The Oracle relational database system has obtained the widespread application by its remarkable performance, but guaranteed that the database security is the data bank administration work important content. This article in summarizes in the Oracle database safety control work foundation, to the Oracle database system cryptographic document's foundation, the use and the maintenance has made the detailed introduction, for everybody reference.
Key word: Oracle database cryptographic document
In Oracle database system, user, if must (INTERNAL/SYSDBA/SYSOPER) register the Oracle database by the privilege user status to be possible to have two identification authentication method: Namely the use and the operating system integration's identification authentication or uses the Oracle database the cryptographic document to carry on the identification authentication. Therefore, manages the good cryptographic document, registers the Oracle database system regarding the control authorization user from the far-end or this aircraft, carries out the data bank administration work, has the vital significance.
Oracle database's cryptographic document depositing has the super user INTERNAL/SYS password and a other privilege user's user/password, it deposits generally in ORACLE_HOME \ under the DATABASE table of contents.
First, cryptographic document foundation
In uses Oracle Instance Manager founds a database example time, in ORACLE_HOME \ under the DATABASE table of contents also automatically founded one with it correspondence cryptographic document, document named PWDSID.ORA, SID represents the corresponding Oracle database system identifier. This cryptographic document is carries on the initial data bank administration work the base towering after this, the manager may also according to the need, use tool ORAPWD.EXE to found the cryptographic document manually, the forms of field orders is as follows:
C: \ >ORAPWDFILE=< FILENAME >PASSWORD =< PASSWORD > ENTRIES=< MAX_USERS >
Each command parameter's meaning is:
FILENAME: Password filename;
PASSWORD: Establishes the INTERNAL/SYS account number the password;
MAX_USERS: In the cryptographic document may deposit the biggest number of users, corresponds in the permission registers the database by the SYSDBA/SYSOPER jurisdiction the biggest number of users. Because in the later maintenance, if the number of users has surpassed this limit, then needs to reconstruct the cryptographic document, therefore this parameter may according to need to establish big somewhat.
After having the cryptographic document, needs to establish initialization parameter REMOTE_LOGIN_PASSWORDFILE to control the cryptographic document the running condition.
Second, establishment initialization parameter REMOTE_LOGIN_PASSWORDFILE
In the Oracle database example's initialization parameter document, this parameter is controlling the cryptographic document use and the condition. It may have following several options:
NONE: Instructed that the Oracle system does not use the cryptographic document, privilege user's registering carries on the identification authentication through the operating system;
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