2026-03-12 20:23:15

tpt/aot/report_sp_chunk_durations.sql

@@ -0,0 +1,26 @@
+prompt
+prompt WARNING!!! This script will query X$KSMSP, which will cause heavy shared pool latch contention
+prompt in systems under load and with large shared pool. This may even completely hang
+prompt your instance until the query has finished! You probably do not want to run this in production!
+prompt
+pause  Press ENTER to continue, CTRL+C to cancel...
+
+COL chunk_comment FOR A20
+BREAK ON ksmchdur SKIP 1 DUPLICATES
+
+SELECT
+    ksmchdur
+  , ksmchcls
+  , SUBSTR(ksmchcom,1,DECODE(INSTR(ksmchcom,'^'),0,99,INSTR(ksmchcom,'^'))) chunk_comment
+  , COUNT(*),MIN(ksmchsiz),MAX(ksmchsiz),SUM(ksmchsiz)
+FROM 
+    x$ksmsp 
+GROUP BY 
+    ksmchdur
+  , ksmchcls
+  , SUBSTR(ksmchcom,1,DECODE(INSTR(ksmchcom,'^'),0,99,INSTR(ksmchcom,'^')))
+ORDER BY
+    ksmchdur
+  , SUM(ksmchsiz) DESC
+/
+