HTTP Status 500 - Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is o

public class Main {@Testpublic void main() {// write your code hereint sum=0;for(int i=0;i5;i++){sum+=i;}System.out.print(sum);}

一.监听重启步骤：打开终端切换帐户#su - oracle启动监听$lsnrctl start关闭监听$lsnrctl stop切换帐户一定要加 "-"否则会出现：bash:lsnrctl:command not found.错误二.Linux下oracle数据库启动和关闭操作第一步：登陆root登陆之后切换到oracl...