Migration from 5.7 to 6.2.0.2- update fails

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While migrating from Hybris 5.7 to 6.2.0.2 which is the latest version, while server is booting we are seeing the below issue. Caused by: java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:3181) at java.util.ArrayList.grow(ArrayList.java:261) at java.util.ArrayList.ensureExplicitCapacity(ArrayList.java:235) at java.util.ArrayList.ensureCapacityInternal(ArrayList.java:227) at java.util.ArrayList.add(ArrayList.java:458) at de.hybris.platform.persistence.property.PersistenceInfoCache.getAllSuperTypes(PersistenceInfoCache.java:189) at de.hybris.platform.persistence.property.PersistenceInfoCache.clearExternalTableTypeCacheFor(PersistenceInfoCache.java:201) at de.hybris.platform.persistence.property.PersistenceInfoCache.putCachedInfo(PersistenceInfoCache.java:149) at de.hybris.platform.persistence.property.DBPersistenceManager.cacheInfo(DBPersistenceManager.java:1127) at de.hybris.platform.persistence.property.DBPersistenceManager.loadAllTypes(DBPersistenceManager.java:644) at de.hybris.platform.persistence.property.DBPersistenceManager.loadPersistenceInfosInternalInTX(DBPersistenceManager.java:612) at de.hybris.platform.persistence.property.DBPersistenceManager.loadPersistenceInfosSafe(DBPersistenceManager.java:567) at de.hybris.platform.persistence.property.DBPersistenceManager.loadPersistenceInfos(DBPersistenceManager.java:537) at de.hybris.platform.core.AbstractTenant.doStartupSafe(AbstractTenant.java:722) at de.hybris.platform.core.AbstractTenant.doStartUp(AbstractTenant.java:668) at de.hybris.platform.core.Registry.assureTenantStarted(Registry.java:649)