oracle10.2：
--将过程重新编译为本地编译方式，提示有编译错误，经查提示未设置plsql_native_library_dir 参数
SQL> alter procedure p_xxxx compile plsql_code_type=native;
Warning: Procedure altered with compilation errors
SQL> show error
Errors for PROCEDURE ZZQ2.P_UPDATE_GRAPHCODE:
LINE/COL ERROR
-------- -----------------------------------------------
12/53 PLS-00920: 未设置 plsql_native_library_dir 参数
--因此设置plsql_native_library_dir参数，在oracle的home路径下创建nativelib文件夹（有的话就不用了）
SQL> alter system set plsql_native_library_dir='D:\oracle\product\10.2.0\db_2\plsql\nativelib' scope=both
2 /
System altered
SQL> show parameter plsql
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
plsql_ccflags string
plsql_code_type string NATIVE
plsql_compiler_flags string NATIVE, NON_DEBUG
plsql_debug boolean FALSE
plsql_native_library_dir string D:\oracle\product\10.2.0\db_2\plsql\nativelib
plsql_native_library_subdir_count integer 0
plsql_optimize_level integer 2
plsql_v2_compatibility boolean FALSE
plsql_warnings string DISABLE:ALL
--设置plsql_native_library_subdir_count参数，在nativelib文件下创建5个文件夹d0，d1,d2,d3,d4
SQL> alter system set plsql_native_library_subdir_count=5 scope=both;
System altered
SQL> show parameter plsql
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
plsql_ccflags string
plsql_code_type string NATIVE
plsql_compiler_flags string NATIVE, NON_DEBUG
plsql_debug boolean FALSE
plsql_native_library_dir string D:\oracle\product\10.2.0\db_2\plsql\nativelib
plsql_native_library_subdir_count integer 5
plsql_optimize_level integer 2
plsql_v2_compatibility boolean FALSE
plsql_warnings string DISABLE:ALL
--这时再将过程编译为本地编译，结果还是有编译错误
SQL> alter procedure p_xxxxxx compile plsql_code_type=native;
Warning: Procedure altered with compilation errors
SQL> show error
Errors for PROCEDURE ZZQ2.P_UPDATE_GRAPHCODE:
LINE/COL ERROR
-------- -----------------------------------------------------------------------------------------------------------------------------------------------------
0/0 PLS-00923: 本机码编译失败: Visual Studio not found::Could not open registry key HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\VISUALSTUDIO\7.1\SETUP:No error
查了好久还是不知道具体原因，说是需要安装Pro*C/C++环境，但是这个查看已经有了，装oracle的时候已经给装上了。
oracle11.2
本地编译不需向10g那样设置一堆参数，直接执行如下语句就可以将其编译为本地编译方式
alter procedure p_xxxx compile plsql_code_type=native;
plsql_native_library_dir和plsql_native_library_subdir_count参数到11.2g已经没有了。