iBatis 2.2 SQLMAP heap dump websphere 6.0 AIX , DB2 V8 zOS
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Key: IBATIS-477
URL: https://issues.apache.org/jira/browse/IBATIS-477
Project: iBatis for Java
Issue Type: Bug
Components: SQL Maps
Affects Versions: 2.2.0
Environment: iBatis 2.2 AIX 5.x Websphere 6.0 , IBM DB2 V8 zOS , JDBC
Reporter: Jerry Sun
Priority: Critical
We have heap dump happens and track down to iBatis SQLMap. Please see
following. Any help will be appreciate. Thanks !
Maximum heap was set to 1024m and almost 1000mb of heap is in use.
Anlaysis of the heapdump shows the com/ibatis/sqlmap/engine/*
code occupying most of heap(Nearly 900mb).
********************
402,544,512 (45%) [8,208] 573 array of
java/lang/ThreadLocal$ThreadLocalMap$Entry 0x70000000cf85290
3,812,624 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x700000016051ca0
3,761,584 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x7000000308d4048
3,761,584 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000002a51fb30
3,761,536 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000003ff49b38
3,761,472 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000003fbea490
3,761,456 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000002663c540
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x700000023a3f510
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000001f850c20
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000002c798748
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000002beb8b08
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000000d431208
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x700000035b745f8
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000001ce4ae18
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000003623f1f0
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x700000022339948
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000001bffe348
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000001bcf6960
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x70000003e6e9058
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x7000000223b3130
3,761,240 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x700000007d7a088
There are 553 more children
Expansion of each of the object shows the com/ibatis/sqlmap/engine/*
code
3,812,624 (0%) [48] 3 java/lang/ThreadLocal$ThreadLocalMap$Entry
0x700000016051ca0
3,812,560 (0%) [32] 1 java/util/ArrayList 0x700000016051c78
3,812,528 (0%) [96] 1 array of java/lang/Object 0x700000016051c08
3,812,432 (0%) [64] 5 com/ibatis/dao/engine/impl/DaoContext
0x7000000105fb018
3,792,120 (0%) [24] 1
com/ibatis/dao/engine/transaction/sqlmap/SqlMapDaoTransactionManager
0x7000000105fa258
3,792,096 (0%) [32] 2
com/ibatis/sqlmap/engine/impl/SqlMapClientImpl 0x7000000109ebaa8
3,792,064 (0%) [128] 10
com/ibatis/sqlmap/engine/impl/SqlMapExecutorDelegate 0x700000010714088
3,237,584 (0%) [64] 1 java/util/HashMap 0x700000010714038
3,237,520 (0%) [8,208] 492 array of java/util/HashMap$Entry
0x700000013cbaf98
31,464 (0%) [40] 3 java/util/HashMap$Entry 0x7000000151c1128
28,144 (0%) [40] 3 java/util/HashMap$Entry 0x700000013edc5c8
3,208 (0%) [128] 8
com/ibatis/sqlmap/engine/mapping/statement/InsertStatement
0x7000000151b8010
2,584 (0%) [72] 7
com/ibatis/sqlmap/engine/mapping/parameter/BasicParameterMap
0x7000000151b7558
1,112 (0%) [48] 4 array of
com/ibatis/sqlmap/engine/mapping/parameter/BasicParameterMapping
0x7000000151c14b8
272 (0%) [104] 4
com/ibatis/sqlmap/engine/mapping/parameter/BasicParameterMapping
0x7000000151c1880
168 (0%) [32] 1 java/lang/String 0x7000000151c1850
136 (0%) [136] 0 char[] 0x7000000151c17c0
48 (0%) [32] 1 java/lang/String 0x700000005488f60
32 (0%) [32] 1 java/lang/String 0x7000000151c18f8
16 (0%) [16] 0
com/ibatis/sqlmap/engine/type/StringTypeHandler 0x7000000108c3700
272 (0%) [104] 4
com/ibatis/sqlmap/engine/mapping/parameter/BasicParameterMapping
0x7000000151c1718
264 (0%) [104] 4
com/ibatis/sqlmap/engine/mapping/parameter/BasicParameterMapping
0x7000000151b72c0
256 (0%) [104] 4
com/ibatis/sqlmap/engine/mapping/parameter/BasicParameterMapping
0x7000000151c19d8
936 (0%) [64] 1 java/util/HashMap 0x7000000151b7508
352 (0%) [48] 3
com/ibatis/sqlmap/engine/exchange/JavaBeanDataExchange 0x7000000151c1320
112 (0%) [32] 1 java/lang/String 0x7000000151b73d8
3,792,064 (0%) [128] 10
com/ibatis/sqlmap/engine/impl/SqlMapExecutorDelegate 0x700000010714088
304 (0%) [304] 0 class
com/obus/admin/policyLinks/data/ServicesDTO 0x7000000151bdcc8
160 (0%) [32] 1 java/lang/String 0x700000010bcb0d8
352 (0%) [24] 1
com/ibatis/sqlmap/engine/mapping/sql/stat/StaticSql 0x7000000151c1160
128 (0%) [32] 1 java/util/ArrayList 0x7000000151b7fc8
16 (0%) [16] 0 array of
com/ibatis/sqlmap/engine/mapping/result/ResultMap 0x7000000151b7ff0
*****************************************
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