[1,018] Data store unknown error: [Error occurred while accessing the model provider. ?

Hi ,

When creating DataTable with service dynamically,  I sometimes get the error "[1,018] Data store unknown error: [Error occurred while accessing the model provider." . 

var params = {
name: dataTableName,
description: "",
thingTemplateName: "DataTable",
};

Resources["EntityServices"].CreateThing(params);

Things[dataTableName].SetDataShape({ name: shapeName });
//Things[dataTableName].SetProjectName({ projectName: "ABCD" });

Things[dataTableName].EnableThing();
Things[dataTableName].RestartThing();

Things[dataTableName].SetPersistenceProvider({
name: persistentProvider
});

Resources["EntityServices"].AddShapeToThing({
name: dataTableName /* THINGNAME */,
thingShapeName: "LockableThing" /* THINGSHAPENAME */
});

Things[dataTableName].EnableThing();
Things[dataTableName].RestartThing();

And, if error occurs, I have the following exception handling to rollback: 

 var params = {
name: dataTableName /* THINGNAME */
};
try{
Resources["EntityServices"].DeleteThing(params);
logger.debug("Rollback data table "+dataTableName + "finished");
}catch(error2){
logger.debug("fail to rollback data table "+dataTableName + ". Error: " + error2 ); // result: INFOTABLE dataShape: "EntityReference"
var existingGhostEntities = 
Resources["GhostEntitiesResource"].GetGhostEntities({
deleteGhosts: true /* BOOLEAN */
}); 
}

Even though,  if the error "Data store unknown error" occurs then it will always occur unless restart tomcat .  Any suggestion ? 

Thingworx 8.4.2 + Postgresql 10.x

Regards,

Sean