--1. 構造測試數據

SQL>?alter?database?datafile?'/oracle/app/oracle/oradata/test/users01.dbf'?resize?100m; SQL>?create?table?ducw.test_dul?tablespace?users2??as3??select?*?from?dba_objects; SQL>?select?count(1)?from?ducw.test_dul; SQL>?exit;

--2. 構造DUL使用的控制文件

在control.dul中必須包含SYSTEM表空間的文件信息，以及想UNLOAD的表的表空間文件信息。

SQL>?select?ts#?||?'?'||?rfile#?||?'?'||?name?||?'?block_size?'||?block_size2??from?v$datafile3??/ TS#||''||RFILE#||''||NAME||'BLOCK_SIZE'||BLOCK_SIZE -------------------------------------------------------------------------------- 0?1?/oracle/app/oracle/oradata/test/system01.dbf?block_size?8192 1?2?/oracle/app/oracle/oradata/test/sysaux01.dbf?block_size?8192 2?3?/oracle/app/oracle/oradata/test/undotbs01.dbf?block_size?8192 4?4?/oracle/app/oracle/oradata/test/users01.dbf?block_size?8192 4?5?/oracle/app/oracle/oradata/test/users02.dbf?block_size?8192

--2.1 DUL控制文件

(python3venv)?[oracle@sqlaudit?~]$?cat?control.dul? 0?1?/oracle/app/oracle/oradata/test/system01.dbf?block_size?8192 1?2?/oracle/app/oracle/oradata/test/sysaux01.dbf?block_size?8192 2?3?/oracle/app/oracle/oradata/test/undotbs01.dbf?block_size?8192 4?4?/oracle/app/oracle/oradata/test/users01.dbf?block_size?8192 4?5?/oracle/app/oracle/oradata/test/users02.dbf?block_size?8192

--2.2 DUL參數文件

(python3venv)?[oracle@sqlaudit?~]$?cat?init.dul #Platform?specific?parameter?? OSD_BIG_ENDIAN_FLAG=FALSE OSD_DBA_FILE_BITS=10 OSD_C_STRUCT_ALIGNMENT=32 OSD_FILE_LEADER_SIZE=1 OSD_WORD_SIZE=32 #?Size?of?dul?dictionary?caches.?If?one?of?these?is?too?low?startup?will?fail. DC_COLUMNS=200000 DC_TABLES=100000 DC_OBJECTS=100000 DC_USERS=100 DC_SEGMENTS=100000 #?Location?and?filename?ofthe?control?file CONTROL_FILE=/home/oracle/control.dul #?Database?blocksize DB_BLOCK_SIZE=8192 #?Using?Import?to?restore?the?data?retrieved? EXPORT_MODE=TRUE #?Using?SQL*Loader?to?restore?the?data?retrieved? #EXPORT_MODE=FALSE #?Compatible?parameter COMPATIBLE=10 FILE_SIZE_IN_MB=1000 BUFFER=200000000

--3. 運行DUL

rm?*.ctl rm?*.dat rm?*.log rm?*.ddl rm?*.out

--3.1 在DUL運行環境下執行BOOTSTRAP命令，生成字典信息，為UNLOAD做必要的準備。

(python3venv)?[oracle@sqlaudit?~]$?./dul? DUL>?bootstrap;

--3.2 在DUL運行環境下執行UNLOAD過程：

UNLOAD TABLE owner.table ;?

This will unload the one table definition and the table's data.?

UNLOAD USER user name ;?

This unloads all tables and data for the specified user.?

UNLOAD DATABASE ;?

This unloads all of the database tables available. (except the user SYS).?

DUL>unload?table?ducw.test_dul;

轉載于:https://blog.51cto.com/recyclebin/2067415

總結

以上是生活随笔為你收集整理的DUL 恢复简单表测试的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。