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SSH Tectia
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Enabling Direct MVS Dataset Access (z/OS)

When SSH Tectia Client is used to rename or transfer files or mainframe datasets to/from z/OS hosts, and direct MVS dataset access on the server side is needed, you need to define the following environment variables on the client:

  • SSH_SFTP_STREAMING_MODE=ext to activate extended streaming

  • SSH_SFTP_CHECKSUM_MODE=no to deactivate the checksum mode

    The checksums cannot be used with streaming, because checksum calculation requires staging, but staging and streaming are mutually exclusive.

Use the extended streaming only in connections to z/OS hosts, as it can slow down the transfer of small files in other environments.

For information on the --streaming=ext command-line option, see scpg3(1) and sftpg3(1).

For information on the --rename command-line option, see sftpg3(1).

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