Installing Postgres JDBC Driver

You must install the required Postgres JDBC driver.

Download, extract, and copy the JDBC driver, renamed, to /usr/share/java/. If the target directory does not yet exist, create it.

Installing the Postgres JDBC Driver

Install the PostgreSQL JDBC driver. Download the JDBC driver from the official PostgreSQL JDBC Driver website: https://jdbc.postgresql.org/
Alternatively, if you would like to use the PostgreSQL JDBC driver version shipped with the OS repositories, run the following commands with a driver version that is compatible with the PostgreSQL Server version:
RHEL
```
sudo yum install postgresql-jdbc<compatible_version>
```
Ubuntu
```
sudo apt-get install libpostgresql-jdbc-java<compatible_version>
```
SLES
```
sudo zypper install postgresql-jdbc<compatible_version>
```
Rename the Postgres JDBC driver .jar file to postgresql-connector-java.jarand copy it to the /usr/share/java directory. The following copy command can be used if the Postgres JDBC driver .jar file is installed from the OS repositories:
```
cp /usr/share/java/postgresql-jdbc.jar /usr/share/java/postgresql-connector-java.jar
```
Confirm that the .jar file is in the Java share directory:
```
ls /usr/share/java/postgresql-connector-java.jar
```

Change the access mode of the .jar file to 644:

chmod 644 /usr/share/java/postgresql-connector-java.jar