Community Articles

VidyaSargur · ‎05-09-2023

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 :

With the following input parameters:

select * from user_master

Create the DBCPConnectionPool Controller Service:

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,

go to https://www.oracle.com/database/technologies/appdev/jdbc-downloads.html

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 .

3) Run

Run once:

Check Provenance

4) Write to HDFS

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

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

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';

steven-matison · ‎05-10-2023

@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.

Cloudera Community

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Get data from Oracle by Apache NiFi , then save to Hive Parquet External Table

Apache NiFi

1) Prepare Oracle Data (Optional)

2) Add Processor

Download JDBC Driver:

3) Run

Check Provenance

4) Write to HDFS

5) Write to Hive External Table

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