Cache Refresh Error

019-06-04 17:29:49,123 ERROR [Thread-3163] [gluu.oxtrust.ldap.cache.service.CacheRefreshTimer] (CacheRefreshTimer.java:201) - Exception happe
ned while executing cache refresh synchronization
java.lang.OutOfMemoryError: GC overhead limit exceeded
        at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.addConditionWaiter(AbstractQueuedSynchronizer.java:1855) ~[?:
1.8.0_181]
        at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2068) ~[?:1.8.0_18
1]
        at java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467) ~[?:1.8.0_181]
        at com.unboundid.ldap.sdk.SearchRequest.process(SearchRequest.java:1164) ~[unboundid-ldapsdk-3.2.0.jar:3.2.0]
        at com.unboundid.ldap.sdk.LDAPConnection.search(LDAPConnection.java:3635) ~[unboundid-ldapsdk-3.2.0.jar:3.2.0]
        at org.gluu.site.ldap.OperationsFacade.searchImpl(OperationsFacade.java:342) ~[oxcore-ldap-3.1.6.Final.jar:?]
        at org.gluu.site.ldap.OperationsFacade.search(OperationsFacade.java:275) ~[oxcore-ldap-3.1.6.Final.jar:?]
        at org.gluu.site.ldap.persistence.LdapEntryManager.findEntries(LdapEntryManager.java:399) ~[oxcore-ldap-3.1.6.Final.jar:?]
        at org.gluu.site.ldap.persistence.LdapEntryManager.findEntries(LdapEntryManager.java:373) ~[oxcore-ldap-3.1.6.Final.jar:?]
        at org.gluu.site.ldap.persistence.LdapEntryManager.findEntries(LdapEntryManager.java:369) ~[oxcore-ldap-3.1.6.Final.jar:?]
        at org.gluu.site.ldap.persistence.LdapEntryManager.findEntries(LdapEntryManager.java:361) ~[oxcore-ldap-3.1.6.Final.jar:?]
        at org.gluu.oxtrust.ldap.cache.service.CacheRefreshTimer.loadSourceServerEntriesWithoutLimits(CacheRefreshTimer.java:826) ~[classes/:?
]
        at org.gluu.oxtrust.ldap.cache.service.CacheRefreshTimer.detectChangedEntries(CacheRefreshTimer.java:328) ~[classes/:?]
        at org.gluu.oxtrust.ldap.cache.service.CacheRefreshTimer.processImpl(CacheRefreshTimer.java:289) ~[classes/:?]
        at org.gluu.oxtrust.ldap.cache.service.CacheRefreshTimer.processInt(CacheRefreshTimer.java:196) [classes/:?]
        at org.gluu.oxtrust.ldap.cache.service.CacheRefreshTimer$Proxy$_$$_WeldSubclass.processInt(Unknown Source) [classes/:?]
        at org.gluu.oxtrust.ldap.cache.service.CacheRefreshTimer.process(CacheRefreshTimer.java:179) [classes/:?]
        at org.gluu.oxtrust.ldap.cache.service.CacheRefreshTimer$Proxy$_$$_WeldSubclass.process$$super(Unknown Source) [classes/:?]
        at sun.reflect.GeneratedMethodAccessor241.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
        at org.jboss.weld.interceptor.proxy.TerminalAroundInvokeInvocationContext.proceedInternal(TerminalAroundInvokeInvocationContext.java:5
1) [weld-core-impl-3.0.5.Final.jar:3.0.5.Final]
        at org.jboss.weld.interceptor.proxy.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:78) [weld-core-impl-3.0.5
.Final.jar:3.0.5.Final]
        at org.xdi.service.cdi.async.AsynchronousInterceptor$1.get(AsynchronousInterceptor.java:36) [oxcore-service-3.1.6.Final.jar:?]
        at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590) [?:1.8.0_181]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]