DBMS_XDB_CONFIG

188 DBMS_XDB_CONFIG

The DBMS_XDB_CONFIG package provides an interface for configuring Oracle XML DB and its repository.

This chapter contains the following topics:

188.1 DBMS_XDB_CONFIG Overview

PL/SQL package DBMS_XDB_CONFIG is the Oracle XML DB resource application program interface (API) for PL/SQL for DBAs to configure their system. This API provides functions and procedures to access and manage Oracle XML DB Repository resources using PL/SQL. It includes methods for managing resource security and Oracle XML DB configuration.

Oracle XML DB Repository is modeled on XML, and provides a database file system for any data. The repository maps path names (or URLs) onto database objects of XMLType and provides management facilities for these objects.

PL/SQL package DBMS_XDB_CONFIG is an API that you can use to manage all of the following:

Oracle XML DB resources
Oracle XML DB security based on access control lists (ACLs). An ACL is a list of access control entries (ACEs) that determines which principals (users and roles) have access to which resources.
Oracle XML DB configuration

188.2 DBMS_XDB_CONFIG Security Model

Owned by XDB, the DBMS_XDB_CONFIG package must be created by SYS or XDB. The EXECUTE privilege is granted to PUBLIC. Subprograms in this package are executed using the privileges of the current user.

188.3 DBMS_XDB_CONFIG Constants

The DBMS_XDB_CONFIG package defines several enumerated constants that should be used for specifying parameter values.

These constants are shown in the following table.

Table 188-1 DBMS_XDB_CONFIG Constants

Constant	Type	Value	Description
`XDB_ENDPOINT_HTTP`	`NUMBER`	1	Defining listener for first HTTP port
`XDB_ENDPOINT_HTTP2`	`NUMBER`	2	Defining listener for second HTTP port
`XDB_ENDPOINT_RHTTP`	`NUMBER`	3	Defining listener for a remote HTTP port
`XDB_ENDPOINT_RHTTPS`	`NUMBER`	4	Defining listener for a remote HTTPS port
`XDB_PROTOCOL_TCP`	`NUMBER`	1	Defining listener for HTTP protocol
`XDB_PROTOCOL_TCPS`	`NUMBER`	2	Defining listener for HTTPS protocol

188.4 Summary of DBMS_XDB_CONFIG Subprograms

The DBMS_XDB_CONFIG package uses subprograms for configuring Oracle XML DB and its repository.

These subprograms are listed in the following table.

Table 188-2 DBMS_XDB_CONFIG Package Subprograms

Subprogram	Description
ADDHTTPEXPIREMAPPING Procedure	Adds to `XDB$CONFIG` a mapping of the URL pattern to an expiration date. This will control the Expire headers for URLs matching the pattern.
ADDMIMEMAPPING Procedure	Adds a mime mapping to XDB configuration
ADDSCHEMALOCMAPPING Procedure	Adds a schema location mapping to the XDB configuration
ADDSERVLET Procedure	Adds a servlet to XDB configuration
ADDSERVLETMAPPING Procedure	Adds a servlet mapping to XDB configuration
ADDSERVLETSECROLE Procedure	Adds a security role `REF` to a specified servlet in XDB configuration
ADDXMLEXTENSION Procedure	Adds adds the following XML extension to the XDB configuration under `<xml-extensions>`: <extension>extension</extension>
CFG_GET Function	Retrieves the session's configuration information as an `XMLType` instance
CFG_REFRESH Procedure	Refreshes the session's configuration information to the latest configuration
CFG_UPDATE Procedure	Updates the configuration information and commits the change.
DELETEHTTPEXPIREMAPPING Procedure	Deletes from `XDB$CONFIG` all mappings of the URL pattern to an expiration date
DELETEMIMEMAPPING Procedure	Deletes the mime mapping for a specified extension from the XDB configuration
DELETESCHEMALOCMAPPING Procedure	Deletes the schema location mapping for a specified schema URL from the XDB configuration
DELETESERVLET Procedure	Deletes a servlet from the XDB configuration
DELETESERVLETMAPPING Procedure	Deletes the servlet mapping for a specified servlet name from the XDB configuration
DELETESERVLETSECROLE Procedure	Deletes the specified role from a servlet in the XDB configuration
DELETEXMLEXTENSION Procedure	Deletes the specified XML extension from the XDB configuration
ENABLEDIGESTAUTHENTICATION Procedure	Enables enables digest authentication
GETFTPPORT Function	Gets the value of the current FTP port
GETHTTPPORT Function	Gets the value of the current HTTP port
GETHTTPCONFIGREALM Function	Gets the realm name
GETHTTPSPORT Function	Gets the value of the current HTTPS port
GETLISTENERENDPOINT Procedure	Gets the parameters of a listener end point corresponding to the XML DB HTTP server
GETREMOTEHTTPPORT Function	Gets the value of a remote HTTP port
GETREMOTEHTTPSPORT Function	Gets the value of a remote HTTPS port
ISGLOBALPORTENABLED Function	Returns the value of the `DBMS_XDB_CONFIG.SETGLOBALPORTENABLED` procedure setting
SETGLOBALPORTENABLED Procedure	Enables the use of a global port for Oracle Enterprise Manager Database Express (EM Express) clients
SETFTPPORT Procedure	Sets the FTP port to a new value
SETHTTPPORT Procedure	Sets the HTTP port to a new value
SETHTTPCONFIGREALM Procedure	Sets the realm to a new value
SETHTTPSPORT Procedure	Sets the HTTPS port to a new value
SETLISTENERENDPOINT Procedure	Sets the parameters of a listener end point corresponding to the XML DB HTTP server
SETLISTENERLOCALACCESS Procedure	Restricts all listener end points of the XML DB HTTP server to listen either only on the localhost interface (when `l_access` is set to `TRUE`) or to listen on both localhost and non-localhost interfaces (when `l_access` is set to `FALSE`)
SETREMOTEHTTPPORT Procedure	Sets the remote HTTP port to a new value
SETREMOTEHTTPSPORT Procedure	Sets the remote HTTPS port to a new value
USEDPORT Procedure	Obtains the port numbers used by other pluggable databases in the same consolidation database

188.4.1 ADDHTTPEXPIREMAPPING Procedure

This procedure adds to XDB$CONFIG a mapping of the URL pattern to an expiration date. This will control the Expire headers for URLs matching the pattern.

Syntax

DBMS_XDB_REPOS.ADDHTTPEXPIREMAPPING (
     pattern    IN    VARCHAR2,
     expire     IN    VARCHAR2);

Parameters

Table 188-3 ADDHTTPEXPIREMAPPING Procedure Parameters

Parameter Description

pattern

URL pattern (only * accepted as wildcards)

expire

Expiration directive, follows the ExpireDefault in Apache's mod_expires:

base [plus] (num type)*
-- base: now | modification
-- type: year|years|month|months|week|weeks|day|days|
minute|minutess|second|seconds

Examples

DBMS_XDB_REPOS.ADDHTTPEXPIREMAPPING ('/public/test1/*', 'now plus 4 weeks');
DBMS_XDB_REPOS.ADDHTTPEXPIREMAPPING (
             '/public/test2/*', 'modification plus 1 day 30 seconds');

188.4.2 ADDMIMEMAPPING Procedure

This procedure adds the following mime mapping to XDB configuration:

<mime-mapping>
<extension>extension</extension>
<mime-type>mimetype</mime-type>
</mime-mapping>

Syntax

DBMS_XDB_CONFIG.ADDMIMEMAPPING(
     extension    IN   VARCHAR2,
     mimetype     IN   VARCHAR2);

Parameters

Table 188-4 ADDMIMEMAPPING Procedure Parameters

Parameter	Description
`extension`	Extension for which a mime type is being added
`mimetype`	Mime type

188.4.3 ADDSCHEMALOCMAPPING Procedure

This procedure adds the following schema location mapping to the XDB configuration:

<schemaLocation-mapping>
     <namespace>namespace</namespace>
     <element>element</element>
      <schemaURL>schemaURL</schemaURL>
</schemaLocation-mapping>

Syntax

DBMS_XDB_CONFIG.ADDSCHEMALOCMAPPING(
     namespace    IN   VARCHAR2,
     element      IN   VARCHAR2,
     schemaURL    IN   VARCHAR2);

Parameters

Table 188-5 ADDSCHEMALOCMAPPING Procedure Parameters

Parameter	Description
`namespace`	Namespace
`element`	Element
`schemaURL`	Schema URL

188.4.4 ADDSERVLET Procedure

This procedure adds a servlet to XDB configuration.

IT adds the following servlet:

<servlet>
     <servlet-name>name</servlet-name>     <servlet-language>language</servlet-language>
     <display-name>dispname</display-name>
     <description>descript</description>
     <servlet-class>class</servlet-class>
     <servlet-schema>schema</servlet-schema>
</servlet>

Syntax

DBMS_XDB_CONFIG.ADDSERVLET(
    name        IN   VARCHAR2,
    language    IN   VARCHAR2,
    dispname    IN   VARCHAR2,
    icon        IN   VARCHAR2 := NULL,
    descript    IN   VARCHAR2 := NULL,
    class       IN   VARCHAR2 := NULL,
    jspfile     IN   VARCHAR2 := NULL,
    plsql       IN   VARCHAR2 := NULL,
    schema      IN   VARCHAR2 := NULL);

Parameters

Table 188-6 ADDSERVLET Procedure Parameters

Parameter	Description
`name`	Servlet name
`language`	Must be one of "C", "Java", "PL/SQL"
`dispname`	Display name
`icon`	Icon
`descript`	Description
`class`	The `class` / `jspfile` / `plsql` function corresponding to this servlet. The first non-`NULL` argument amongst these three is chosen, and the others are treated as `NULL`.
`jspfile`	This parameter is not supported. Always provide `NULL` value for this parameter. System throws an error if the value is not `NULL`.
`plsql`	The `class` / `jspfile` / `plsql` function corresponding to this servlet. The first non-`NULL` argument amongst these three is chosen, and the others are treated as `NULL`.
`schema`	Schema is used to specify `servlet-schema` xml element name in `xdbconfig.xml`. It indicates the Oracle schema in which the Java class is loaded. If you do not specify any value, then the schema is searched using the default resolver specification.

188.4.5 ADDSERVLETMAPPING Procedure

This procedure adds a servlet mapping to XDB configuration.

It adds the following servlet mapping:

<servlet-mapping>
     <servlet-pattern>pattern</servlet-pattern>
     <servlet-name>name</servlet-name>
</servlet-mapping>

Syntax

DBMS_XDB_CONFIG.ADDSERVLETMAPPING(
     pattern   IN   VARCHAR2,     name      IN   VARCHAR2);

Parameters

Table 188-7 ADDSERVLETMAPPING Procedure Parameters

Parameter	Description
`pattern`	Sservlet pattern
`name`	Servlet name

188.4.6 ADDSERVLETSECROLE Procedure

This procedure adds the security role REF to a specified servlet in XDB configuration.

It adds the following security role as shown in the following:

<security-role-ref>
     <role-name>rolename</role-name>
     <role-link>rolelink</role-link>
     <description>descript</description>
</security-role-ref>

Syntax

DBMS_XDB_CONFIG.ADDSERVLETSECROLE(
     servname    IN   VARCHAR2,     rolename    IN   VARCHAR2,     rolelink    IN   VARCHAR2,     descript    IN   VARCHAR2 := NULL);

Parameters

Table 188-8 ADDSERVLETSECROLE Procedure Parameters

Parameter	Description
`servname`	Sservlet name
`rolename`	Role name
`rolelink`	Role link
`descript`	Description

188.4.7 ADDXMLEXTENSION Procedure

This procedure adds an XML extension to the XDB configuration under <xml-extensions>.

It adds the following XML extension to the XDB configuration, under <xml-extensions>:

<extension>extension</extension>

Syntax

DBMS_XDB_CONFIG.ADDXMLEXTENSION(
     extension    IN   VARCHAR2);

Parameters

Table 188-9 ADDXMLEXTENSION Procedure Parameters

Parameter	Description
`extension`	XML extension to be added

188.4.8 CFG_GET Function

This function retrieves the session's configuration information as an XMLType instance.

Syntax

DBMS_XDB_CONFIG.CFG_GET 
 RETURN SYS.XMLType;

188.4.9 CFG_REFRESH Procedure

This procedure refreshes the session's configuration information to the latest configuration.

Syntax

DBMS_XDB_CONFIG.CFG_REFRESH;

188.4.10 CFG_UPDATE Procedure

This procedure updates the configuration information and commits the change.

Syntax

DBMS_XDB_CONFIG.CFG_UPDATE(
   xdbconfig   IN  SYS.XMLTYPE);

Parameters

Table 188-10 CFG_UPDATE Procedure Parameters

Parameter	Description
`xdbconfig`	The new configuration data

188.4.11 DELETEHTTPEXPIREMAPPING Procedure

This procedure deletes from XDB$CONFIG all mappings of the URL pattern to an expiration date.

Syntax

DBMS_XDB_REPOS.DELETEHTTPEXPIREMAPPING(
     pattern  IN   VARCHAR2);

Parameters

Table 188-11 DELETEHTTPEXPIREMAPPING Procedure Parameters

Parameter	Description
`pattern`	URL pattern (only * accepted as wildcards)

188.4.12 DELETEMIMEMAPPING Procedure

This procedure deletes the mime mapping for a specified extension from the XDB configuration.

Syntax

DBMS_XDB_CONFIG.DELETEMIMEMAPPING(
     extension    IN   VARCHAR2);

Parameters

Table 188-12 DELETEMIMEMAPPING Procedure Parameters

Parameter	Description
`extension`	Extension for which a mime type is to be deleted

188.4.13 DELETESCHEMALOCMAPPING Procedure

This procedure deletes the schema location mapping for a specified schema URL from the XDB configuration.

Syntax

DBMS_XDB_CONFIG.DELETESCHEMALOCMAPPING(
     schemaURL    IN   VARCHAR2);

Parameters

Table 188-13 DELETESCHEMALOCMAPPING Procedure Parameters

Parameter	Description
`schemaURL`	Schema URL

188.4.14 DELETESERVLET Procedure

This procedure deletes a servlet from the XDB configuration.

Syntax

DBMS_XDB_CONFIG.DELETESERVLET(
     name        IN   VARCHAR2);

Parameters

Table 188-14 DELETESERVLET Procedure Parameters

Parameter	Description
`name`	Servlet name

188.4.15 DELETESERVLETMAPPING Procedure

This procedure deletes the servlet mapping for a specified servlet name from the XDB configuration.

Syntax

DBMS_XDB_CONFIG.DELETESERVLETMAPPING(
     name      IN   VARCHAR2);

Parameters

Table 188-15 DELETESERVLETMAPPING Procedure Parameters

Parameter	Description
`name`	Servlet name

188.4.16 DELETESERVLETSECROLE Procedure

This procedure deletes the specified role from a servlet in the XDB configuration.

Syntax

DBMS_XDB_CONFIG.DELETESERVLETSECROLE(
     servname    IN   VARCHAR2,     rolename    IN   VARCHAR2);

Parameters

Table 188-16 DELETESERVLETSECROLE Procedure Parameters

Parameter	Description
`servname`	Servlet name
`rolename`	Name of the role to be deleted

188.4.17 DELETEXMLEXTENSION Procedure

This procedure deletes the specified XML extension from the XDB configuration.

Syntax

DBMS_XDB_CONFIG.DELETEXMLEXTENSION(
     extension    IN   VARCHAR2);

Parameters

Table 188-17 DELETEXMLEXTENSION Procedure Parameters

Parameter	Description
`extension`	XML extension to be deleted

188.4.18 ENABLEDIGESTAUTHENTICATION Procedure

This procedure enables digest authentication. It will list digest as the first authentication mechanism to be used by the XML DB HTTP server.

Syntax

DBMS_XDB_CONFIG.ENABLEDIGESTAUTHENTICATION;

188.4.19 GETFTPPORT Function

This procedure gets the value of the current FTP port.

Syntax

DBMS_XDB_CONFIG.GETFTPPORT
 RETURN NUMBER;

188.4.20 GETHTTPCONFIGREALM Function

This function gets the realm name. Definition of a realm is referenced in IETF's RFC2617.

Syntax

DBMS_XDB_CONFIG.GETHTTPCONFIGREALM
 RETURN VARCHAR2;

188.4.21 GETHTTPPORT Function

This function gets the value of the current HTTP port.

Syntax

DBMS_XDB_CONFIG.GETHTTPPORT
 RETURN NUMBER;

188.4.22 GETHTTPSPORT Function

This procedure gets the value of the current HTTPS port.

Syntax

DBMS_XDB_CONFIG.GETHTTPSPORT
 RETURN NUMBER;

Usage Notes

Returns NULL if no port has been configured

188.4.23 GETLISTENERENDPOINT Procedure

This procedure retrieves the parameters of a listener end point corresponding to the XML DB HTTP server. The parameters of both HTTP and HTTP2 end points can be retrieved by invoking this procedure.

Syntax

DBMS_XDB_CONFIG.GETLISTENERENDPOINT (
   endpoint  IN   NUMBER, 
   host      OUT  VARCHAR2,    port      OUT  NUMBER, 
   protocol  OUT  NUMBER);

Parameters

Table 188-18 GETLISTENERENDPOINT Procedure Parameters

Parameter	Description
`endpoint`	End point to be retrieved. Its value can be `XDB_ENDPOINT_HTTP` or `XDB_ENDPOINT_HTTP2`.
`host`	Interface on which the listener end point listens
`port`	Port on which the listener end point listens
`protocol`	Transport protocol accepted by the listener end point

188.4.24 GETREMOTEHTTPPORT Function

This function gets the value of a remote HTTP port.

Syntax

DBMS_XDB_CONFIG.GETREMOTEHTTPPORT
 RETURN NUMBER;

188.4.25 GETREMOTEHTTPSPORT Function

This function gets the value of a remote HTTPS port.

Syntax

DBMS_XDB_CONFIG.GETREMOTEHTTPSPORT
 RETURN NUMBER;

188.4.26 ISGLOBALPORTENABLED Function

This procedure returns the value of the GlobalPortEnabled setting.

Syntax

DBMS_XDB_CONFIG.ISGLOBALPORTENABLED RETURN BOOLEAN;

Usage Notes

This procedure returns TRUE if GlobalPortEnabled has been set to TRUE; otherwise it returns FALSE.
In a multitenant environment, you can execute this function in both the CDB root and PDBs.

188.4.27 SETFTPPORT Procedure

This procedure sets the FTP port to a new value.

Syntax

DBMS_XDB_CONFIG.SETFTPPORT(
   new_port  IN  NUMBER);

Parameters

Table 188-19 SETFTPPORT Procedure Parameters

Parameter	Description
`new_port`	Value to which the FTP port is set

188.4.28 SETGLOBALPORTENABLED Procedure

This procedure enables Oracle Enterprise Manager Database Express (EM Express) clients to use a single port (called a global port), for the session rather than using a port dedicated to the PDB.

Syntax

DBMS_XDB_CONFIG.SETGLOBALPORTENABLED (
   isenabled  IN  BOOLEAN);

Parameters

Table 188-20 SETGLOBALPORTENABLED Procedure Parameters

Parameter Description

Parameter	Description
`isenabled`	`TRUE` enables the EM Express client to use a global port for the session rather than using the PDB that allocated the port. `FALSE` enables the port ID to determine the PDB to use. The default is `TRUE` for PDBs but `FALSE` for the CDB root.

isenabled

TRUE enables the EM Express client to use a global port for the session rather than using the PDB that allocated the port.

FALSE enables the port ID to determine the PDB to use.

The default is TRUE for PDBs but FALSE for the CDB root.

Usage Notes

Use the DBMS_XDB_CONFIG.SETGLOBALPORTENABLED procedure if you use EM Express to manage database ports in a multitenant environment.
To use a global port, you must enable it in both the CDB and the PDB. PDBs have it enabled by default. For CDBs, you must run the DBMS_XDB_CONFIG.SETGLOBALPORTENABLED procedure in the CDB root.
After you set DBMS_XDB_CONFIG.SETGLOBALPORTENABLED to TRUE, then you must specify a PDB to use for the global port. You can do so by specifying the PDB name in the Container Name field of the EM Express login page. For example, if you enter hr_pdb, then the EM Express URL becomes http://server_name:5500/hr_pdb/em. This example uses the port 5500 in the CDB root, which in turn routes messages to the EM Express in the PDB hr_pdb. The port can be an HTTP or HTTPS port.
The PDB that you specify in the EM Express login page must be open in read/write mode before you can run DBMS_XDB_CONFIG.SETGLOBALPORTENABLED. You can check the read/write mode status of a PDB by connecting to the PDB and then querying the OPEN_MODE column of the V$PDBS dynamic view.
The DBMS_XDB_CONFIG.ISGLOBALPORTENABLED function returns the value of the DBMS_XDB_CONFIG.SETGLOBALPORTENABLED setting.
You can use the XDB_PROTOCOLS lockdown profile to control the security for the global port.

188.4.29 SETHTTPPORT Procedure

This procedure sets the HTTP port to a new value.

Syntax

DBMS_XDB_CONFIG.SETHTTPPORT(
   new_port  IN  NUMBER);

Parameters

Table 188-21 SETHTTPPORT Procedure Parameters

Parameter	Description
`new_port`	Value to which the HTTP port is set

188.4.30 SETHTTPCONFIGREALM Procedure

This procedure modifies the realm value.

Syntax

DBMS_XDB_CONFIG.SETHTTPCONFIGREALM(
   realm IN VARCHAR2);

Parameters

Table 188-22 SETHTTPPORT Procedure Parameters

Parameter	Description
`realm`	Realm as defined in IETF's RFC2617

188.4.31 SETHTTPSPORT Procedure

This procedure sets the HTTPS port to a new value.

Syntax

DBMS_XDB_CONFIG.SETHTTPSPORT(
   new_port  IN  NUMBER);

Parameters

Table 188-23 SETHTTPSPORT Procedure Parameters

Parameter	Description
`new_port`	Value to which the HTTPS port is set

188.4.32 SETLISTENERENDPOINT Procedure

This procedure sets the parameters of a listener end point corresponding to the XML DB HTTP server.

Both HTTP and HTTP2 end points can be set by invoking this procedure.

Syntax

DBMS_XDB_CONFIG.SETLISTENERENDPOINT (
   endpoint  IN  NUMBER, 
   host      IN  VARCHAR2,    port      IN  NUMBER, 
   protocol  IN  NUMBER);

Parameters

Table 188-24 SETLISTENERENDPOINT Procedure Parameters

Parameter	Description
`endpoint`	End point to be set. Its value can be `XDB_ENDPOINT_HTTP` or `XDB_ENDPOINT_HTTP2`.
`host`	Interface on which the listener end point is to listen. Its value can be '`LOCALHOST`,' `NULL`, or a hostname. If its value is '`LOCALHOST`' the listener end point is permitted to only listen on the localhost interface. If its value is `NULL` or hostname, the listener end point is permitted to listen on both localhost and non-localhost interfaces.
`port`	Port on which the listener end point is to listen
`protocol`	Transport protocol that the listener end point is to accept. Its value can be `XDB_PROTOCOL_TCP` or `XDB_PROTOCOL_TCPS`

188.4.33 SETLISTENERLOCALACCESS Procedure

This procedure restricts all listener end points of the XML DB HTTP server to listen either only on the localhost interface (when l_access is set to TRUE) or to listen on both localhost and non-localhost interfaces (when l_access is set to FALSE).

Syntax

DBMS_XDB_CONFIG.SETLISTENERLOCALACCESS (
   l_access   BOOLEAN);

Parameters

Table 188-25 SETLISTENERLOCALACCESS Procedure Parameters

Parameter	Description
`l_access`.	`TRUE` or `FALSE`.

188.4.34 SETREMOTEHTTPPORT Procedure

This procedure sets a remote HTTP port to a new value.

Syntax

DBMS_XDB_CONFIG.SETREMOTEHTTPPORT(
   new_port  IN  NUMBER);

Parameters

Table 188-26 SETREMOTEHTTPPORT Procedure Parameters

Parameter	Description
`new_port`	Value to which the remote HTTP port is set

188.4.35 SETREMOTEHTTPSPORT Procedure

This procedure sets a remote HTTPS port to a new value.

Syntax

DBMS_XDB_CONFIG.SETREMOTEHTTPSPORT (
   new_port  IN  NUMBER);

Parameters

Table 188-27 SETREMOTEHTTPSPORT Procedure Parameters

Parameter	Description
`new_port`	Value to which the remote HTTPS port is set

188.4.36 USEDPORT Function

This function obtains the port numbers used by other pluggable databases in the same consolidation database.

Syntax

DBMS_XDB_CONFIG.USEDPORT RETURN XMLTYPE;