Get Host Name in Oracle & SYS_CONTEXT('USERENV', xxx)
2011-08-09 15:53
936 查看
Oracle提供了好些方法来获取连接数据库的客户端机器名和数据库所在的机器名,最常见的是从视图v$instance和v$session中获得,如下....
V$INSTANCE
v$instance中的host_name显示的是数据库服务器所在的机器名...
V$SESSION
v$session中的MACHINE (TERMINAL)显示的客户端session所在的机器名。
注意到MACHINE会包含域名信息。
除了这两种方式,还可以通过调用UTL_INADDR包中提供的一些function来得到数据库服务器端的主机名
UTL_INADDR
- GET_HOST_NAME: 机器名
- GET_HOST_ADDRESS:IP地址
上面提到的方法返回的信息都不是很全面,得到的要么只是客户端session所在的机器名,要么是数据库服务器的机器名。其实这些信息都可以通过SYS_CONTEXT函数得到。
SYS_CONTEXT
SYS_CONTEXT的USERENV命名空间中包含了当前SESSION相关的很多信息,其中就包括了Host Name, 相关的list 如下...
Predefined Parameters of Namespace USERENV
V$INSTANCE
v$instance中的host_name显示的是数据库服务器所在的机器名...
SQL> select host_name from v$instance; HOST_NAME ---------------------------------------------------------------- SZV-DEV-LO-D02 SQL>
V$SESSION
v$session中的MACHINE (TERMINAL)显示的客户端session所在的机器名。
注意到MACHINE会包含域名信息。
SQL> select terminal, machine from v$session where sid= sys_context('userenv', 'sid'); TERMINAL MACHINE ---------------- ------------------------------ SZ1-DEV-DXP-047 ANALYTICS\SZ1-DEV-DXP-047
除了这两种方式,还可以通过调用UTL_INADDR包中提供的一些function来得到数据库服务器端的主机名
UTL_INADDR
- GET_HOST_NAME: 机器名
- GET_HOST_ADDRESS:IP地址
SQL> select utl_inaddr.get_host_address, utl_inaddr.get_host_name from dual; GET_HOST_ADDRESS GET_HOST_NAME -------------------- -------------------- 10.133.131.154 SZV-DEV-LO-D02
上面提到的方法返回的信息都不是很全面,得到的要么只是客户端session所在的机器名,要么是数据库服务器的机器名。其实这些信息都可以通过SYS_CONTEXT函数得到。
SYS_CONTEXT
SYS_CONTEXT的USERENV命名空间中包含了当前SESSION相关的很多信息,其中就包括了Host Name, 相关的list 如下...
Predefined Parameters of Namespace USERENV
Parameter | Return Value |
---|---|
ACTION | Identifies the position in the module (application name) and is set through the DBMS_APPLICATION_INFOpackage or OCI. |
AUDITED_CURSORID | Returns the cursor ID of the SQL that triggered the audit. This parameter is not valid in a fine-grained auditing environment. If you specify it in such an environment, Oracle Database always returns NULL. |
AUTHENTICATED_IDENTITY | Returns the identity used in authentication. In the list that follows, the type of user is followed by the value returned: Kerberos-authenticated enterprise user: kerberos principal name Kerberos-authenticated external user : kerberos principal name; same as the schema name SSL-authenticated enterprise user: the DN in the user's PKI certificate SSL-authenticated external user: the DN in the user's PKI certificate Password-authenticated enterprise user: nickname; same as the login name Password-authenticated database user: the database username; same as the schema name OS-authenticated external user: the external operating system user name Radius/DCE-authenticated external user: the schema name Proxy with DN : Oracle Internet Directory DN of the client Proxy with certificate: certificate DN of the client Proxy with username: database user name if client is a local database user; nickname if client is an enterprise user. SYSDBA/SYSOPER using Password File: login name SYSDBA/SYSOPER using OS authentication: operating system user name |
AUTHENTICATION_DATA | Data being used to authenticate the login user. For X.503 certificate authenticated sessions, this field returns the context of the certificate in HEX2 format. Note: You can change the return value of the AUTHENTICATION_DATAattribute using the lengthparameter of the syntax. Values of up to 4000 are accepted. This is the only attribute of USERENVfor which Oracle Database implements such a change. |
AUTHENTICATION_METHOD | Returns the method of authentication. In the list that follows, the type of user is followed by the method returned: Password-authenticated enterprise user, local database user, or SYSDBA/SYSOPER using Password File; proxy with username using password: PASSWORD Kerberos-authenticated enterprise or external user: KERBEROS SSL-authenticated enterprise or external user: SSL Radius-authenticated external user: RADIUS OS-authenticated external user or SYSDBA/SYSOPER: OS DCE-authenticated external user: DCE Proxy with certificate, DN, or username without using password: NONE You can use IDENTIFICATION_TYPEto distinguish between external and enterprise users when the authentication method is Password, Kerberos, or SSL. |
BG_JOB_ID | Job ID of the current session if it was established by an Oracle Database background process. Null if the session was not established by a background process. |
CLIENT_IDENTIFIER | Returns an identifier that is set by the application through the DBMS_SESSION.SET_IDENTIFIERprocedure, the OCI attribute OCI_ATTR_CLIENT_IDENTIFIER, or the Java class Oracle.jdbc.OracleConnection.setClientIdentifier. This attribute is used by various database components to identify lightweight application users who authenticate as the same database user. |
CLIENT_INFO | Returns up to 64 bytes of user session information that can be stored by an application using the DBMS_APPLICATION_INFOpackage. |
CURRENT_BIND | The bind variables for fine-grained auditing. |
CURRENT_SCHEMA | Name of the default schema being used in the current schema. This value can be changed during the session with an ALTER SESSION SET CURRENT_SCHEMAstatement. |
CURRENT_SCHEMAID | Identifier of the default schema being used in the current session. |
CURRENT_SQL CURRENT_SQL n | CURRENT_SQLreturns the first 4K bytes of the current SQL that triggered the fine-grained auditing event. The CURRENT_SQL nattributes return subsequent 4K-byte increments, where ncan be an integer from 1 to 7, inclusive. CURRENT_SQL1returns bytes 4K to 8K; CURRENT_SQL2returns bytes 8K to 12K, and so forth. You can specify these attributes only inside the event handler for the fine-grained auditing feature. |
CURRENT_SQL_LENGTH | The length of the current SQL statement that triggers fine-grained audit or row-level security (RLS) policy functions or event handlers. Valid only inside the function or event handler. |
DB_DOMAIN | Domain of the database as specified in the DB_DOMAINinitialization parameter. |
DB_NAME | Name of the database as specified in the DB_NAMEinitialization parameter. |
DB_UNIQUE_NAME | Name of the database as specified in the DB_UNIQUE_NAMEinitialization parameter. |
ENTRYID | The current audit entry number. The audit entryid sequence is shared between fine-grained audit records and regular audit records. You cannot use this attribute in distributed SQL statements. The correct auditing entry identifier can be seen only through an audit handler for standard or fine-grained audit. |
ENTERPRISE_IDENTITY | Returns the user's enterprise-wide identity: For enterprise users: the Oracle Internet Directory DN. For external users: the external identity (Kerberos principal name, Radius and DCE schema names, OS user name, Certificate DN). For local users and SYSDBA/SYSOPER logins: NULL. The value of the attribute differs by proxy method: For a proxy with DN: the Oracle Internet Directory DN of the client For a proxy with certificate: the certificate DN of the client for external users; the Oracle Internet Directory DN for global users For a proxy with username: the Oracle Internet Directory DN if the client is an enterprise users; NULLif the client is a local database user. |
FG_JOB_ID | Job ID of the current session if it was established by a client foreground process. Null if the session was not established by a foreground process. |
GLOBAL_CONTEXT_MEMORY | Returns the number being used in the System Global Area by the globally accessed context. |
GLOBAL_UID | Returns the global user ID from Oracle Internet Directory for Enterprise User Security (EUS) logins; returns null for all other logins. |
HOST | Name of the host machine from which the client has connected. |
IDENTIFICATION_TYPE | Returns the way the user's schema was created in the database. Specifically, it reflects the IDENTIFIEDclause in the CREATE/ ALTER USERsyntax. In the list that follows, the syntax used during schema creation is followed by the identification type returned: IDENTIFIED BY password: LOCAL IDENTIFIED EXTERNALLY: EXTERNAL IDENTIFIED GLOBALLY: GLOBAL SHARED IDENTIFIED GLOBALLY AS DN: GLOBAL PRIVATE |
INSTANCE | The instance identification number of the current instance. |
INSTANCE_NAME | The name of the instance. |
IP_ADDRESS | IP address of the machine from which the client is connected. |
ISDBA | Returns TRUEif the user has been authenticated as having DBA privileges either through the operating system or through a password file. |
LANG | The ISO abbreviation for the language name, a shorter form than the existing 'LANGUAGE' parameter. |
LANGUAGE | The language and territory currently used by your session, along with the database character set, in this form: language_territory.characterset |
MODULE | The application name (module) set through the DBMS_APPLICATION_INFOpackage or OCI. |
NETWORK_PROTOCOL | Network protocol being used for communication, as specified in the 'PROTOCOL= protocol' portion of the connect string. |
NLS_CALENDAR | The current calendar of the current session. |
NLS_CURRENCY | The currency of the current session. |
NLS_DATE_FORMAT | The date format for the session. |
NLS_DATE_LANGUAGE | The language used for expressing dates. |
NLS_SORT | BINARYor the linguistic sort basis. |
NLS_TERRITORY | The territory of the current session. |
OS_USER | Operating system user name of the client process that initiated the database session. |
POLICY_INVOKER | The invoker of row-level security (RLS) policy functions. |
PROXY_ENTERPRISE_IDENTITY | Returns the Oracle Internet Directory DN when the proxy user is an enterprise user. |
PROXY_GLOBAL_UID | Returns the global user ID from Oracle Internet Directory for Enterprise User Security (EUS) proxy users; returns NULLfor all other proxy users. |
PROXY_USER | Name of the database user who opened the current session on behalf of SESSION_USER. |
PROXY_USERID | Identifier of the database user who opened the current session on behalf of SESSION_USER. |
SERVER_HOST | The host name of the machine on which the instance is running. |
SERVICE_NAME | The name of the service to which a given session is connected. |
SESSION_USER | For enterprises users, returns the schema. For other users, returns the database user name by which the current user is authenticated. This value remains the same throughout the duration of the session. |
SESSION_USERID | Identifier of the database user name by which the current user is authenticated. |
SESSIONID | The auditing session identifier. You cannot use this attribute in distributed SQL statements. |
SID | The session number (different from the session ID). |
STATEMENTID | The auditing statement identifier. STATEMENTIDrepresents the number of SQL statements audited in a given session. You cannot use this attribute in distributed SQL statements. The correct auditing statement identifier can be seen only through an audit handler for standard or fine-grained audit. |
TERMINAL | The operating system identifier for the client of the current session. In distributed SQL statements, this attribute returns the identifier for your local session. In a distributed environment, this is supported only for remote SELECTstatements, not for remote INSERT, UPDATE, or DELETEoperations. (The return length of this parameter may vary by operating system.) |
select sys_context('userenv', 'host') client_host, sys_context('userenv', 'terminal') termial, sys_context('userenv', 'server_host') server_host, sys_context('userenv', 'ip_address') client_ip from dual; CLIENT_HOST TERMINAL SERVER_HOST CLIENT_IP ------------------------------ -------------------- -------------------- ----------------- ANALYTICS\SZ1-DEV-DXP-047 SZ1-DEV-DXP-047 szv-dev-lo-d02 10.5.130.100
相关文章推荐
- Error creating bean with name 'dwrSysuserDao' defined in ServletContext resource
- SYS_CONTEXT('USERENV', 'HOST') Return NULL & Oracle Fixed Tables
- Error creating bean with name 'UserManger' defined in class path resource [user/applicationContext.x
- 实时错误:'453':找不到DLL入口点getusernameA in advapi32.dll
- Unity 错误(1)——The name `xxx' does not exist in the current context
- Websphere报错"Cannot get canonical host name for server" 解决方法
- docker报错-->Error response from daemon: Get xxx: unauthorized: incorrect username or password
- sys_context查询session相关信息(sid,sessionid,current_user,ip_address、host等)
- reason: 'Could not load NIB in bundle: "XXXXXXX" with name 'xxCell'
- How to put username &password in MongoDB(Security&Authentication)?(配置用户认证在MongoDB)
- Could not resolve view with name 'sys/menu/user' in servlet with name 'dispatcher'
- Example of Get_File_Name Function in Oracle Forms
- Using Timer to get history values from EDNA database, an error is prompted in the page : "Sys.WebForms.PageRequestManagerTimeout
- Could not load NIB in bundle: 'NSBundle <xxx> (loaded)' with name ''xxx''
- Error creating bean with name 'sessionFactory' defined in ServletContext resource
- for bean with name 'permisAddAction' defined in ServletContext resource
- 实时错误:'453':找不到DLL入口点getusernameA in advapi32.dll
- Modifying the VIP Address or VIP Hostname in Oracle RAC Node
- Silent install Oracle 10.2 in W2k8 - GetProcessImageFileNameW not in dynamic link library PSAPI.DLL
- javax.naming.NoInitialContextException: Need to specify class name in XXX解决