首页 > 数据库 > Oracle > Oracle 誤刪 DUAL 的解決方法
Solution
1 ) Error 980 during db open is causing the shut down of the database
2 ) Need to create the Dual Table to resolve the issue (which was not possible in the mount stage)
Workaround
=========
3 ) Set the following parameter in the init.ora
replication_dependency_tracking = FALSE
4 ) Startup the database
5 ) Create the Dual Table and Dual Public Synonym
CREATE TABLE "SYS"."DUAL"
( "DUMMY" VARCHAR2(1)
) PCTFREE 10 PCTUSED 4;
Insert Into Dual Values ('X');
Commit;
Grant Select On Dual To Public;
6 ) Remove the above parameter and restart the database
Note :- Dual table should not be dropped in any case , as it can lead to serious problems
Errors
[@more@]
SYS@HUIYI>drop table dual; Table dropped. SYS@HUIYI>startup force; ORACLE instance started. Total System Global Area 143727516 bytes Fixed Size 453532 bytes Variable Size 109051904 bytes Database Buffers 33554432 bytes Redo Buffers 667648 bytes Database mounted. ORA-01092: ORACLE instance terminated. Disconnection forced @>startup mount; ORACLE instance started. Total System Global Area 143727516 bytes Fixed Size 453532 bytes Variable Size 109051904 bytes Database Buffers 33554432 bytes Redo Buffers 667648 bytes Database mounted. @>create pfile from spfile; File created. -- 修改參數文件加上replication_dependency_tracking = FALSE …… -- 啟動數据庫 SYS@HUIYI>shutdown immediate; ORA-01109: database not open Database dismounted. ORACLE instance shut down. SYS@HUIYI>startup pfile=G:A9Idatabaseinithuiyi.ora; ORACLE instance started. Total System Global Area 143727516 bytes Fixed Size 453532 bytes Variable Size 109051904 bytes Database Buffers 33554432 bytes Redo Buffers 667648 bytes Database mounted. Database opened. -- 創建dual 表 SYS@HUIYI>create table sys.dual 2 ( 3 dummy varchar2(1) 4 ) 5 pctfree 10 pctused 4; Table created. SYS@HUIYI>insert into dual values('X'); 1 row created. SYS@HUIYI>commit; Commit complete. SYS@HUIYI>grant select on dual to public; Grant succeeded. SYS@HUIYI>startup force; ORACLE instance started. Total System Global Area 143727516 bytes Fixed Size 453532 bytes Variable Size 109051904 bytes Database Buffers 33554432 bytes Redo Buffers 667648 bytes Database mounted. Database opened. SYS@HUIYI>select sysdate from dual; SYSDATE ------------------ 07-Mar-07 10:26:15
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