2026-03-12 21:01:38

tiddlywiki/library cache pin - find blocking session.txt

@@ -0,0 +1,36 @@
+-- note down SADDR and P1RAW from the following query
+select  s.sid, s.saddr, sw.p1raw
+     from gv$session_wait sw, gv$session s
+     where sw.sid = s.sid and sw.event='library cache pin';
+
+-- use previous SADDR and P1RAW and note down KGLLKUSE
+select b.KGLLKUSE from dba_kgllock w , dba_kgllock b
+     where w.KGLLKHDL  = b.KGLLKHDL
+     and   w.KGLLKREQ  > 0 and b.KGLLKMOD > 0
+     and   w.KGLLKTYPE = b.KGLLKTYPE
+     and   w.KGLLKUSE  = '000000025C47A5F0' -- SADDR
+     and   w.KGLLKHDL  = '000000008AEE0AB8' -- P1RAW
+;
+
+-- use previous KGLLKUSE to find the SID
+select sid from gv$session s
+     where saddr in ('000000025DEC3278');
+
+-- use previous SID to find session detail
+select
+    i.instance_name     instance_name
+  , s.sid               sid
+  , s.serial#           serial_id
+  , s.status            session_status
+  , s.username          oracle_username
+  , s.osuser            os_username
+  , p.spid              os_pid
+  , s.terminal          session_terminal
+  , s.machine           session_machine
+  , s.program           session_program
+from
+             gv$session  s
+  inner join gv$process  p on (s.paddr = p.addr and s.inst_id = p.inst_id)
+  inner join gv$instance i on (p.inst_id = i.inst_id)
+where
+  s.sid in (516);