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By v$rman_ backup_ job_ Oracle "bug" caused by details
2022-07-06 12:18:00 【wx5caecf2ed0645】
Recently checked backup , Find the problem : Incremental backup of a production library requires 12 Hours , Normal backup only needs 5 second . Look at the screenshot
Get into rman Console , Check the relevant backup , The display duration is 5 second .
Describe the above problem again : call v$rman_backup_job_details , Query display 196 The backup lasted 12 Hours , and rman Is displayed 196 Backup times are 5 second . Check the file for Linux The last visit time is 7-30 11:01
That's what I said : from v$rman_backup_job_details Caused by the Oracle“bug” problem . My first thought is , Is it right? oracle One of the bug,2 Side time statistics are inconsistent .
Okay , The problem is clear ? Now start to solve the problem .
The problem is found , The problem bothered me for a long time , But it has never been solved . The chance finally came , once , Check the scheduled task log in the system , Abnormal record found : Check the system /var/log/cron journal , The discovery time is later than the system time 12 Hours . There is a problem with the system time zone . Ecstasy in heart , It's wired .
Check the time date, normal . see /etc/sysconfig/clock, Erroneous , Write :
zone="America/New_York", Just the difference 12 Time zone .
The problem is finally solved : adjustment /etc/sysconfig/clock by shanghai The time zone , restart .
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