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Jun 13 2008, 5:21 AM EDT
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Change: 1 CURSOR 1211552 SELECT * FROM "MGR"."V_AM" 2 CURSOR 1211528 SELECT * FROM "VACM" 1 INDEX 12662 WRH$_SQLSTAT_INDEX 2 INDEX 12367 WRH$_INST_CACHE_TRANSFER_PK 1 INVALID NAMESPACE 36557 ALERT_QUE 2 INVALID NAMESPACE 10583 CURRENT_OPEN_WINDOW 1 PUB_SUB 3900 DATABASE 2 PUB_SUB 2231 CM_MOT_ADMIN 1 RSRC CONSUMER GROUP 4994422 XDLDSgWaQWxA/gQFs91uYj2A== 2 RSRC
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Apr 25 2008, 10:10 AM EDT
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Change: 445912 ACCTMGMT445912MGMT 1 CLUSTER 2794 C_OBJ#_INTCOL# 2 CLUSTER 1684 SMON_SCN_TO_TIME 1 CURSOR 1211552 SELECT * FROM "ACCTMGR"."V_ACM""MGR"."V_AM" 2 CURSOR 1211528 SELECT * FROM "V_ACM""VACM" 1 INDEX 12662 WRH$_SQLSTAT_INDEX 2 INDEX 12367 WRH$_INST_CACHE_TRANSFER_PK 1 INVALID NAMESPACE 36557 ALERT_QUE 2 INVALID NAMESPACE 10583 CURRENT_OPEN_WINDOW 1 PUB_SUB 3900 DATABASE
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Apr 18 2008, 3:18 AM EDT
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Change: 1 SUMMARY 48387 FREETIMELIST2 SUMMARY 9468"SYS"."ALERT_QUE":"BEDB02_TRUEIN_3872_BE PPMEDIACHARGE1 TABLE/PROCEDURE 499828978251 STANDARDACM 2 TABLE/PROCEDURE 286399501561 DBMS_RCVMANCONCURRENT 1 TRIGGER 548162883 EXPFIL_RESTRICT_TYPEEVOLVEACM_INS_TRI 2 TRIGGER 512060067 SDO_TOPO_DROP_FTBLACM_UPD_TRIMemory Heaps One of the popular misconceptions is that we
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Apr 18 2008, 3:14 AM EDT
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Change: 27946152 7239 2311 0 31.9242989JAVA DATA 51220675002 46151 04369 0 071.029101SQL AREA 291988449627459674 109576659140453 332501238610 293504175744 .355887865.687777728TABLE/PROCEDURE 122602350265612275 13522486391 6001537095 0 44.381914542.9385005TRIGGER 451762483898 749316 434232 0 57.943925273.4177215Although
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Mar 10 2008, 7:50 PM EDT
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Change: of the Shared COMPONENTSPoolGenerally what is of far greater interest to the DBA, are the allocation of memory that can be aged in and out of
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Mar 10 2008, 7:43 PM EDT
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Change: Renamed from Understanding Shared Pool Memory Structures by Mar 10 2008, 7:43 PM EDT for: Concepts--Placing under Database
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Mar 10 2008, 7:40 PM EDT
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Change: Moved by Mar 10 2008, 7:40 PM EDT
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Nov 26 2007, 12:08 AM EST
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Change: There were only format changes (bold, italics, etc.) in this version. See this version for details.
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Oct 25 2007, 5:39 AM EDT
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Change: <pre>SELECT * FROM(SELECT NAME, BYTES/(1024*1024) MBFROM V$SGASTATWHERE POOL = 'shared pool'ORDER BY BYTES DESC)WHERE ROWNUM <= 10;NAME MB-------------------------- ----------free memory 3704.85709CCursor 221.010124kglsim object batch 82.8534851sql area 66.6449738kglsim heap 58.8817749gcs resources 53.3394012Cursor Stats 49.4467545PCursor 33.8289948
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Oct 25 2007, 5:38 AM EDT
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Change: <pre>SELECT * FROM(SELECT NAME, BYTES/(1024*1024) MBFROM V$SGASTATWHERE POOL = 'shared pool'ORDER BY BYTES DESC)WHERE ROWNUM <= 10;NAME MB-------------------------- ----------free memory 3704.85709CCursor 221.010124kglsim object batch 82.8534851sql area 66.6449738kglsim heap 58.8817749gcs resources 53.3394012Cursor Stats 49.4467545PCursor 33.8289948
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Oct 25 2007, 3:55 AM EDT
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Change: amountamong large numbers of users. DBAs often spent much time learning about the shared pool memorymanagement and configure and tune shared pool usage.The Automatic Shared Memory Management (ASMM) features introduced in 10GR1 solved this problemby providing the DBA a simple,
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Oct 24 2007, 4:38 AM EDT
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Change: procedure sprocedures is likely to consume more space in the shared pool than a simple select statement. The size and other details of individual objects in the shared pool cab be obtained by querying the fixed view V$DB_OBJECT_CACHE (or related views such as V$SQL and V$SQLAREA) The query
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Oct 22 2007, 12:13 PM EDT
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Change: 583 583dc_segments 39302115 51473 988 988dc_sequences 62614 22858 5 5dc_table_scns 7998266 1693264 10 10dc_tablespace_quotas 33651 642 3 3dc_tablespaces 88891887 130 103 103dc_usernames 20403560 638 25 25dc_users 256103233 1805 119 119global database name 98 24 0 0outstanding_alerts 811217 790511 199 199 ...
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Oct 22 2007, 12:08 PM EDT
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Change: 157563 9360 9360 158501 10636 10636dc_histogram_defs 8616550986243972 218908221565 22033336 2203 3336dc_object_grants 2371016023728481 27852787 138140 138 140dc_object_ids 364464271364815268 47043 763 763 47557 1066 1066dc_objects 3985267139894352 63030 927 927 63515 1166 1166dc_profiles 35838633588166 21 2 2 dc_rollback_segments 52708180
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Oct 22 2007, 11:57 AM EDT
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Change: All SQL cursors and PL/SQL packages a re allocated almost totally in 4K chunks. The bigger the cursor, the more 4K chunks we allocate to
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Oct 22 2007, 9:39 AM EDT
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Change: Shared pool cache dynamics of object creation Object level view At this, it should be fairly obvious that each component has many hundreds of objects in the shared pool. where an object can be for example, a cursor, a table, a view or a PL/SQL package. Usually these
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Oct 22 2007, 9:35 AM EDT
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Change: Usually these individual objects are not large, but they can grow to be several MB based on the object type and its defining attributes. Not surprisingly, a package body containing many procedure s is likely to consume more space in the shared pool than a simple select statement. The
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Oct 22 2007, 9:08 AM EDT
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Change: The fluctuations in the size of all of these components, is driven by the process of building new SQL san PL/SQL objects within the cache,
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Oct 22 2007, 9:02 AM EDT
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Change: Created by Oct 22 2007, 9:02 AM EDT for: no reason given
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