December 2002
Intermediate to advanced
928 pages
85h 29m
English
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Name
ALTER SYSTEM SUSPEND/RESUME
Synopsis
ALTER SYSTEM SUSPEND | RESUME
SQL*Plus command. Suspends all I/O operations to the database to accommodate third-party products that require this type of pause.
At many sites, third-party tools are used to mirror an Oracle database. You can back up the mirrored database without affecting online operations by splitting the mirror and then backing it up. However, some mirrored systems cannot be split while there are I/O operations occurring, so in these cases you will have to suspend I/O while you are splitting the mirror.
Make sure to put the relevant tablespaces in BACKUP mode before you suspend I/O and take them back out of BACKUP mode after you resume I/O operations.
Note that there are many other options for the ALTER SYSTEM command in addition to those shown here. That command is described in Chapter 7. See the index for specific pointers to the discussion of additional command keywords.
Keywords
- SUSPEND
Suspends all I/O operations to all database files.
- RESUME
Resumes I/O operations to all database files.
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