Alert Log Error

Sat Dec  6 06:24:40 2008
Errors in file /usr/app/oracle/admin/posso1p1/udump/posso1p1_ora_643.trc:
ORA-20000: ORA-01013: user requested cancel of current operation
ORA-06512: at "SSO.TTS_UPD_LASTACCESS_BY_ID_NC", line 17
ORA-01013: user requested cancel of current operation
ORA-06512: at line 1
Sat Dec  6 06:30:58 2008
Errors in file /usr/app/oracle/admin/posso1p1/udump/posso1p1_ora_12648.trc:
ORA-20000: ORA-01013: user requested cancel of current operation
ORA-06512: at "SSO.TTS_UPD_LASTACCESS_BY_ID_NC", line 17
ORA-01013: user requested cancel of current operation
ORA-06512: at line 1
Sat Dec  6 06:31:21 2008
Errors in file /usr/app/oracle/admin/posso1p1/udump/posso1p1_ora_22575.trc:
ORA-20000: ORA-01013: user requested cancel of current operation
ORA-06512: at "SSO.TTS_UPD_LASTACCESS_BY_ID_NC", line 17
ORA-01013: user requested cancel of current operation
ORA-06512: at line 1
Sat Dec  6 06:31:37 2008
Errors in file /usr/app/oracle/admin/posso1p1/udump/posso1p1_ora_15208.trc:
ORA-20000: ORA-01013: user requested cancel of current operation
ORA-06512: at "SSO.TTS_UPD_LASTACCESS_BY_ID_NC", line 17
ORA-01013: user requested cancel of current operation
ORA-06512: at line 1
Sat Dec  6 06:31:38 2008
Errors in file /usr/app/oracle/admin/posso1p1/udump/posso1p1_ora_9875.trc:
ORA-20000: ORA-01013: user requested cancel of current operation
ORA-06512: at "SSO.TTS_UPD_LASTACCESS_BY_ID_NC", line 17
ORA-01013: user requested cancel of current operation
ORA-06512: at line 1
Sat Dec  6 06:33:24 2008
Errors in file /usr/app/oracle/admin/posso1p1/udump/posso1p1_ora_29542.trc:
ORA-20000: ORA-01013: user requested cancel of current operation
ORA-06512: at "SSO.TTS_UPD_LASTACCESS_BY_ID_NC", line 17
ORA-01013: user requested cancel of current operation
ORA-06512: at line 1
Sat Dec  6 06:34:07 2008
Errors in file /usr/app/oracle/admin/posso1p1/udump/posso1p1_ora_8981.trc:
ORA-20000: ORA-01013: user requested cancel of current operation
ORA-06512: at "SSO.TTS_UPD_LASTACCESS_BY_ID_NC", line 17
ORA-01013: user requested cancel of current operation
ORA-06512: at line 1
========================================================================
Udump Trace file

Oracle9i Enterprise Edition Release 9.2.0.5.0 - 64bit Production
With the Partitioning and Real Application Clusters options
JServer Release 9.2.0.5.0 - Production
ORACLE_HOME = /usr/app/oracle/product/9.2.0
System name:    SunOS
Node name:      sppwd527
Release:        5.9
Version:        Generic_122300-28
Machine:        sun4u
Instance name: posso1p1
Redo thread mounted by this instance: 1
Oracle process number: 122
Unix process pid: 6390, image: oracle@sppwd527 (TNS V1-V3)

*** 2008-12-06 06:18:28.358
*** SESSION ID:(894.39847) 2008-12-06 06:18:28.343
*** ERROR: INTERNAL: VCSIPC , ipcmain.c:4994, c0x10338e0c8
poll: FAILED, errno 149[Operation already in progress]
VCSIPC   dlpl[ ctx 0x10338e0c8
VCSIPC   dlpl: tout 1250, flg 0, nd 0.0x10338e1a8, ptidp 0x0, rgn 0, req 0x0, doneq 0x0, biq 0x1033d6d28
VCSIPC   dlpl: last LMX rqh in poll struct: NULL
VCSIPC   dlpl: LMX doneq: EMPTY
VCSIPC   dlpl: ctx: biq 0x0, tp 0x0, cnt 0
VCSIPC   dlpl]
KCL: caught error 27510 during lock op
======================================================================