2026-03-12 20:23:15

vg/pga_memory_details.sql

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+@@header
+
+/*
+*
+*  Author    : Vishal Gupta
+*  Purpose   : Display PGA Memory Details
+*  Parameter : 1 - PID (From gv$process.pid )
+*              2 - Instance Number (Defaults to 1)
+*
+*  Reference : Note 822527.1 - How To Find Where The Memory Is Growing For A Process
+*              Note 199746.1 - How to Resolve ORA-4030 Errors on UNIX
+*              
+*
+*  Notes     : To populate v$pga_memory_detail view, execute either of following command
+*                using pid=1 enables/disables this event for all processes.            
+*
+*                - alter session set events 'immediate trace name PGA_DETAIL_GET <pid> ' ;
+*                  or
+*                - ORADEBUG setorapid  <pid>
+*                  ORADEBUG DUMP PGA_DETAIL_GET <pid>
+*
+*              To dump pga memory details to trace file, execute either of the following command
+*                - alter session set events 'immediate trace name PGA_DETAIL_DUMP <pid> ' ;
+*                  or
+*                - ORADEBUG setorapid  <pid>
+*                  ORADEBUG DUMP PGA_DETAIL_DUMP    <pid>
+*
+*              To Cancel or turn off the event
+*                - alter session set events 'immediate trace name PGA_DETAIL_CANCEL <pid> ' ;
+*                  or
+*                - ORADEBUG setorapid  <pid>
+*                  ORADEBUG DUMP PGA_DETAIL_CANCEL <pid>
+*           
+*  Revision History:
+*  ===================
+*  Date       Author        Description
+*  ---------  ------------  -----------------------------------------
+*  27-Jun-12  Vishal Gupta  Created
+*  
+*/
+
+
+/*
+select * from v$process;
+select * from v$process_group;
+select * from v$process_memory where pid = 2; 
+select * from v$process_memory_detail where pid = 23 ;
+select * from v$process_memory_detail_prog;
+select * from dba_hist_process_mem_summary;
+*/
+
+select p.pid
+     , p.name
+     , LPAD ('>',(level  -1 ) * 4,'|---' ) || p.heap_name
+--     , p.heap_descriptor
+--     , p.parent_heap_descriptor
+     , p.bytes
+     , p.category
+     , p.allocation_count
+from gv$process_memory_detail p
+where p.pid like &&PID 
+  AND p.inst_id LIKE &&INST_ID 
+connect by PRIOR heap_descriptor = parent_heap_descriptor
+start with parent_heap_descriptor = '00'
+--ORDER BY level,p.parent_heap_descriptor || '.' || p.heap_descriptor
+;
+