Syntax to crosscheck archive logs in RMAN

Sometimes you end up with missing archive logs for whatever reason, and RMAN backup fails.
Running crosscheck will fix the problem.

$ rman

Recovery Manager: Release 10.2.0.4.0 - Production on Wed Sep 1 10:05:02 2010

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RMAN> connect target /

connected to target database: [SID] (DBID=[DBID])

RMAN> crosscheck archivelog all;