APAR status
Closed as fixed if next.
Error description
Basic HyperSwap sessions have no "hardened freeze" option, but the TPC-R code has a fault whereby it expects these sessions to have such information, therefore causing a NullPointerException. The NullPointerException prevents any previous connections from closing, yet TPC-R tries to create a new one. As often as the NullPointerException occurs, this creates a connection leak until the maximum of 4 is reached in zOS. When this limit is reached, one or more session will transition to Severe state. The NullPointerException appears in the ccwTrace logs as: '''''' 2016-12-20 17:03:51.209-03:00 ZOSSocketConnectionMonitor-2 ERROR: com.ibm.ess.api.client.zos.ip.ZOSSocketConnectionMonitor.run java.lang.NullPointerException at com.ibm.csm.server.session.ZOSHyperswapManager.updateLoadedConfi gOnce(ZOSHyperswapManager.java:293) at com.ibm.csm.server.session.ZOSHyperswapManager.pingAllSessions(Z OSHyperswapManager.java:5387) at com.ibm.ess.api.client.zos.ip.ZOSSocketConnectionMonitor.run(ZOS SocketConnectionMonitor.java:169) '''''' and: ''''' 2016-12-20 17:05:51.214-03:00 ZOSSocketConnectionMonitor-2 INFO: com.ibm.ess.api.client.zos.ip.ZOSSocketConnectionMonitor.run: Connecting to: <LPAR> on port: 5858, encryption:true 2016-12-20 17:05:51.216-03:00 ZOSSocketConnectionMonitor-2 INFO: java.lang.String.getProperty: looking up prop file 2016-12-20 17:05:51.217-03:00 ZOSSocketConnectionMonitor-2 INFO: java.lang.String.getProperty: attempting to find prop file through getResourceAsStream 2016-12-20 17:05:51.223-03:00 ZOSSocketConnectionMonitor-2 INFO: com.ibm.ess.api.client.zos.ip.ZOSSocketConnection.connect: <<LPAR>:5858>creating socket to <LPAR> on port 5858 with encryption true '''''
Local fix
manually kill TCP/IP connections until sessions stabilize
Problem summary
**************************************************************** * USERS AFFECTED: * * IBM Spectrum Control 5.2.x Replication users * **************************************************************** * PROBLEM DESCRIPTION: * * Basic HyperSwap sessions have no "hardened freeze" option, * * but * * the TPC-R code has a fault whereby it expects these sessions * * to * * have such information, therefore causing a * * NullPointerException. * * The NullPointerException prevents any previous connections * * from * * closing, yet TPC-R tries to create a new one. * * As often as the NullPointerException occurs, this creates a * * connection leak until the maximum of 4 is reached in zOS. * * When this limit is reached, one or more session will * * transition * * to Severe state. * **************************************************************** * RECOMMENDATION: * * Recommend upgrading the Replication product to: * * IBM Copy Services Manager. * * * * IBM Spectrum Control 5.2.x users who desire to use the * * Replication * * product functionality should upgrade to IBM Copy Services * * Manager. * * * * IBM Copy Services Manager is available with every IBM * * Spectrum * * Control V5.2.8 or later license. * ****************************************************************
Problem conclusion
Temporary fix
Comments
APAR Information
APAR number
IT22416
Reported component name
TPC
Reported component ID
5608TPC00
Reported release
52B
Status
CLOSED FIN
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-09-15
Closed date
2018-04-17
Last modified date
2018-04-17
APAR is sysrouted FROM one or more of the following:
PI75065
APAR is sysrouted TO one or more of the following:
Fix information
Applicable component levels
[{"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSNE44","label":"Tivoli Storage Productivity Center"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"52B"}]
Document Information
Modified date:
24 June 2022