What is

PostgresDB 25001: Active SQL Transaction

 ?

When encountering error 25001: Active SQL Transaction in Postgres, the user should immediately execute the following actions for investigation:

  1. Identify Active Transactions:
  2. SELECT * FROM pg_stat_activity WHERE state IN ('active', 'idle in transaction');
  3. Check for Long-Running Queries:
  4. SELECT pid, now() - pg_stat_activity.query_start AS duration, query, state
    FROM pg_stat_activity
    WHERE (now() - pg_stat_activity.query_start) > interval '5 minutes';
  5. Terminate Long-Running Transactions if Necessary (Caution Advised):
  6. SELECT pg_terminate_backend(pid)
    FROM pg_stat_activity
    WHERE pid = [PID of the transaction to terminate];
  7. Replace [PID of the transaction to terminate] with the actual PID of the problematic transaction.
  8. Analyze Locks That Might Be Causing Issues:
  9. SELECT bl.pid AS blocked_pid, a.usename AS blocked_user, kl.pid AS blocking_pid, ka.usename AS blocking_user, a.query AS blocked_query
    FROM pg_catalog.pg_locks bl
    JOIN pg_catalog.pg_stat_activity a ON a.pid = bl.pid
    JOIN pg_catalog.pg_locks kl ON kl.transactionid = bl.transactionid AND kl.pid != bl.pid
    JOIN pg_catalog.pg_stat_activity ka ON ka.pid = kl.pid
    WHERE NOT bl.granted;

These steps should help in identifying the cause of the “Active SQL Transaction” error and potentially resolving it by terminating any problematic transactions or addressing locking issues.

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