Hana System Catalog - Pending - Fetching children issue (Win x.64)
The dreaded "catalog pending - fetching children" issue, reported by several users in version 6.X (SAP HANA STUDIO Not Responding), has returned. Disheartening is an understatement.
As advised in the linked thread, executing the following in an SQL console does not complete/return a result set.
SELECT * FROM PUBLIC.SCHEMAS;
or
SELECT COUNT(*) FROM PUBLIC.SCHEMAS;
Note my AWS instance sizing is m2.4xlarge. Just checking linked thread for statistics server fix, originally stated by Wolfgang Auer on 27/09/2013:
"the root cause is that with the stat server as a seperate process the query on schemas is getting distributed. With SP7 we move the catalog of stat service into the main index server.
Like this the current situation can not occur any more.
For the moment the only workaround will be to give the stat server enough memory so the distributed query can be processed.
If you don't need the stat server at all you can remove it from the topology.
BUT this will break you back up history!"
As supplied by Wilfgang the original workaround went something like this (NOTE FOR SPS6):
altersystemalter configuration ('statisticsserver.ini','SYSTEM') set('statisticsserver_general','editing')='yes'with reconfigure;
;
altersystemalter configuration ('statisticsserver.ini','SYSTEM') set('memorymanager','allocationlimit')='20%';
;
altersystemalter configuration ('statisticsserver.ini','SYSTEM') unset ('statisticsserver_general','editing') with reconfigure;
;
select * from m_inifile_Contents wheresection = 'memorymanager'
;
altersystem stop service('<your server>',3<instance
number>05) immediate
;
=>>>>>>>>>>>>>>> WAIT SOME TIME >>>>>>>>>>>>>>>>>>>>
select * from m_service_statistics
;
select * frompublic.schemas
;
Is this workaround still relevant for SPS7 given that "With SP7 we move the catalog of stat service into the main index server"?
Many thanks.