In relation to the HANA Studio Hang, the solution for this can be found by searching the SQL Query generated which will return the Note High CPU when opening admin console (Also if you have to open an incident with SAP this information will be what the engineer will be looking for) These queries can then either be searched on the SAP search or you can check to see if these are your own custom queries which need to be looked at it terms of optimization. The dumps will show you what exact queries were running at the time of the hang / freeze. See Troubleshooting High CPU for further info.Īs the HANA Studio will more than likely be hanging during the hang / slow performance, you can use SSH to run the Runtime Dumps with 2 minute intervals through the means of this hdbsql script:ĭATE=`date +%Y%m%d.%H%M%S` for PID in `ps x|grep -E “hdb(index)server”|grep -v grep|awk ‘.dump doneĪfter running the script you can then open the generated RTE dumps. These threads then link you back to short stacks which then can checked to see what exactly this stack is doing.
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The thread of this SQL query can then be checked via the parent and also its child threads. Large Query plans can indicate problematic SQL Queries. Runtime Dumps can useful for the following situations:īy checking a RTE dump you can look for certain key indicators such as Large Query plans. The first thing you have to think of when you face this situation is to execute Runtime Dumps immediately. THP will make HANA run quicker for a while but when it comes to splitting THP’s, the system gets so slow that working with it is not possible. Transparent Huge Pages must be deactivated. The most probable reason for this is outside HANA. If this is high, then we have to find out why?. The remaining cache size is (in general) not available for HANA. When checking the cache size (top command) please remember that HANA shared memory is also booked as “shared”. So it is important that HANA is really assigned the memory up to the GAL and nothing else using this.Ī large file cache can lead to problem. Other non HANA processes or other instances can interfere with the HANA system. What you have to remember is that HANA limits its memory usage by the Global Allocation Limit.
#HOW TO FIND ALL THE PROCESS RUNNING SAP HANA STUDIO SOFTWARE#
Like all other software systems, SAP HANA relies on hardware to run its processes. Application is hanging but new connections to the database are still possible (Possibly not a HANA DB issue which must be analysed from an application perspective before looked at from a HANA DB perspective).Database hangs during startup and does not start up.
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So what constitutes a hanging situation in HANA? When we talk about a hanging situation we generally refer to a whole system wide hang, as opposed to highlighting one specific activity, ie: queries or operations.
#HOW TO FIND ALL THE PROCESS RUNNING SAP HANA STUDIO HOW TO#
The purpose of this document is to instruct SAP customers on how to analyse hanging situations in their HANA system.