管理部分
如果沒有啓用database force logging,則備庫對/*+ append */操作，nologging操作，會報壞塊；
建議表空間force logging或者database force logging;
測試：
select force_logging, tablespace_name from dba_tablespaces where tablespace_name in (select default_tablespace from dba_users where username = 'SCOTT'); ------------------------------ FORCE_LOGGING TABLESPACE_NAME NO TEST create table t1 noglogging as select * from user_tables;
備庫查詢：
select * from t1; ORA-01578: ORACLE data block corrupted (file # 8, block # 483) ORA-01110: data file 8: '/data/db/test1.dbf' ORA-26040: Data block was loaded using the NOLOGGING option
但以下是可以的
select * from t1 where rownum<1
主庫收集下表信息：
begin dbms_stats.gather_table_stats(ownname=>'SCOTT',tabname=>'T1',cascade=>TRUE); end
select table_name,num_rows,logging from user_tables where table_name='T1';
統計信息也是同步過來的；也就是表結構啥都是正常的，就是這個表的數據同步不了；
解決辦法：
主庫把表刪了重建，或者把相應的數據文件做恢復；
--相關sql
alter database force logging;select force_logging from dba_tablespaces;select force_logging from v$database;alter tablespace test force logging;select logging,table_name,tablespace_name from user_tables where table_name ='TEST';alter tablespace test no force logging;select tablespace_name,logging,force_logging from dba_tablespaces; |