關於aud$物件相關處理

ewelamb發表於2014-01-06
物件

連結：

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在日常的資料庫維護中，經常出現因為資料庫登入審計的功能啟動,導致system表空間被用滿.從而出現異常,一般建議把aud$相關物件遷移到其他表空間,從而避免system被用完的風險.
人工move aud$相關物件

alter table AUDIT$ move tablespace users;
alter table AUDIT_ACTIONS move tablespace users;
alter table AUD$ move tablespace users;
alter table AUD$ move lob(SQLBIND) store as SYS_IL0000000384C00041$$ (tablespace users);
alter table AUD$ move lob(SQLTEXT) store as SYS_IL0000000384C00041$$ (tablespace users);
alter index I_AUDIT rebuild online tablespace users;
alter index I_AUDIT_ACTIONS rebuild online tablespace users;
 
--可能修改值(index和lob index)
SQL> select COLUMN_NAME,index_name from dba_lobs where owner='SYS' and table_name='AUD$';
 
COLUMN_NAME                              INDEX_NAME
---------------------------------------- ------------------------------
SQLBIND                                  SYS_IL0000000384C00040$$
SQLTEXT                                  SYS_IL0000000384C00041$$
 
SQL> SELECT INDEX_NAME FROM DBA_INDEXES WHERE TABLE_NAME='AUD$';
 
INDEX_NAME
------------------------------
SYS_IL0000000384C00040$$
SYS_IL0000000384C00041$$
 
SQL> SELECT INDEX_NAME FROM DBA_INDEXES WHERE TABLE_NAME='AUDIT$';
 
INDEX_NAME
------------------------------
I_AUDIT
 
SQL>  SELECT INDEX_NAME FROM DBA_INDEXES WHERE TABLE_NAME='AUDIT_ACTIONS';
 
INDEX_NAME
------------------------------
I_AUDIT_ACTIONS

DBMS_AUDIT_MGMT實現遷移

conn / as sysdba
 
BEGIN
DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_LOCATION(audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_DB_STD,
audit_trail_location_value => 'USERS');
END;
/

驗證DBMS_AUDIT_MGMT效果

SQL> select segment_name,tablespace_name from dba_segments where
  2  segment_name in('AUD$','SYS_IL0000000384C00040$$','SYS_IL0000000384C00041$$',
  3  'AUDIT$','I_AUDIT','AUDIT_ACTIONS','I_AUDIT_ACTIONS');
 
SEGMENT_NAME                                                                      TABLESPACE_NAME
--------------------------------------------------------------------------------- ------------------------------
AUDIT_ACTIONS                                                                     SYSTEM
AUDIT$                                                                            SYSTEM
AUD$                                                                              SYSTEM
SYS_IL0000000384C00041$$                                                          SYSTEM
SYS_IL0000000384C00040$$                                                          SYSTEM
I_AUDIT_ACTIONS                                                                   SYSTEM
I_AUDIT                                                                           SYSTEM
 
SQL> BEGIN
  2  DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_LOCATION(audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_DB_STD,
  3  audit_trail_location_value => 'USERS');
  4  END;
  5  /
 
PL/SQL procedure successfully completed.
 
SQL> select segment_name,tablespace_name from dba_segments where
  2   segment_name in('AUD$','SYS_IL0000000384C00040$$','SYS_IL0000000384C00041$$',
  3   'AUDIT$','I_AUDIT','AUDIT_ACTIONS','I_AUDIT_ACTIONS');
 
SEGMENT_NAME                                                                      TABLESPACE_NAME
--------------------------------------------------------------------------------- ------------------------------
AUDIT_ACTIONS                                                                     SYSTEM
AUDIT$                                                                            SYSTEM
AUD$                                                                              USERS
SYS_IL0000000384C00041$$                                                          USERS
SYS_IL0000000384C00040$$                                                          USERS
I_AUDIT_ACTIONS                                                                   SYSTEM
I_AUDIT                                                                           SYSTEM

透過試驗證明DBMS_AUDIT_MGMT就是遷移了AUD$表中相關物件,對於和審計相關的其他幾個物件並未遷移到其他表空間

aud$相關說明
1.DBMS_AUDIT_MGMT版本支援情況

It is still not supported (but it works) to use it on 10.2.0.4 and 11.1.0.7 for non-Audit Vault Environment.
 
Using RDBMS with Audit Vault, it is supported  for 10.2.0.4.0 and 11.1.0.7.0
as the DBMS_AUDIT_MGMT Package is provided to be used with an Audit Vault Environment.

2.該包可以實現線上遷移，特別是在高業務的系統中,可以實現線上遷移,而人工的move操作不能實現線上處理
3.對於AUD$物件，如果登入審計資料不是非常重要,可以透過truncate來解決一時的問題，在業務高的系統，可能truncate不能馬上操作成功，可以嘗試使用11gr2的新特性alter session set ddl_lock_timeout = 10;來實現自動ddl嘗試
4.如果確定不需要登入審計功能，可以透過設定audit_trail=none來關閉(需要重啟例項)

來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/7191998/viewspace-1067432/，如需轉載，請註明出處，否則將追究法律責任。

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