November 2001
Intermediate to advanced
126 pages
3h
English
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Running SQL and O/S Commandsfrom Within RMAN
Sometimes you may want to run an SQL statement from within RMAN. Use RMAN’s sql command to do this. For example:
RMAN> sql "alter system switch logfile";If there are single quote marks in your SQL, you need to use two single quote marks as shown in this next example:
RMAN> sql "alter database datafile
''/d0101/ordadta/brdstn/users_01.dbf'' offline";You can also run O/S commands using a similar technique with the host command:
RMAN> host "ls";Some SQL commands, such as ALTER DATABASE, are directly supported by RMAN. These can be executed directly from the RMAN command prompt, without using the sql command. For example:
RMAN> alter database mount;Note that the complete syntax of the SQL ALTER DATABASEcommand is not supported from within RMAN. Refer to Section 1.9 for RMAN-supported ALTER DATABASE syntax.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.