关于ORACLE TDE密钥文件

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如果一个Oracle上有多个实例，请问一下需要几个wallet密钥文件呢，是一个，还是多个呢，如果是多个，又是在哪里怎么配置呢。ML牛人啊，急盼你的指导啊

Maclean Liu(刘相兵

Multiple databases on the same host
If there are multiple Oracle Databases installed on the same server, they must access their own individual TDE wallet. Sharing the same wallet between independent instances is not supported and can potentially lead to the loss of encrypted data.
If the databases share the same ORACLE_HOME, they also share the same sqlnet.ora file in $TNS_ADMIN. In order to access their individual wallet, the DIRECTORY entry for the ENCRYPTION_WALLET_LOCATION needs to point each database to its own wallet location:
DIRECTORY = /etc/ORACLE/WALLETS/$ORACLE_UNQNAME
The names of the subdirectories under /etc/ORACLE/WALLETS/ reflect the ORACLE_UNQNAME names of the individual databases.
If the databases do not share the same ORACLE_HOME, they will also have their individual sqlnet.ora files that have to point to the individual subdirectories.








If there are multiple Oracle Databases installed on the same server, they must access their own individual TDE wallet.


每个ORACLE DB需要使用独立的 TDE WALLET


http://www.oracle.com/us/products/database/twp-transparent-data-encryption-bes-130696.pdf