進(jìn)行數(shù)據(jù)文件維護(hù)時(shí),發(fā)現(xiàn)數(shù)據(jù)文件的名稱存在大小寫(xiě)差異。
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在某個(gè)時(shí)間點(diǎn)以后創(chuàng)建的數(shù)據(jù)文件,名稱中的db_name和“datafile”都是大寫(xiě),而以前都是小寫(xiě)。
查詢官方文檔 Directory for Datafiles and Controlfiles Become Uppercase in 18.3 DBCA. (Doc ID 2542927.1)
在18.3.0.0版本開(kāi)始,內(nèi)部設(shè)計(jì)上的變化導(dǎo)致了此問(wèn)題。
同時(shí)還指向一個(gè)internal的文檔,無(wú)權(quán)限瀏覽:
BUG:29294715 - 18.3 DBCA UPPERCASING DB_UNIQUE_NAME FOR DIRECTORY OF DATA FILES AND CONTROL FILES.
進(jìn)一步分析發(fā)現(xiàn),我們將數(shù)據(jù)庫(kù)升級(jí)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(xiě)了。
使用文件系統(tǒng)作為存儲(chǔ)介質(zhì)的數(shù)據(jù)庫(kù)未出現(xiàn)此問(wèn)題。
Directory for Datafiles and Controlfiles Become Uppercase in 18.3 DBCA. (Doc ID 2542927.1)
Oracle Database Configuration Assistant - Version 18.3.0.0.0 and later
Information in this document applies to any platform.
When you specified lowercase "DB_UNIQUE_NAME" variable(for example:orcl) in DB:18.3 DBCA to create DB instance
after the instance be created, you will find the directory of data files and control files contains uppercase DB_UNIQUE_NAME which you specified.
-----------------------------
/u01/app/oracle/oradata/ORCL
-----------------------------
This result is different from the previous version(DB:12.2/DB:12.1).
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,
the script is to create uppercase DB_UNIQUE_NAME in the directory path of data files and control files.
Using DB:18.3 DBCA to create database instance and specified lowercase "DB_UNIQUE_NAME" variable.
It is a limitation according to current design.
The following method can avoid this issue.
STEP 1: Generate the DBCA Scripts.
STEP 2: Change the uppercase DB_UNIQUE_NAME to lowercase DB_UNIQUE_NAME manually.
STEP 3: Execute these scripts to create DB instance.
網(wǎng)站題目:oracle升級(jí)后數(shù)據(jù)文件路徑變?yōu)榇髮?xiě)
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