Description
bool 
oci_execute ( resource stmt [, int mode] )
     oci_execute() executes a previously parsed
     statement (see oci_parse()). The optional
     mode allows you to specify the
     execution mode (default is OCI_COMMIT_ON_SUCCESS). 
     If you don't want statements to be committed automatically, 
     you should specify OCI_DEFAULT as your
     mode.
    
     When using OCI_DEFAULT mode, you're creating a 
     transaction. Transactions are automatically rolled back when you close 
     the connection, or when the script ends, whichever is soonest. You
     need to explicitly call oci_commit() to commit 
     the transaction, or oci_rollback() to abort it.
    
     Returns TRUE on success or FALSE on failure.
    
Note: 
      In PHP versions before 5.0.0 you must use ociexecute() instead. 
      This name still can be used, it was left as alias of
      oci_execute() for downwards compatability. 
      This, however, is deprecated and not recommended.