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1 . set database to archivelog mode
Sql´úÂë
SQL> shutdown immediate;   
Database closed.   
Database dismounted.   
ORACLE instance shut down.   
  
SQL> startup mount;   
ORACLE instance started.   
  
Total System Global Area  251658240 bytes   
Fixed Size                  1248356 bytes   
Variable Size              83887004 bytes   
Database Buffers          159383552 bytes   
Redo Buffers                7139328 bytes   
Database mounted.   
  
SQL> alter database archivelog;   
Database altered.   
  
SQL> alter database open;   
Database altered.   
  
SQL> archive log list;   
Database log mode              Archive Mode   
Automatic archival             Enabled   
Archive destination            USE_DB_RECOVERY_FILE_DEST   
Oldest online log sequence     1319   
Next log sequence to archive   1321   
Current log sequence           13


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ORACLE PL/SQL ¶ÔÏó(object)ѧϰ±Ê¼Ç(Ò»)

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CREATE [OR REPLACE] TYPE [schema.] type_name
[AUTHID {CURRENT_USER|DEFINER}] AS OBJECT (
Attribute1 datatype,
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[method 1]
[method 2]);
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