You can see the parameters in your init file in one of two ways from a client machine. In SqlPlus or svrmgrl issue "show parameters", or issue "select * from v$parameter". TNSNames parameters should be located and visible on the client machine using OS commands. Viewing directory structures on the server machine is not something Oracle does explicitly, nor does it need to. Those directories which affect things such as redo log storage locations, archive log locations, control file locations are all listed in the init. file. If you need to edit listener file parameters, this would need to be done on the server machine (unless DBA studio will do it.....I don't know this product.)