Oracle 19C 无法启用Auto Indexes特性
环境：
OS:Red Hat Enterprise Linux Server release 7.5 (Maipo)
DB:Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 – Production Version 19.3.0.0.0
说明：
近期查看Oracle 19C新特性，发现Auto Indexes特性特别实用，想看看效果;
1 查看auto_index特性未启用；
SQL>
select
*
from
dba_auto_index_config
;
2 在启用Automatic Indexing
时报如下错误，不支持该特性：
SQL>
alter session set container=cjcpdb;
SQL>
EXEC DBMS_AUTO_INDEX.CONFIGURE('AUTO_INDEX_MODE','IMPLEMENT');
BEGIN DBMS_AUTO_INDEX.CONFIGURE('AUTO_INDEX_MODE','IMPLEMENT'); END;
*
ERROR at line 1:
ORA-40216: feature not supported
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 79
ORA-06512: at "SYS.DBMS_AUTO_INDEX_INTERNAL", line 9180
ORA-06512: at "SYS.DBMS_AUTO_INDEX", line 283
ORA-06512: at line 1
问题原因：
只有在
EXADATA systems
系统下才支持
Auto Index
特性。
Auto indexing will be allowed only in EXADATA systems, if not it will raise ORA-40216: feature not supported when we try it turn it on in non exadata systems.
ORA-40216 When Using Auto Index Feature (Doc ID 2570076.1)
APPLIES TO:
Oracle Database – Enterprise Edition – Version 19.3.0.0.0 and later
Information in this document applies to any platform.
SYMPTOMS
When attempting to use auto index feature ,e.g. DBMS_AUTO_INDEX.CONFIGURE('AUTO_INDEX_MODE','IMPLEMENT');
it reports
ORA-40216: feature not supported
ORA-6512: at "SYS.DBMS_SYS_ERROR", line 79
ORA-6512: at "SYS.DBMS_AUTO_INDEX_INTERNAL", line 9180
ORA-6512: at "SYS.DBMS_AUTO_INDEX", line 283
ORA-6512: at line 1
CHANGES
CAUSE
This issue has been discussed in
Bug 30017206 : ADW : AUTO INDEX FEATURE NOT WORKING IN FUTURE PRODUCTION
Closed as 'Not a Bug.'
Development explains:
Auto indexing will be allowed only in EXADATA systems, if not it will raise ORA-40216: feature not supported when we try it turn it on in non exadata systems.
SOLUTION
Do not use AUTO INDEX FEATURE in non-exadata systems.
想学习
AUTO INDEX FEATURE
可以看下面的链接：
https://docs.oracle.com/en/database/oracle/oracle-database/19/admin/managing-indexes.html#GUID-D1285CD5-95C0-4E74-8F26-A02018EA7999
Database Administrator’s Guide
—
21 Managing Indexes
21.7 Managing Auto Indexes
You can use the automatic indexing feature to configure and use auto indexes in an Oracle database to improve database performance.
……
欢迎关注我的微信公众号"IT小Chen"，共同学习，共同成长！！！
