1.数据库连接没写对
2.缺少驱动的jar包
您还没有登录,请您登录后再发表评论
databaseName=TestJavaOdbc"; Connection conn = DriverManager.getConnection(url); ``` #### 使用ODBC连接 除了直接使用JDBC驱动外,还可以通过ODBC桥接的方式连接SQL Server: 1. **加载ODBC驱动**: ```...
初始为500,结果还是错误, 在修改为36000,并且加大了c3p0连接数cpool.maxPoolSize=100 这个时候出现下面错误现象2 Connections could not be acquired from the underlying database! 一直没有定位出来,靠,
Connections could not be acquired from the underlying database,在正确导入所需jar包和安装合适版本的tomcat后,出现该问题,大多数是数据库连接部署,要仔细审查一下数据库配置
10. **Connections could not be acquired from the underlying database** 无法从底层数据库获取连接,这可能是由于数据库URL配置错误、网络问题或数据库服务未启动等原因造成的。检查数据库连接参数和数据库...
To make use of either more or less strict isolation levels in applications, locking can be customized for an entire session by setting the isolation level of the session with the SET TRANSACTION ...
相关推荐
databaseName=TestJavaOdbc"; Connection conn = DriverManager.getConnection(url); ``` #### 使用ODBC连接 除了直接使用JDBC驱动外,还可以通过ODBC桥接的方式连接SQL Server: 1. **加载ODBC驱动**: ```...
初始为500,结果还是错误, 在修改为36000,并且加大了c3p0连接数cpool.maxPoolSize=100 这个时候出现下面错误现象2 Connections could not be acquired from the underlying database! 一直没有定位出来,靠,
Connections could not be acquired from the underlying database,在正确导入所需jar包和安装合适版本的tomcat后,出现该问题,大多数是数据库连接部署,要仔细审查一下数据库配置
10. **Connections could not be acquired from the underlying database** 无法从底层数据库获取连接,这可能是由于数据库URL配置错误、网络问题或数据库服务未启动等原因造成的。检查数据库连接参数和数据库...
To make use of either more or less strict isolation levels in applications, locking can be customized for an entire session by setting the isolation level of the session with the SET TRANSACTION ...