corradodebari / pred_maintenance

Predictive Maintenance through MSET-SPRT

Predictive Maintenance through MSET-SPRT

This is a description to setup an environment to test Predictive Maintenance through MSET-SPRT on Oracle DBMS 20c in preview release.

Zeppelin setup:

Setup Apache Zeppelin environment for Oracle DB 20c using a docker image.

Install a Docker container in this way::

docker run -d -it -e GRANT_SUDO="yes" --user root -p 8080:8080  -v [YOUR_DIRECTORY]:/host  
          --name zeppelin apache/zeppelin:0.8.1

Get a copy of ojdbc8.jar, for example from SQLDeveloper, and save it in /zeppelin/interpreter/jdbc/ojdbc8.jar

Create a new interpreter:

Connect to http://localhost:8080 and from menu:

push the create button:

and chooe an Intepreter Name, for example osql , and jdbc as Interpreter Group:

then complete as follow:

In this case it has been used a "Service" as DB Connection, non a SID. To have an interpreter to run multiple SQL statements, create another one, for example: %script and check at True the field:

default.splitQueries

NOTE: In case of long running script, if you could receive this exception:

java.sql.SQLRecoverableException: No more data to read from socket
at oracle.jdbc.driver.T4CMAREngineNIO.prepareForUnmarshall(T4CMAREngineNIO.java:782)
at oracle.jdbc.driver.T4CMAREngineNIO.unmarshalUB1(T4CMAREngineNIO.java:427)

In this case you can convert the statement in a job, like in this example:

%osql
DECLARE
  X NUMBER;
begin
dbms_job.submit(
    X,
    'BEGIN test_model(1,25); END;',
     SYSDATE
    );
end;

and monitor the end of task with:

select job_name,job_action,start_date,end_date from USER_SCHEDULER_JOBS