IBM Magstar 3494 manual Library Manager Screens DFSMS/MVS Environment

When the active library manager fails in a dual library manager environment, it may or may not display a message. The standby library manager displays a message stating that a switch over is being made, which can take approximately 10 minutes to complete.

Note: Some library manager recovery operations may take longer than expected to complete. Allow sufficient time for the library manager to complete its switch over recovery procedures. Seek assistance before interrupting the library manager recovery operation.

Library Manager Screens (DFSMS/MVS Environment)

A library manager failure causes the library manager console to display certain messages. If the failure has not affected the display and the display is powered on, the library manager may have one or more of the following symptoms.

Single Library Manager Con®guration:: v `Severe execution error' dialog box

v System hang with non-responsive library manager keyboard or mouse

Note: If this occurs, press Alt-tto make sure the keyboard and display are not being controlled from the remote console.

v Mode changes which show Pending for an excessive length of time

v Error recovery in progress

Dual Library Manager Con®guration::

v `Switching to active library manager' dialog box displayed

v `Severe execution error' dialog box

v System hang with non-responsive library manager keyboard or mouse

Note: If this occurs, press Alt-tto make sure the keyboard and display are not

being controlled from the remote console.

v Mode changes which show Pending for an excessive length of time

v Error recovery in progress

To manually restart a library manager, go to ªLibrary Manager Action ± Library

Manager Recovery Begins (DFSMS/MVS Environment)º on page 263.

Host Messages (DFSMS/MVS Environment)

When the library manager fails, the host operator may or may not see one or more
of the following messages displayed on the host console:
v Library manager CHECK-1 condition
v Library manager equipment check
v	Library path check
v	Library manager offline
v	Library manager switchover in progress

The library manager operator and the host operator should actively communicate with each other to reduce the amount of down time and ensure the accuracy of this procedure.

262Magstar 3494 Tape Library Operator Guide