Question: Hi I have date\_time column as "Factor" type which is having mixed date\_time as below. How to change these informats to R datetime format

```
date_time                  R_date_time
01-Apr-2017 12:00:00       2017-04-01 12:00:00 
02/04/2017  03:00:00       2017-04-02 03:00:00 
30/05/2017  06:15:00       2017-05-30 06:15:00
2/4/2017    05:18:00       2017-04-02 05:18:00
2017/12/31  20:30:00       2017-12-31 20:30:00

```

Answer: 
I have gotten the same error accessing a web service from a Java agent. In FP8+ another grant seems to be required in the `java.policy` or `java.pol` file:

```
   permission java.io.FilePermission "${java.home}/lib/-", "read";  

```

The `jaxws-tubes-default.xml` file is located in the `resources.jar` file in the lib folder. 

For my web service to be accessed from a Java agent on the domino server I now have a java.pol file with the following:

```
grant {
   permission java.lang.RuntimePermission "getClassLoader";
   permission java.lang.RuntimePermission "setContextClassLoader";
   permission java.lang.reflect.ReflectPermission "suppressAccessChecks";
   permission java.io.FilePermission "${java.home}/lib/-", "read";  
};

```
I ran into another Java security related issue issue yesterday that might also be causing your problem. I'm using GSON to do JSON parsing, but after an upgrade to FP8 it stopped working and threw a security error:

```
Agent Manager: Agent  error: java.security.AccessControlException: 
  Access denied ("java.lang.RuntimePermission" "accessDeclaredMembers")

```

Since the FP8 upgrade als upgrades the JVM to Java 8, apparently something changed in the security model. The solution was to add this extra permission to my `java.pol` file:

```
grant {
   permission java.lang.RuntimePermission "accessDeclaredMembers";
};

```