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1.select name,log_mode from v$database;
NAME               LOG_MODE
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QUERY           NOARCHIVELOG
2.ʹÓÃARCHIVE LOG LIST ÃüÁî
Database log mode              No Archive Mode
Automatic archival             Disabled
Archive destination            /data/oracle/product/10.2.0/db_1//dbs/arch
Oldest online log sequence     739
Current log sequence           741
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