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27.3 sys Schema Progress Reporting
The following sys
schema views
provide progress reporting for long-running transactions:
processlist
session
x$processlist
x$session
Assuming that the required instruments and consumers are enabled,
the progress
column of these views shows the
percentage of work completed for stages that support progress
reporting.
Stage progress reporting requires that the
events_stages_current
consumer be enabled, as
well as the instruments for which progress information is desired.
Instruments for these stages currently support progress reporting:
stage/sql/Copying to tmp table
stage/innodb/alter table (end)
stage/innodb/alter table (flush)
stage/innodb/alter table (insert)
stage/innodb/alter table (log apply index)
stage/innodb/alter table (log apply table)
stage/innodb/alter table (merge sort)
stage/innodb/alter table (read PK and internal sort)
stage/innodb/buffer pool load
For stages that do not support estimated and completed work
reporting, or if the required instruments or consumers are not
enabled, the progress
column is
NULL
.
Document created the 26/06/2006, last modified the 26/10/2018
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