Plan to move from SHARED mode to DISTRIBUTED mode for consoles
Description
z/OS V2R2 is the last release in which the SHARED console mode is supported. You must migrate to DISTRIBUTED mode, which was introduced in z/OS V1R10.
Table 1 provides more details about the migration action. Use this information to plan your changes to the system.
| Element or feature: | BCP |
|---|---|
| When change was introduced: | See Statement of direction: IBM z/OS IBM United States Software Announcement 212-086 April 11, 2012 |
| Applies to migration from: | z/OS V2R1 and z/OS V1R13. |
| Timing: | Before installing z/OS V2R2. |
| Is the migration action required? | No, but recommended if you are using SHARED console mode. When shared mode is removed, you are required to move to DISTRIBUTED mode. |
| Target system hardware requirements: | None. |
| Target system software requirements: | None. |
| Other system (coexistence or fallback) requirements: | Fallback considerations exist; see topic on migration and fallback considerations in z/OS MVS Planning: Operations. |
| Restrictions: | None. |
| System impacts: | None. |
| Related IBM Health Checker for z/OS check: | Use check IBMCNZ,CNZ_CONSOLE_OPERATING_MODE to determine whether your installation is operating in the DISTRIBUTED console mode, which is preferred. |
Steps to take
Move from SHARED mode to DISTRIBUTED mode for your console environment. Note that the default changed from SHARED to DISTRIBUTED mode in z/OS V1R13.
Tip: You can check the current mode by using the command DISPLAY
OPDATA,MODE.
Reference information
For more information,
see the following references:
- Statement of direction: IBM z/OS IBM United States Software Announcement 212-086 April 11, 2012.
- For DISTRIBUTED mode, see z/OS MVS Planning: Operations