Track Long-Running Oracle Operations (v$session_longops)
Shows completion percentage and remaining time for RMAN, index builds and large scans. Helps estimate when a long job will finish.
SELECT sid, serial#, username, opname, target,
sofar, totalwork,
ROUND(100 * sofar / NULLIF(totalwork, 0), 1) AS pct_done,
ROUND(elapsed_seconds / 60, 1) AS elapsed_min,
ROUND(time_remaining / 60, 1) AS remaining_min,
sql_id
FROM v$session_longops
WHERE totalwork > 0
AND sofar < totalwork
ORDER BY time_remaining DESC;Verify in a staging environment prior to running in production. This is a read-only diagnostic query; it does not acquire exclusive locks.
- This script is designed for read-only diagnostics; it does not alter schema or modify data directly.
- Prior to executing on production systems under high load, verify the target database version (Min. Version: 10g).
- Exercise caution with mutating actions (e.g., terminating sessions or dropping indexes) referenced in the notes section.
Other ORACLE Diagnostic Scripts
View All (100)Oracle Active Sessions and Wait Events
Lists active user sessions with the running SQL_ID and wait event. Shows the live picture during performance issues.
Find Blocking Sessions in Oracle
Shows sessions that make others wait, with wait times. Identifies the root session to terminate in lock incidents.
Oracle Tablespace Usage Including Autoextend
Calculates tablespace usage against the real maximum, honoring autoextend limits. Catches space errors like ORA-01653 before they happen.
Top 20 Most Expensive Oracle SQL with v$sqlstats
Shows costliest SQL by elapsed time with executions, CPU and I/O. Tells you which SQL_ID to investigate for tuning.