oracle升級后數(shù)據(jù)文件路徑變?yōu)榇髮?/h1>

進行數(shù)據(jù)文件維護時，發(fā)現(xiàn)數(shù)據(jù)文件的名稱存在大小寫差異。

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在某個時間點以后創(chuàng)建的數(shù)據(jù)文件，名稱中的db_name和“datafile”都是大寫，而以前都是小寫。

oracle升級后數(shù)據(jù)文件路徑變?yōu)榇髮?></p><p>查詢官方文檔 Directory for Datafiles and Controlfiles Become Uppercase in 18.3 DBCA. (Doc ID 2542927.1)</p><p>在18.3.0.0版本開始，內部設計上的變化導致了此問題。</p><p>同時還指向一個internal的文檔，無權限瀏覽：</p><p>BUG:29294715  - 18.3 DBCA UPPERCASING DB_UNIQUE_NAME FOR DIRECTORY OF DATA FILES AND CONTROL FILES.</p><p>進一步分析發(fā)現(xiàn)，我們將數(shù)據(jù)庫升級到19c，并將compatible由11.2.0.4改為19.3.0.0后，數(shù)據(jù)文件路徑就改為大寫了。</p><p>使用文件系統(tǒng)作為存儲介質的數(shù)據(jù)庫未出現(xiàn)此問題。</p><p>Directory for Datafiles and Controlfiles Become Uppercase in 18.3 DBCA. (Doc ID 2542927.1)</p><h3>APPLIES TO:</h3><p>Oracle Database Configuration Assistant - Version 18.3.0.0.0 and later<br/>Information in this document applies to any platform. </p><h3>SYMPTOMS</h3><p>When you specified lowercase "DB_UNIQUE_NAME" variable(for example:orcl) in DB:18.3 DBCA to create DB instance<br/>after the instance be created, you will find the directory of data files and control files contains uppercase DB_UNIQUE_NAME which you specified.<br/>-----------------------------<br/>/u01/app/oracle/oradata/ORCL<br/>-----------------------------<br/>This result is different from the previous version(DB:12.2/DB:12.1).<br/></p><p>If we save the DBCA scripts which can be generated by DBCA, we could see that even if you specified lowercase DB_UNIQUE_NAME in DBCA, <br/>the script is to create uppercase DB_UNIQUE_NAME in the directory path of data files and control files.</p><div>$ pwd<br/>../..oracle/admin/orcl/scripts<br/> scripts]$ grep "ORCL" *.sql<br/>cloneDBCreation.sql:LOGFILE GROUP 1<br/>('...oradata/ORCL/redo01.log') SIZE 200M,<br/>cloneDBCreation.sql:GROUP 2 ('..oradata/ORCL/redo02.log') SIZE<br/>200M,<br/>cloneDBCreation.sql:GROUP 3 ('../oradata/ORCL/redo03.log') SIZE<br/>200M RESETLOGS;<br/>cloneDBCreation.sql:LOGFILE GROUP 1<br/>('..oradata/ORCL/redo01.log') SIZE 200M,<br/>cloneDBCreation.sql:GROUP 2 ('..oradata/ORCL/redo02.log') SIZE<br/>200M,<br/>...<br/>plug_PDBSeed.sql:host mkdir -p .../oradata/ORCL/pdbseed;<br/>plug_PDBSeed.sql:host mkdir -p .../oracle/oradata/ORCL/pdbseed;<br/>...<br/>rmanRestoreDatafiles.sql:set newname for datafile 4 to  <br/>'..oradata/ORCL/undotbs01.dbf' ;<br/>rmanRestoreDatafiles.sql:set newname for datafile 7 to  <br/>'...oradata/ORCL/users01.dbf' ;</div><h3>CHANGES</h3><p>Using DB:18.3 DBCA to create database instance and specified lowercase "DB_UNIQUE_NAME" variable.</p><h3>CAUSE</h3><p>It is a limitation according to current design.</p><h3>SOLUTION</h3><p>The following method can avoid this issue.<br/><br/>STEP 1: Generate the DBCA Scripts.<br/>STEP 2: Change the uppercase DB_UNIQUE_NAME to lowercase DB_UNIQUE_NAME manually.<br/>STEP 3: Execute these scripts to create DB instance.</p> <p> 網(wǎng)站題目：<a href=oracle升級后數(shù)據(jù)文件路徑變?yōu)榇髮?/a>
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