一、问题原因
      ORA-12432错误，Oracle官方解释的原因如下：
      The issue happens because the OLS metadata is incomplete as a result of a shutdown abort executed while the script catnools.sql (or catols.sql)  was running.



二、解决办法
        Oracle官方给出的解决步骤介绍如下：
--To solve this situation the LBAC option has to be disabled:
Step 1
cd $ORACLE_HOME/rdbms/lib
make -f ins_rdbms.mk lbac_off ioracle

-- Author  : Robinson Cheng
-- Blog    : http://www.linuxidc.com
-- DB Forum : http://www.linuxidc.com

Step 2
$ sqlplus "/ as sysdba"

SQL> startup migrate

SQL> @?/rdbms/admin/catnools.sql

SQL> shutdown immediate

SQL> startup