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NiFi - Oracle Connect
Processor: ExecuteSQL

1) Prepare Oracle Data (Optional)

Prepare the data, and create the Oracle table:

 

CREATE TABLE USER_MASTER
(
  USER_ID           VARCHAR2(8) NOT NULL,
  DEPT_NO           VARCHAR2(8),
  USER_NAME         VARCHAR2(32),
  CREATED_ON        DATE DEFAULT SYSDATE,
  MODIFIED_ON       DATE,
   CONSTRAINT pk_USER_MASTER PRIMARY KEY(USER_ID)
);

 

Insert the data into Oracle Table:

 

INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 1 Ro','1001','1');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 2 Ro','1001','2');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 3 Ro','1001','3');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 4 Ro','1001','4');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 5 Ro','1001','5');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 6 Ro','1001','6');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 7 Ro','1001','7');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 8 Ro','1001','8');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 9 Ro','1001','9');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 10 Ro','1001','10');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 11 Ro','1001','11');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 12 Ro','1001','12');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 13 Ro','1001','13');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 14 Ro','1001','14');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 15 Ro','1001','15');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 16 Ro','1001','16');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 17 Ro','1001','17');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 18 Ro','1001','18');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 19 Ro','1001','19');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 20 Ro','1001','20');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 21 Ro','1001','21');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 22 Ro','1001','22');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 23 Ro','1001','23');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 24 Ro','1001','24');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 25 Ro','1001','25');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 26 Ro','1001','26');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 27 Ro','1001','27');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 28 Ro','1001','28');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 29 Ro','1001','29');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 30 Ro','1001','30');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 31 Ro','1001','31');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 32 Ro','1001','32');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 33 Ro','1001','33');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 34 Ro','1001','34');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 35 Ro','1001','35');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 36 Ro','1001','36');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 37 Ro','1001','37');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 38 Ro','1001','38');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 39 Ro','1001','39');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 40 Ro','1001','40');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 41 Ro','1001','41');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 42 Ro','1001','42');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 43 Ro','1001','43');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 44 Ro','1001','44');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 45 Ro','1001','45');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 46 Ro','1001','46');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 47 Ro','1001','47');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 48 Ro','1001','48');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 49 Ro','1001','49');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 50 Ro','1001','50');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 51 Ro','1001','51');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 52 Ro','1001','52');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 53 Ro','1001','53');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 54 Ro','1001','54');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 55 Ro','1001','55');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 56 Ro','1001','56');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 57 Ro','1001','57');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 58 Ro','1001','58');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 59 Ro','1001','59');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 60 Ro','1001','60');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 61 Ro','1001','61');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 62 Ro','1001','62');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 63 Ro','1001','63');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 64 Ro','1001','64');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 65 Ro','1001','65');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 66 Ro','1001','66');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 67 Ro','1001','67');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 68 Ro','1001','68');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 69 Ro','1001','69');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 70 Ro','1001','70');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 71 Ro','1001','71');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 72 Ro','1001','72');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 73 Ro','1001','73');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 74 Ro','1001','74');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 75 Ro','1001','75');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 76 Ro','1001','76');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 77 Ro','1001','77');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 78 Ro','1001','78');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 79 Ro','1001','79');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 80 Ro','1001','80');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 81 Ro','1001','81');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 82 Ro','1001','82');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 83 Ro','1001','83');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 84 Ro','1001','84');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 85 Ro','1001','85');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 86 Ro','1001','86');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 87 Ro','1001','87');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 88 Ro','1001','88');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 89 Ro','1001','89');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 90 Ro','1001','90');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 91 Ro','1001','91');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 92 Ro','1001','92');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 93 Ro','1001','93');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 94 Ro','1001','94');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 95 Ro','1001','95');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 96 Ro','1001','96');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 97 Ro','1001','97');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 98 Ro','1001','98');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 99 Ro','1001','99');
INSERT INTO USER_MASTER (USER_NAME, DEPT_NO, USER_ID) VALUES ('Hayashi 100 Ro','1001','100');

 

2) Add Processor

Add an ExecuteSQL Processor :
Pic0.png
With the following input parameters:
Pic1.png

 

select * from user_master

 

Create the DBCPConnectionPool Controller Service: 
Pic2.png

 

jdbc:oracle:thin:@zzeng-*******.com:1521:svcname
oracle.jdbc.driver.OracleDriver
/opt/nifi/jdbc/ojdbc8.jar

 

Be careful about the "svcname" above, you must input the correct Oracle service name.

Download JDBC Driver:

To get the ojdbc8.jar,
zzeng_0-1683645538917.png

 

wget https://download.oracle.com/otn-pub/otn_software/jdbc/219/ojdbc8-full.tar.gz
tar xvf ojdbc8-full.tar.gz
sudo mkdir -p /opt/nifi/jdbc/
sudo chown nifi:nifi /opt/nifi/jdbc/
sudo chmod 755 /opt/nifi/jdbc/
cd /opt/nifi/jdbc/
sudo cp /home/centos/oracle-connect/ojdbc8.jar .

 

Pic3.png

3) Run

Run once:

zzeng_1-1683645584735.pngzzeng_2-1683645596127.png

 

Check Provenance

zzeng_3-1683645613385.png

 

4) Write to HDFS

4-1-HDFS.png
zzeng_0-1683695966519.png

Hadoop Configuration Resources:

 

/etc/hadoop/conf/hdfs-site.xml,/etc/hadoop/conf/core-site.xml

 

Directory:

 

/tmp/nifi/

 

Check result:

 

[centos@cdp conf]$ hdfs dfs -ls /tmp/nifi/
Found 2 items
-rw-r--r--   1 nifi supergroup       5268 2023-05-10 04:52 /tmp/nifi/78338e0b-27b4-4b44-b406-c5b1cada12eb
-rw-r--r--   1 nifi supergroup       5268 2023-05-10 05:16 /tmp/nifi/ca5756c4-0e9e-480c-abf5-050b731493fb
[centos@cdp conf]$

 

5) Write to Hive External Table

 

zzeng_0-1683722579245.png

1)Get data from Oracle(Avro Format output)
ExecuteSQL Processor
2)Convert from Avro to Parquet

Use  ConvertAvroToParquet Processor
3)Write Parquet data to the external Hive Table

PuTHDFS

zzeng_1-1683722689323.png

zzeng_2-1683722697407.png

Prepare Hive Table:

 

CREATE EXTERNAL TABLE DEMO.USER_MASTER
(
  USER_ID           STRING,
  DEPT_NO           STRING,
  USER_NAME         STRING,
  CREATED_ON        STRING ,
  MODIFIED_ON       STRING
) 
STORED AS PARQUET
LOCATION '/tmp/data/parquet';

 

zzeng_3-1683722734015.png

 

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Comments

@zzeng Great article.  Reach out to me on internal channels.  I would love to show you my oracle to kudu demo, using kafka and schema registry.