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What ATS filters, what recruiters actually read, and the exact structure that gets callbacks in India's tech hiring market
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What ATS filters, what recruiters actually read, and the exact structure that gets callbacks in India's tech hiring market
The monitoring alert arrived at 2:48 AM: "Standby apply lag crossing 90 minutes." I connected to DGMGRL immediately. SHOW CONFIGURATION confirmed it: the MRP process was not running on the standby. Every transaction committed on the primary for the past 90 minutes was sitting unprocessed in Standby Redo Logs, and the gap was growing by the second.
In my 15 years managing Oracle production environments, a stopped MRP process is one of the most common Data Guard incidents I have resolved. It is not complicated once you know which of the five root causes you are dealing with. The problem is that each cause has a completely different fix, and applying the wrong one wastes critical time.
This guide gives you the exact decision path, the diagnostic commands to identify your specific cause, and the precise fix for each scenario. In most cases the MRP process not running in Data Guard is resolved in under 5 minutes.
Full Error: ORA-16766: Redo Apply is stopped
This error appears in DGMGRL SHOW CONFIGURATION output against the standby database. It means the Managed Recovery Process (MRP) on the standby has stopped and redo is no longer being applied. The standby is diverging from the primary with every passing second.
It was 3:22 AM. The monitoring alert fired: "Data Guard configuration warning — ORA-16766 on standby." Apply lag had jumped from zero to 47 minutes in under an hour. The standby database was alive, connected, receiving redo, but not applying any of it.
ORA-16766 is one of the most common Oracle Data Guard errors in production Oracle 19c environments. It always means the same thing: the MRP process on the standby has stopped. But the reasons it stops, and the correct fix for each reason, are completely different.
This guide covers every root cause of ORA-16766 in Oracle 19c, the exact DGMGRL and SQL commands to diagnose it, and the step-by-step fix commands for each scenario. Most ORA-16766 errors are resolved in under 5 minutes once you know which cause you are dealing with.