1 New Failures — Asm Health Checker Found

PROMPT Recent health check failures: SELECT check_time, failure_count, failure_reason FROM v$asm_health_checker_history WHERE check_time > SYSDATE - 1 ORDER BY check_time DESC;

The message “found 1 new failure” means the checker detected a new problem since its last run—this could be a missing disk, offline path, corrupt metadata, or accessibility issue. a. Check the ASM Alert Log # As grid user cd $ORACLE_BASE/diag/asm/+asm/+ASM1/trace tail -100 alert_+ASM1.log | grep -i "health\|failure\|error" Look for entries like: asm health checker found 1 new failures

WARNING: ASM Health Checker found 1 new failure Details: Disk group DATA, disk DATA_0000 is offline Connect to ASM instance: asm health checker found 1 new failures

sqlplus / as sysasm Check recent failures: asm health checker found 1 new failures

But —they often lead to DG dismounts. 7. Sample Diagnostic Script Save as asm_health_check.sql :