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Connection to Oracle via TNS is not working

由 我是研究僧i 提交于 2019-12-01 08:43:58
M. Deinum

With your class you are basically disabling auto-configuration and thus rendering, a large part, of your application.properties useless.

There is nothing in your OracleConfiguration that isn't (or can be) automatically configured for you.

Note: I'm assuming 2 things, first you are using HikariCP as the connection pool and second you are using Spring Boot 1.4.x.

So for starters remove the OracleConfiguration class and fix the application.properties accordingly. 

# DataSource
spring.datasource.type=com.zaxxer.hikari.HikariDataSource

#JPA   
spring.jpa.hibernate.ddl-auto=validate

#Hibernate
spring.jpa.properties.hibernate.show_sql=true
spring.jpa.properties.hibernate.generate_statistics=true

You don't need the spring.datasource.driver-class-name as that will be derived from the URL.

In your application-oracle.properties (or whatever profile name you use) set the following 

# DataSource
spring.datasource.username=my_user
spring.datasource.password=xyz
spring.datasource.url=jdbc:oracle:thin:@MY_SERVICE

spring.datasource.hikari.dataSourceClassName=oracle.jdbc.pool.OracleDataSource
spring.datasource.hikari.dataSourceProperties.implicitCachingEnabled=true
spring.datasource.hikari.dataSourceProperties.fastConnectionFailoverEnabled=true

#JPA   
spring.jpa.database-platform=org.hibernate.dialect.Oracle10gDialect

This configures the oracle specific JDBC properties.

The spring.datasource.hikari.dataSourceProperties are needed to set the additional properties in the OracleDataSource.

This should allow Spring Boot to automatically create the DataSource and appropriate EntityManagerFactory without you needing to create a custom configuration class at all.

Update (Config without Hikari and plain OracleDataSource)

If you want to use the plain OracleDataSource instead of a connection pool you could remove the spring.datasource.type from the default application.properties and add the following to the application-oracle.properties. 

# DataSource
spring.datasource.type=oracle.jdbc.pool.OracleDataSource
spring.datasource.username=my_user
spring.datasource.password=xyz
spring.datasource.url=jdbc:oracle:thin:@MY_SERVICE

Which results in more or less the same as you manually configured.

Update #2

As you want to use TNS you also need to set a system property named oracle.net.tns_admin. (See this question).

So in your application initializer (if not set on your app server) you need to set it manually. 

private static determineAndSetTnsHome() {
    String tnsAdmin = System.getenv("TNS_ADMIN");
    if (tnsAdmin == null) {
        String oracleHome = System.getenv("ORACLE_HOME");
        if (oracleHome == null) {
            return; //failed to find any useful env variables            
        }
        tnsAdmin = oracleHome + File.separatorChar + "network" + File.separatorChar + "admin";
    }
    System.setProperty("oracle.net.tns_admin", tnsAdmin);
}

Call this method from your main and onStartup or configure method. This assumes you have the ORACLE_HOME or TNS_ADMIN variable set in your environment.

For some reason, for me only worked:

spring.datasource.url=jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=tcp)(HOST=TODO)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=TODO)))

instead of spring.datasource.url=jdbc:oracle:thin:@MY_SERVICE.

Also I'm calling the method determineAndSetTnsHome() suggested by the user M. Deinum in the accepted answer:

public static void main(String[] args) {
        SpringApplication.run(EvaApplication.class, args);
        determineAndSetTnsHome();
    }
标签
Oracle
spring-boot
tnsnames
tns
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