oracle pl sql programming

Oracle SQL injection is an old security issue. Generally, enterprise applications only focus on Java-level writing specifications, such as preparedStatement, or directly filter out dangerous characters. In fact, when compiling PL/SQL functions or procedure, there are also injection problems. Let's discuss it briefly. F

PL/SQL subprograms include functions and procedures. The function here refers to the user-defined function, which is different from the system function. A subroutine is a PL/SQL block that completes a specific function. It is universal and can be called multiple times by different applications.

Content Define Collection type Declare Collection variables Initialize and reference Collection Reference Collection Element Assign a value to Collection Multi-dimensional Collection Compare Collection Collection Method Collection exception The significance of understanding Oracle collections is that when we develop applications using programming languages, we use a lot of built-in Collection typ

ExceptionE.printstacktrace (); }at this point there will be a problem is to take JDBC to connect the time will be reported invalid Username/password; logon deniedbut you in the SQL developer landing time is not a problem, and finally found that because the user type, before the type of SYSDBA, and after using the JDBC connection is the default normal login so back to the problem of landing, Create a new normal user oralter user XXX identified by XXXd

The first time to install Oracle, installed in the virtual machine, with PL/SQL dev connection to the remote database is always pop-up blank prompt box, online search for a long time, the solution is also a lot, but there is no way to solve my situation.No way, can only study, after about a day, or well done, write a summary.There are several possible solutions t

: Configure PL/SQL developer Start PL/SQL developer, In the Login window interface, click the Cancel button to make the main interface, click Tools->preferences, in the connection need to configure the following two parameters: oracle home:c:\

In a 64-bit Win8 system, the Pl/SQL connection Oracle setup tutorial, win8oracle On Windows 8 64-bit system, 64-bit Oracle is installed, but there is no 64-bit PL/SQL, And the Oracle d

When installing the Oracle database's PL/SQL tool, the computer name is the name of the user name that is automatically generated after reloading the system, as a programmer, there is a strong obsessive-compulsive disorder, you want to use their English name as the name of their computer, so the name of the computer changed; Results

)) (Connect_data = (SERVER = dedicated) (service_name = orawin) ))Of course, copy can also be obtained from the corresponding directory of the Oracle server already installed.4. After configuring these, open PL/SQL, click Cancel to not login, directly into the interface 5. Select Tools-preferences on the menu Configure the path to the

3--loop statement /* Web Oracle Database development must be pl/sql_2-4 Loop Loop Statement Prints the number 1-10 */ Set Serveroutput on DECLARE pnum number: = 1; Begin Loop Exit when pnum>10; Dbms_output.put_line (Pnum); Pnum: = Pnum +1; End Loop; End / Instance 3--for statement /* Web Oracle Database development must be p