oracle: 安装sqlplus help帮助命令

采用system用户登录执行脚本方式

1、用system用户登录，必须的，help表属于system的schema, 而且不要以sysdba身份登录

2、执行脚本内容如下

[oracle@centos oracle]$ sqlplus system/lzx123
SQL*Plus: Release 11.2.0.1.0 Production on Tue Sep 20 12:04:44 2011
Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> @?/sqlplus/admin/help/helpbld.sql
Enter value for 1: /oracle/11g/sqlplus/admin/help
Enter value for 2: /oracle/11g/sqlplus/admin/help/helpus.sql

value1是helpus.sql的脚本路径，value2是脚本

3、以上即可完成创建，若遇到system表空间问题：

若出现如下问题

SQL> @/oracle/11g/sqlplus/admin/help/helpbld.sql
Enter value for 1: /oracle/11g/sqlplus/admin/help
Enter value for 2: /oracle/11g/sqlplus/admin/help/helpus.sql

PL/SQL procedure successfully completed.

CREATE TABLE HELP
*
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1 
ORA-01654: unable to extend index SYS.I_COL2 by 128 in tablespace SYSTEM 

说明system表空间不是自动扩展的，需要修改一下，过程如下：

SQL> select tablespace_name,file_name,autoextensible from dba_data_files;
 
TABLESPACE_NAME                FILE_NAME                                AUTOEXTENSIBLE
------------------------------ ---------------------------------------  --------------
SYSTEM                         /oracle/mercury/system01.dbf             NO
SYSAUX                         /oracle/mercury/sysaux01.dbf             NO
UNDOTBS1                       /oracle/mercury/undotbs01.dbf            YES
USERS                          /oracle/mercury/users01.dbf              YES
 
SQL> alter database datafile 1 autoextend on;

 
Database altered
 
SQL> 

然后再重复2就可以了