Direct links to fixes
APAR status
Closed as program error.
Error description
You see java/lang/OutOfMemoryError exceptions intermittently while using IBM Business Process Manager (BPM). When you review the associated javacore, you notice that many threads are running the loadSnapshot method: at com/lombardisoftware/server/ejb/persistence/versioning/SnapshotC ontextManager.loadSnapshot (SnapshotContextManager.java:762(Compiled Code)) at com/lombardisoftware/server/ejb/persistence/versioning/SnapshotC ontextManager.acquireSnapshotContext (SnapshotContextManager.java:439(Compiled Code)) When reviewing the IBM BPM trace, you might notice that multiple snapshots are being loaded around the same time: [6/10/16 22:27:43:154 EDT] 000008bd wle_versionin 1 com.lombardisoftware.server.ejb.persistence.versioning.SnapshotC ontextManager loadSnapshot load snapshot Snapshot.e0e7a8cc-dab9-4296-ae20-bca232af1774 [6/10/16 22:27:43:210 EDT] 0000090d wle_versionin 1 com.lombardisoftware.server.ejb.persistence.versioning.SnapshotC ontextManager loadSnapshot load snapshot Snapshot.e0e7a8cc-dab9-4296-ae20-bca232af1774 .----------------------------------------------------------- There may also be WSVR0605W (hung thread) messages observed with this java stack [1/3/17 13:36:17:537 UTC] 00000082 ThreadMonitor W WSVR0605W: Thread "WebContainer : 34" (00000870) has been active for 659662 milliseconds and may be hung. There is/are 1 thread(s) in total in the server that may be hung. at com.ibm.db2.jcc.t4.z.R(z.java:575) at com.ibm.db2.jcc.t4.cb.a(cb.java:159) ... at com.ibm.db2.jcc.t4.c.a(c.java:129) at com.ibm.db2.jcc.am.ResultSet.nextX(ResultSet.java:443) at com.ibm.db2.jcc.am.ResultSet.next(ResultSet.java:371) at com.ibm.ws.rsadapter.jdbc.WSJdbcResultSet.next(WSJdbcResultSet.j ava:3114) at org.springframework.jdbc.core.RowMapperResultSetExtractor.extrac tData(RowMapperResultSetExtractor.java:91) at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStateme nt(JdbcTemplate.java:653) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate. java:591) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.ja va:641) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.ja va:670) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.ja va:678) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.ja va:710) at org.springframework.jdbc.core.simple.SimpleJdbcTemplate.query(Si mpleJdbcTemplate.java:187) at com.lombardisoftware.server.ejb.persistence.versioning.SnapshotC ontextManager.loadSnapshot(SnapshotContextManager.java:691) at com.lombardisoftware.server.ejb.persistence.versioning.SnapshotC ontextManager.acquireSnapshotContext(SnapshotContextManager.java :384) at com.lombardisoftware.server.ejb.persistence.versioning.BranchCon textImpl.readAccess(BranchContextImpl.java:169) at com.lombardisoftware.server.ejb.persistence.versioning.BranchMan ager.readAccess(BranchManager.java:243) at com.lombardisoftware.server.ejb.persistence.PersistenceServicesC ore.findAll(PersistenceServicesCore.java:147) The heapdump shows the following memory usage pattern java.util.ArrayList (11,627 instances) Some of the ArrayLists with highest retained heap around 67 MB: Class Name | Shallow Heap | Retained Heap | Percentage ---------------------------------------------------------------- -------- java.util.ArrayList @ 0x1c3cc34f0 Unknown| 24 | 66,385,352 | 0.53% java.util.ArrayList @ 0x1c3d479b0 Unknown| 24 | 66,385,352 | 0.53% java.util.ArrayList @ 0x1c909fa30 Unknown| 24 | 66,385,352 | 0.53% java.util.ArrayList @ 0x24df2df28 Unknown| 24 | 66,385,352 | 0.53% java.util.ArrayList @ 0x24df68268 Unknown| 24 | 66,385,352 | 0.53% java.util.ArrayList @ 0x24df6b358 Unknown| 24 | 66,385,352 | 0.53% java.util.ArrayList @ 0x24deed100 Unknown| 24 | 65,768,240 | 0.53% ---------------------------------------------------------------- A lot of ArrayLists --------------------------------------------------------------- java.util.ArrayList @ 0x1c3d435a8 Unknown | 24 | 64,184,920 | 0.52% '- java.lang.Object[49816] @ 0x28b3b3e18 | 199,280 | 64,184,896 | 0.52% |- com.lombardisoftware.server.ejb.persistence.versioning.POVersion Summary @ 0x3a805b6b0| 72 | 27,760 | 0.00% |- com.lombardisoftware.server.ejb.persistence.versioning.POVersion Summary @ 0x3a80553f8| 72 | 25,344 | 0.00% |- com.lombardisoftware.server.ejb.persistence.versioning.POVersion Summary @ 0x3a8090f30| 72 | 22,288 | 0.00% |- com.lombardisoftware.server.ejb.persistence.versioning.POVersion Summary @ 0x3a814e788| 72 | 21,536 | 0.00% A large number of POVersion objects on the heap. --------------------------------------------- com.lombardisoftware.server.ejb.persistence.versioning.POVersion Summary| 5,754,545 | 414,327,240 | >= 8,298,224,152 ---------------------------------------------------------------- PRODUCTS AFFECTED IBM BPM Advanced IBM BPM Standard IBM BPM Express
Local fix
Problem summary
No additional information is available.
Problem conclusion
A fix will be included in IBM BPM V8.5.7 cumulative fix 2016.09 that prevents duplicate loading snapshot issues. To determine whether the cumulative fix is available and download it if it is, complete the following steps on Fix Central: 1. On the Select product tab, select WebSphere as the product group, IBM Business Process Manager with your edition from the WebSphere options, All as the installed version, and All as the platform, and then click Continue. 2. In the Text field, enter "cumulative fix", and click Continue.
Temporary fix
Comments
APAR Information
APAR number
JR56099
Reported component name
BPM STANDARD
Reported component ID
5725C9500
Reported release
855
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-06-09
Closed date
2016-08-18
Last modified date
2019-01-31
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
BPM STANDARD
Fixed component ID
5725C9500
Applicable component levels
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSFTDH","label":"IBM Business Process Manager Standard"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"855","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
04 September 2023