MSO Dynamic VTAM Re-configuration

MSO installations can re-configure the VTAM LU2 applid used for MSO FOCUS access. This allows them to dynamically switch to a newly specified LU2 applid without recycling the MSO region.

In this section:

Usage

Conditioning MSO to Use the VTAM LU2 applid

Performing the Dynamic Switch to the New applid

Special Considerations

Error Messages

Usage

The SET LU2_NAME command is issued at the MSO console or via the modify command at the MVS system console. This conditions the MSO region to use the new LU2 applid when the RESTART LU2_NAME command is issued from MSO console or the OS/390 system console. When the RESTART LU2_NAME command is issued, current MSO FOCUS sessions are terminated. The newly specified LU2_NAME is then activated for MSO FOCUS logons. All sessions connected to the MSO region from TSO or CICS are unaffected.

It is recommended that all MSO console commands be issued while viewing the MSO LOG. The command's effect is then immediately visible by pressing ENTER.


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Conditioning MSO to Use the VTAM LU2 applid

MSO Console

SET LU2_NAME = applid_name

OS/390 System Console

F msojobname,SET LU2_NAME = applid_name

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Performing the Dynamic Switch to the New applid

MSO Console

RESTART LU2_NAME 

OS/390 System Console

F msojobname,RESTART LU2_NAME

Note: The keyword LU2_APPLID is synonymous with LU2_NAME and the two may be used interchangeably.


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Special Considerations

The VTAM LU2 applid name specified in the SET LU2_NAME command must be an active LU2 applid that is defined with the following characteristics in SYS1.VTAMLST:

FOCUS  APPL  AUTH=(VPACE,PASS),EAS=10,PARSESS=YES

Note: The PASS specification is only required if the Load Balancing feature of MSO is used.


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Error Messages

MSO13360  INVALID KEYWORD IN SET COMMAND

The keyword in the SET command is unknown. Please check the spelling of the keyword and be sure our documentation matches the version of the program you are using.

MSO13361  INVALID OPERAND IN SET COMMAND

A valid SET command keyword has an invalid operand. Please check the spelling of the operand and be sure your documentation matches the version of the program you are using.

MSO13362 LU2_APPLID IS NOW SET TO %1

The specified new value for LU2_APPLID is now in effect.


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