OpenQuery not working after applyin SQL Server SP4

SELECT * FROM openquery( OLAP_PLS,'SELECT { [Measures].[Produced Qty] } ON COLUMNS , { [Time].[Year].&[2007].&[1].&[2] } ON ROWS FROM [Employee]')

Issue:

We have Linked Server setup to OLAP Server. which was working fine for long time. After applying SP4 on SQL Server, we started getting this error. But the same query runs from another server with SP3.

After applying SP4, I have also applied 2 hotfixes to SQL Server. One hot fix is related to using using memory more than 3GB and another hotfix is for this Linked server issue. but still I have the problem.

SELECT * FROM openquery( OLAP_PLS,'SELECT { [Measures].[Produced Qty] } ON COLUMNS , { [Time].[Year].&[2007].&[1].&[2] } ON ROWS FROM [Employee]')

Error:

Server: Msg 7399, Level 16, State 1, Line 1
OLE DB provider 'MSOLAP' reported an error.
[OLE/DB provider returned message: Database 'PLS' does not exist.]
OLE DB error trace [OLE/DB Provider 'MSOLAP' IDBInitialize::Initialize returned 0x80004005: ].

Appreciate your help.

Thanks,

Varad

sql