用户请求连接数据库时,首先会连接到CONNECTION BROKER进程,broker进程根据连接信息从连接池中选择pool server,将其分配给请求用户,此后,用户直接和pool server通信,broker不再参与其中,直至用户断开连接,将pool server归还给连接池。
commons-dbcp-1.2.1.jar, commons-pool-1.2.jar, commons-collections-3.1.jar。 配置参数。 Java API: BasicDataSourceFactory.createDataSource(properties); package cn.itcast.jdbc; import java.io.InputStream; import java.sql.Connection; import java.sql.ResultSet; import java.sql.SQLException; import j...
When there are a large number of concurrent database connections, a large number of resources are occupied, and the performance of the MySQL server deteriorates significa
jdbc:postgresql://host:port/database?sslmode=require Connection cannot be converted to BaseConnection when the connection pool is used to obtain connections in the CopyManager scenario Possible cause: BaseConnection is a non-public class. The connection pool object needs to be unwrapped to obtain ...
Use shared database links to connect to a database resident connection pool 使用高级安全选项,如加密等 利用OCI_MIGRATE或者 OCIConnectionPool实现可迁移的session DDL statements that pertain to database users in the pool need to be performed carefully, as the pre-DDL sessions in the pool can still...
Is the connection pool dynamic? Yes, the pool can be setup to dynamically change the number of Connections in the pool depending on the load. Can I connect to multiple database systems at the same time? Of course, libzdb is the perfect glue layer between different database systems or datab...
Is the connection pool dynamic? Yes, the pool can be setup to dynamically change the number of Connections in the pool depending on the load. Can I connect to multiple database systems at the same time? Of course, libzdb is the perfect glue layer between different database systems or datab...
Confluence supports using Tomcat as a database pool manager. This is commonly referred to as a Tomcat datasource. Full documentation on how to change to this connection manager can be found atConfiguring a datasource connection This works around the behaviour seen inC3P0and will allow disp...
commons-dbcp-1.2.1.jar, commons-pool-1.2.jar, commons-collections-3.1.jar。 配置参数。 Java API: BasicDataSourceFactory.createDataSource(properties); package cn.itcast.jdbc; import java.io.InputStream; import java.sql.Connection; import java.sql.ResultSet; ...
The MySQL Connector/NET supports connection pooling for better performance and scalability with database-intensive applications. This is enabled by default. You can turn it off or adjust its performance characteristics using the connection string optionsPooling,Connection Reset,Connection Lifetime,Cache Ser...