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A timeout occurs while acquiring shared access on the entity item while accessing the data in  MDM - Product 360
Problem Description
In Master Data Management (MDM) - Product 360, the client does not respond and no information is displayed. The following error message is displayed after 5 minutes:

[http-6398914] [CoreExceptionMapper] Timeout occured while trying to aquire shared access on entity item: com.heiler.ppm.std.core.entity.EntityProxyRevision@9399d84[EntityProxy=2333109[|]0001H8339,RevisionToken=RevisionToken[ID=1]] for 300 SECONDS.
Cause
The issue occurs due to the time the database takes to collect/provide the requested information to MDM - Product 360.
Solution
To resolve this issue, ensure that the database indexes are not fragmented and the database maintenance is not running when having this issue.
More Information
2019-01-28 08:01:30,590 ERROR [http-6398914] [CoreExceptionMapper] Timeout occured while trying to aquire shared access on entity item: com.heiler.ppm.std.core.entity.EntityProxyRevision@9399d84[EntityProxy=2333109[|]0001H8339,RevisionToken=RevisionToken[ID=1]] for 300 SECONDS. 
com.heiler.ppm.std.core.entity.EntityItemAccessTimeout: Timeout occured while trying to aquire shared access on entity item: com.heiler.ppm.std.core.entity.EntityProxyRevision@9399d84[EntityProxy=2333109[|]0001H8339,RevisionToken=RevisionToken[ID=1]] for 300 SECONDS. 
at com.heiler.ppm.std.core.internal.entity.DataGraphLocalLocker.aquireWithTimeout(DataGraphLocalLocker.java:271) 
at com.heiler.ppm.std.core.internal.entity.DataGraphLocalLocker.acquireRead(DataGraphLocalLocker.java:124) 
at com.heiler.ppm.std.core.entity.EntityManagerBaseImpl.readAliveOnlyDetailModel(EntityManagerBaseImpl.java:458) 
at com.heiler.ppm.std.core.entity.EntityManagerBaseImpl.readItem(EntityManagerBaseImpl.java:446) 
at com.heiler.ppm.std.core.entity.EntityProxyBaseImpl.getDetailModel(EntityProxyBaseImpl.java:641) 
at com.heiler.ppm.std.core.entity.EntityProxyBaseImpl.getDetailModel(EntityProxyBaseImpl.java:611) 
... ​
Applies To
Product: MDM - Product 360
Problem Type:
User Type:
Project Phase:
Product Version:
Database:
Operating System:
Other Software:

Reference
Attachments
Last Modified Date:2/8/2019 6:06 AMID:568160
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