December 2002
Intermediate to advanced
928 pages
85h 29m
English
Content preview from Oracle in a Nutshell
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Parameters
- namespace
Name of a namespace previously created using the CREATE CONTEXT statement. You can also specify the default namespace USERENV.
- attribute_name
Name of an attribute within the namespace, which is then returned by this function. Several predefined attributes are available for use with the default USERENV namespace and are listed in Table 8-3.
- length
Length that you want to allow for an attribute’s return value. This optional parameter is only available beginning with Oracle 8.1.6 and only for the AUTHENTICATION_DATA attribute; in addition, it cannot be more than 4000.0
Table 8-3. Predefined attributes in the USERENV namespace
|
Attribute name |
Description |
Max length |
Since version |
|---|---|---|---|
|
AUTHENTICATION_DATA |
Data being used to authenticate a user. If authentication is via an X.503 certificate, the content of the certificate will be returned in hexadecimal format. |
256-4000 |
8.1.6 |
|
AUTHENTICATION_TYPE |
Indicates how the user was authenticated: DATABASE: A username and password were used. OS: Operating system authentication was used. NETWORK: Authentication was via a network protocol or via the Advanced Networking Option (ANO). PROXY: Authentication was by an Oracle Call Interface (OCI) proxy. |
30 |
8.1.6 |
|
BG_JOB_ID |
If the current session was created by an Oracle background process, this is the job ID of the session; otherwise, it is NULL. |
30 |
8.1.6 |
|
CLIENT_INFO |
Returns up to 64 bytes of user session information stored using the DBMS_APPLICATION_INFO package. |
64 |
8.1.6 ... |
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