Change Device Desc (APPC) (CHGDEVAPPC)

The Change Device Description (APPC) (CHGDEVAPPC) command changes a device description for an Advanced Program-to-Program Communications (APPC) device.

Parameters

Keyword	Description	Choices	Notes
DEVD	Device description	Name	Required, Key, Positional 1
ONLINE	Online at IPL	SAME, YES, *NO	Optional
MODE	Mode	Single values: SAME Other values (up to 14 repetitions): Communications name, NETATR	Optional
MSGQ	Message queue	Single values: SAME, CTLD, SYSOPR Other values: Qualified object name*	Optional
	Qualifier 1: Message queue	Name, QSYSOPR
	Qualifier 2: Library	Name, LIBL, CURLIB
LOCADR	Local location address	Character value, *SAME	Optional
SNGSSN	Single session	Single values: SAME, NO Other values: Element list	Optional
	Element 1: Single session capable	*YES
	Element 2: Number of conversations	1-512
LCLCTLSSN	Locally controlled session	SAME, YES, *NO	Optional
PREESTSSN	Pre-established session	SAME, YES, *NO	Optional
LOCPWD	Location password	Character value, SAME, NONE	Optional
SECURELOC	Secure location	SAME, YES, NO, VFYENCPWD	Optional
TEXT	Text 'description'	Character value, SAME, BLANK	Optional

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Device description (DEVD)

Specifies the name of the device description being changed.

This is a required parameter.

Online at IPL (ONLINE)

Specifies whether this object is automatically varied on at initial program load (IPL).

*SAME: The value does not change.

*YES: This device is varied on automatically at IPL.
*NO: This device is not varied on automatically at IPL.

Mode (MODE)

Specifies the names of the modes that define the sessions on this device.

You can enter multiple values for this parameter.

*SAME: The value does not change.

*NETATR: The remote network identifier specified in the network attributes is used.

mode-name: Specify the name of mode descriptions used by this device. The mode name cannot be CPSVCMG or SNASVCMG; these mode names are reserved for system use.
Specify up to 14 mode names.

Message queue (MSGQ)

Specifies the message queue to which operational messages for this device are sent.

*SAME: The value does not change.

*CTLD: Messages are sent to the message queue defined in the attached controller. The message queue is determined when the device is varied on.

*SYSOPR: Messages are sent to the system operator message queue (QSYS/QSYSOPR).

message-queue-name: Specify the name of the message queue to which operational messages are sent.
*LIBL: All libraries in the job's library list are searched until the first match is found.
*CURLIB: The current library for the job is searched. If no library is specified as the current library for the job, the QGPL library is used.
library-name: Specify the name of the library to be searched.

Local location address (LOCADR)

Specifies the local location address for this device.

The possible values are 00 to FF.

*SAME: The value does not change.

Single session (SNGSSN)

Specifies whether a single or multiple sessions are used with remote locations. If single sessions are used, the number of conversations must be specified.

Single values

*SAME: The value does not change.

*NO: Multiple sessions are used.

Element 1: Single session capable

*YES: Single sessions are used.

Element 2: Number of conversations

conversations: Specify a valid value that ranges from 1 through 512 for the number of conversations.

Locally controlled session (LCLCTLSSN)

Specifies whether the session is a locally controlled session.

*SAME: The value does not change.

*NO: The single session is remotely controlled.
*YES: The single session is locally controlled.

Pre-established session (PREESTSSN)

Specifies whether the session is established when the connection with the remote system is established.

*SAME: The value does not change.

*NO: The session is not established automatically at connection time.
*YES: The session is established automatically at connection time.

Location password (LOCPWD)

Specifies the password to be used to validate a connection.

*SAME: The value does not change.

*NONE: There is no password.
location-password: Specify the password as a string of hexadecimal characters.

Secure location (SECURELOC)

Specifies how security information is handled for program start requests received from remote systems. The value is sent to the remote system when sessions are established. It is used in determining how allocate or evoke requests should be built. The value only applies to conversations started with the SECURITY(SAME) level of security.

*SAME: The value does not change.

*NO: The remote system is not a secure location. Security validation done by the remote system is not accepted. SECURITY(SAME) conversations are treated as SECURITY(NONE). No security information will be sent with allocate or evoke requests.
*YES: The remote system is a secure location and the local system will accept security validation done by remote systems. For SECURITY(SAME) conversations, the local system allows the remote system to verify user passwords. On the remote system, user IDs are retrieved from the security manager. The user IDs are then sent with an already verified indicator in the allocate or evoke requests.
*VFYENCPWD: The remote system is not a secure location. For SECURITY(SAME) conversations, the remote system is not allowed to send the already verified indicator. On the remote system, user IDs and passwords are retrieved from the security manager. Passwords are then encrypted and sent with the user IDs in the allocate or evoke requests, to be verified by the local system. This value should only be used if the remote system is using V3R2M0 operating system or later. If the remote system does not support password protection then session establishment will not be allowed. For remote systems that support password protection, but do not support verification of encrypted passwords (VFYENCPWD), conversations will be treated as SECURITY(NONE).

Text 'description' (TEXT)

*SAME: The text (if any) does not change.
*BLANK: No text is specified.

character-value: Specify no more than 50 characters of text, enclosed in apostrophes.

Examples

CHGDEVAPPC   DEVD(APPC1)  SNGSSN(*NO)

This command changes the device description for communication device APPC1 so it is no longer limited to single sessions.

Error messages

*ESCAPE Messages

CPF2618: Device description &1 not changed.