2026-03-12 20:23:15

tpt/jf.sql

@@ -0,0 +1,45 @@
+-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
+-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
+
+prompt Display bloom filters used by a PX session from V$SQL_JOIN_FILTER...
+
+SELECT
+    QC_SESSION_ID    qc_sid    
+  , QC_INSTANCE_ID   inst_id 
+  , SQL_PLAN_HASH_VALUE sql_hash_value -- this is sql_hash_value, not plan hash value despite the column name
+  , active
+  , 'BF'||TRIM(TO_CHAR(filter_id, '0999')) f_id
+  , LENGTH * 8     bytes_total --  there seems to be a bug in 12c (or maybe due to bloom folding)
+  , LENGTH * 8 * 8 bits_total
+  , BITS_SET   bits_set
+  , TO_CHAR(ROUND((bits_set/(length*8))*100,1),'99999.0')||' %' pct_set          
+  , FILTERED             
+  , PROBED  
+  , TO_CHAR(ROUND(filtered / NULLIF(probed,0) * 100, 2), '999.0')||' %' rejected
+  , ACTIVE               
+FROM
+    GV$SQL_JOIN_FILTER
+WHERE
+    1=1
+--AND active != 0
+AND qc_session_id LIKE 
+        upper(CASE 
+          WHEN INSTR('&1','@') > 0 THEN 
+              SUBSTR('&1',INSTR('&1','@')+1)
+          ELSE
+              '&1'
+          END
+             ) ESCAPE '\'
+AND qc_instance_id LIKE
+    CASE WHEN INSTR('&1','@') > 0 THEN
+      UPPER(SUBSTR('&1',1,INSTR('&1','@')-1))
+    ELSE
+      USERENV('instance')
+    END ESCAPE '\'
+ORDER BY
+    qc_instance_id
+  , qc_session_id
+  , sql_hash_value
+  , f_id
+/
+