小编sar*_*mar的帖子

我有一个MySQL转储,我试图恢复:

mysql -u"username" -p"password" --host="127.0.0.1" mysql_db < mysql_db

但是,这引发了一个错误:

ERROR 1115 (42000) at line 3231: Unknown character set: 'utf8mb4'

这是第3231-3233行:

/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_general_ci */ ;

我正在使用MySQL 5.1.69.我该如何解决这个错误？

当我只运行这些命令时,我遇到了一个问题.

远程服务器想要传递yes以在RSA文件中添加密钥,因为第一次建立连接scp.

命令如下

#!/bin/bash

scp  -P58222 root@IP:/root/K /N
/usr/bin/expect -c 'expect "\n" { expect "Are you sure you want to continue connecting (yes/no)?" }'
send "yes\r"
expect "$ "
send "exit\r"

实际上我在询问时必须在我的脚本中传递yes

无法建立主机'IP地址(IP地址)'的真实性.

RSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx.
Are you sure you want to continue connecting (yes/no)? 

您确定要继续连接(是/否)吗？

我怎么能摆脱这个问题？

同

scp -o  StrictHostKeyChecking=no

它还在问.

我想在mysql中创建新用户,

    create user 'saravanakumar'@'localhost' identified by 'saravanakumar';

它显示错误,

    ERROR 1396 (HY000): Operation CREATE USER failed for 'saravanakumar'@'localhost'

我读完之后

ERROR 1396(HY000):"jack"@"localhost"的操作CREATE USER失败

我删除了user.But我不能.它显示

    mysql> SELECT User FROM mysql.user;
    +---------------+
    | User          |
    +---------------+
    | root          |
    | saravanakumar |
    | saravanakumar |
    |               |
    | root          |
    | saravanakumar |
    |               |
    | root          |
    +---------------+
    8 rows in set (0.00 sec)

    mysql> FLUSH PRIVILEGES;
    Query OK, 0 rows affected (0.00 sec)

    mysql> SELECT User FROM mysql.user;
    +---------------+
    | User          | …

我在EJB Bean中有一个方法

@Override
public void checkReqPermission(List<String> req, MyContext context) 
              throws AccessControlException, Exception
{
 if(notAllowed)
 throw new AccessControlException("Unauthorized Access : User is 
              not permitted to execute command(s)");
}else{
...}

在另一方面,我需要捕获此ACE以进一步执行语句.

当我调用这种方法时会发生什么？我在server.log中有很多异常跟踪

 ERROR [org.jboss.as.ejb3.invocation] (ajp-space-52786b8b6d90/192.168.27.143:8009-4) JBAS014134: EJB Invocation failed on component ##EJB##  for method public abstract ###CLASS## ##METHOD###(Params,java.util.List,Context) throws java.lang.Exception: javax.ejb.EJBException: java.security.AccessControlException: Unauthorized Access : User is not permitted to execute command(s)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInNoTx(CMTTxInterceptor.java:191) [jboss-as-ejb3-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInNoTx(CMTTxInterceptor.java:237) [jboss-as-ejb3-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.notSupported(CMTTxInterceptor.java:299) [jboss-as-ejb3-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:212) [jboss-as-ejb3-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41) [jboss-as-ejb3-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4] …