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| ==Summary==
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| <dl>
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| <dt>Privileges
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| <dd>System manager
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| <dt>Function
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| <dd>You can switch streams-parallel, ring, concatenated, GDG-to the next member at any time.
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| </dl>
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| ==Syntax==
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| <p class="syntax">SWITCH STREAM streamname [ RESET ]
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| </p>
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| <b>Where:</b>
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| streamname specifies CCAJRNL, CCAJLOG, CHKPOINT, or CHKPNTS. The command is valid for only these streams.
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| ==Usage notes==
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| If you specify:
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| <ul>
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| <li>
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| <p>Journal stream CCAJRNL or CCAJLOG, the currently active data set is closed and the next data set defined to the stream is opened. </p>
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| </li>
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| <li>
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| <p>Checkpoint stream CHKPOINT or CHKPNTS, the currently active data set in the stream is closed after the next record is written to the data set.</p>
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| </li>
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| </ul>
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| <p>If a SWITCH STREAM CCAJRNL command is issued during CHECKPOINT EXTENDED QUIESCE command processing, the journal will be switched, a new checkpoint issued, and the duration extended quiesce time-out set in CPQZSECS will be reset to its maximum, original value-disregarding the already elapsed time.</p>
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| <table>
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| <tr><th><var>RESET</var></th>
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| <td>This optional parameter will cause any disabled parallel GDG members to be reopened during the switch. </td>
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| </p><td>Valid only for a CCAJLOG stream specified as a Parallel GDG.</tr></table>
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| [[Category: System manager commands]]
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| [[Category:Commands]]
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