Personal feeling this thing is better than Plsql, although the interface is a bit ugly, the whole use and plsql also not much difference, here is his position C:\oracle_11g\product\11.2.0\dbhome_1\sqldeveloper\ Sqldeveloper.exe
The entire open interface looks like this.
But this thing needs to specify the location of the JDK before use, but also a bit strange, only use 32-bit 1.6 jdk, specify a good location after you can go in, first establish a connection, is the database inside the user's connection, right click New
Then enter a connection name and user name password can be, the new user is SYSASDBA on the click on new, this SYS is also pre-connected, after connecting the previous user can also write SQL statement Execution command, although there is no plsql function, but the basic is enough, And the screen is relatively concise, fresh, you can open multiple user windows at the same time
Install a 64-bit Oracle database using your own sqldeveloper