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When a failure or exception condition is reported to the host, the result is
dependent on the host's operating system. For an MVS , OS/390, or z/OS host, the
reported condition results in a console message. "DFSMS/MVS System-Managed
Tape Messages" on page 443 describes the console message that the MVS, OS/390,
or z/OS operating system under the DFSMS/MVS System-Managed Tape
environment generates as a result of a 3494 Tape Library-reported failure or
exception condition. See the following documentation for the messages provided
and their format for other operating systems and environments:
v MVS Basic Tape Library Support (BTLS) - User's Guide and Reference
v VM/ESA or z/VM
v OS/400
v AIX
For several of the conditions, one of the actions that can be specified is to select the
Operator Intervention menu. See "Operator Intervention" on page 353 for the
actions to take for each intervention condition.
Library Manager Failure Recovery Procedures
Notes:
When a failure occurs in the Library Manager from either a CHECK-1 or a
processor exception, or when the Library Manager experiences certain hardware
failures, do the following procedures to recover host operations. These recovery
procedures allow recovery from many different scenarios. You must follow these
steps in the exact sequence to achieve a complete recovery.
Throughout the recovery procedures, you are directed to do certain actions at
either the Library Manager or at the host operating console. It may be helpful to
have two people do the various tasks involved in this procedure due to locations
of the 3494 Tape Library.
For recovery procedures of DFSMS/MVS (z/OS), see "Library Manager Failure in
MVS/BTLS" on page 439. For recovery procedures of MVS/BTLS, see "Library
Manager Failure in MVS/BTLS" on page 439.
Library Manager Failure in DFSMS/MVS (z/OS)
The following failure conditions cause you to initiate this procedure:
v Library Manager CHECK-1 condition
v Library Manager hardware failure
®
1. This procedure is designed for the recovery of DFSMS/MVS, z/OS, or
MVS/BTLS host sessions. If you are using any other host platform,
contact your software provider before continuing with this procedure.
2. These procedures apply to both single Library Manager and dual
Library Manager configurations. In a dual Library Manager
configuration, these procedures apply to the activation of the standby
Library Manager when the active Library Manager fails.
3. Host actions may include varying the 3494 Tape Library online after a
short delay for the conditions that restart the Library Manager. Host
tape operations or short jobs may have to be resubmitted, and operator
actions from the Library Manager console may require restart.
Chapter 8. Problem Determination Procedures
435
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