Errors during emergency restart backout

IMS handles both read errors and failures to open a database during emergency restart in the same way as it does during dynamic backout.

For read errors, however, other restart backouts for the same database can take place, even though a database is stopped.

If a nonrecoverable OLDS read error occurs during backout (on both OLDSs if dual logging is in effect), run the Log Recovery utility and attempt to restart IMS again.

During restart processing, but before initiating backout, IMS determines if it must close the OLDS using the WADS. If a nonrecoverable read error occurs on the WADS, committed log records might be lost. In this case, you must close and archive the OLDS, and then reconstruct the affected databases by performing forward recovery and batch backout.