udl file is created and the database is configured. This is the code automatically generated after the connection. Provider = sqloledb.1 persist Security info = false user id = sa initial catalog = jbdatabase0 Data Source = jiabao9/jiabao9 Everything after this line is an ole db initstring When a database server with different names is installed in another LAN, right-click the connection. You can simply copy the application without configuring the connection. If you want to distribute applications to the LAN for use, the database server does not change. Showmessage ('Connection failed, please reconfigure pymee. provider: = extractfilepath (paramstr (0) + '/pymee. connectionstring: = 'file name = '+ extractfilepath (paramstr (0) +'/pymee. The oncreate event of form1 is as follows:Īdoc. Use the Delphi control tadoconnection connection code: After the configuration is complete, exit.ģ. udl and follow the prompts to configure the database. Right-click - New - Text Document and rename it connection. If we need to add more configuration properties, we should check the UCPDataSource JavaDoc or the developer's guide. -pool-size specifies the maximum number of available and borrowed connections that our pool is maintaining.-pool-size specifies the minimum number of available and borrowed connections that our pool is maintaining, and.-pool-size specifies the number of available connections created after the pool is initiated.In the above example, we've customized some pool properties: for-validate-connection=select * from dual Now we only have to add our configuration into the application.properties file: # UCP settings If we want to use UCP, we need to add the following Maven dependencies: It also gives us a set of properties for customizing pool behavior. It reuses the connections instead of creating new ones. Oracle Universal Connection Pool (UCP) for JDBC provides a full-featured implementation for caching JDBC connections. As of version 21.1.0.0 of UCP, this is the easiest way of doing it. If we want to use advanced configurations, we can declare the UCP datasource and set the remaining properties in the application.properties file. The JPA settings section is some basic configuration for using Hibernate.In case we need advanced configuration we should check the HikariCP configuration property list The HikariCP settings section is where we configure the HikariCP connection pooling.The OracleDB connection settings section is where we configured the JDBC connection properties as we always do.new-id-generator-mappings=falseĪs you can see, we have three different section configuration settings: Now we only have to add our configuration into the application.properties file: # OracleDB connection HikariCP settings The spring-boot-starter-data-jpa dependency includes the spring-boot-starter-jdbc dependency transitively for us. Therefore, if we take a look into our pom.xml we'll see: The spring-boot-starter-data-jpa dependency includes HikariCP as the preferred pooling data source. The easiest way for connection pooling with Spring is using autoconfiguration.
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