Query Analysis Services DMV (DISCOVER_LOCKS) with OPENQUERY SQL Server 2012

Question

Hi, I'm having trouble with a specific DMV, $SYSTEM.DISCOVER_LOCKS, while querying it using T-SQL OPENQUERY.
For example, this query will run just fine:
select * from openquery(OLAP_SERVER, 'SELECT * FROM $SYSTEM.DISCOVER_CONNECTIONS')
But when I try:
select * from openquery(OLAP_SERVER, 'SELECT * FROM $SYSTEM.DISCOVER_LOCKS')
I get the following error:
OLE DB provider "MSOLAP" for linked server "OLAP_SERVER" returned message "Internal error: An unexpected error occurred in conversion.".
OLE DB provider "MSOLAP" for linked server "OLAP_SERVER" returned message "An error occurred while parsing the 'C5' element at line , column ('urn:schemas-microsoft-com:xml-analysis:rowset' namespace) under Envelope/Body/ExecuteResponse/return/root/row/(any).".
Msg 7320, Level 16, State 2, Line 3
Cannot execute the query "SELECT * FROM $SYSTEM.DISCOVER_LOCKS" against OLE DB provider "MSOLAP" for linked server "OLAP_SERVER".
Similar problems [*] were present on SQL Server 2008, but the author obviously managed to execute queries to all DMV-s. Could the linked server properties play a role in this?
[*] I am not able to post links or images at the moment until my account is verified, but I was referring to an article by Vidas Matelis, "SSAS 2008 DMVs – querying from the
SQL Server and database diagrams"

Answer 1

Hi Frodik,
Generally, the reason for the error “Cannot execute the query "XX" against OLE DB provider "XX" for linked server "XX"” can be lack of sufficient memory on server. Also possibly running into an SSAS issue which could
be bringing lots of data into cache. So in your scenario, if you server is X86 server, you can migrate it to X64 server which should help. If you server is X64 server, you can avoid this issue by increasing available memory.
Hope this helps.
Regards,
Charlie Liao
TechNet Community Support