【案例】ora4031
http://blog.itpub.net/23135684/viewspace-1203447/
Mon Sep 11 08:56:10 2017
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_o000_39574.trc (incident=24529):
ORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2543","kglseshtTable")
Incident details in: /oracle/db/diag/rdbms/orcl/orcl1/incident/incdir_24529/orcl1_o000_39574_i24529.trc
Mon Sep 11 08:56:11 2017
Dumping diagnostic data in directory=[cdmp_20170911085611], requested by (instance=1, osid=39574 (O000)), summary=[incident=24529].
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Mon Sep 11 08:56:11 2017
Thread 1 advanced to log sequence 3235 (LGWR switch)
Current log# 1 seq# 3235 mem# 0: +DATA03/orcl/onlinelog/group_1.275.932424707
Current log# 1 seq# 3235 mem# 1: +FR03/orcl/onlinelog/group_1.1125.932424707
Mon Sep 11 08:56:12 2017
Sweep [inc][24529]: completed
Sweep [inc2][24529]: completed
Mon Sep 11 08:56:12 2017
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_arc2_107446.trc (incident=24457):
ORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2605","kglseshtTable")
Incident details in: /oracle/db/diag/rdbms/orcl/orcl1/incident/incdir_24457/orcl1_arc2_107446_i24457.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
WARNING: ASM communication error: op 0 state 0x0 (15055)
ERROR: direct connection failure with ASM
Dumping diagnostic data in directory=[cdmp_20170911085613], requested by (instance=1, osid=107446 (ARC2)), summary=[incident=24457].
Mon Sep 11 08:56:16 2017
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_o000_39601.trc (incident=24530):
ORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2543","kglseshtTable")
Incident details in: /oracle/db/diag/rdbms/orcl/orcl1/incident/incdir_24530/orcl1_o000_39601_i24530.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Dumping diagnostic data in directory=[cdmp_20170911085617], requested by (instance=1, osid=39601 (O000)), summary=[incident=24530].
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_arc2_107446.trc (incident=24458):
ORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2605","kglseshtTable")
ORA-15055: SM ʵORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2605","kglseshtTable")
Incident details in: /oracle/db/diag/rdbms/orcl/orcl1/incident/incdir_24458/orcl1_arc2_107446_i24458.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
WARNING: ASM communication error: op 0 state 0x0 (15055)
ERROR: direct connection failure with ASM
NOTE: Deferred communication with ASM instance
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_arc2_107446.trc:
ORA-15055: SM ʵORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2605","kglseshtTable")
ORA-15055: SM ʵORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2605","kglseshtTable")
NOTE: deferred map free for map id 8074
Dumping diagnostic data in directory=[cdmp_20170911085619], requested by (instance=1, osid=107446 (ARC2)), summary=[incident=24458].
Mon Sep 11 08:56:23 2017
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_arc3_107448.trc (incident=24465):
ORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2543","kglseshtTable")
Incident details in: /oracle/db/diag/rdbms/orcl/orcl1/incident/incdir_24465/orcl1_arc3_107448_i24465.trc
Mon Sep 11 08:56:23 2017
Dumping diagnostic data in directory=[cdmp_20170911085623], requested by (instance=1, osid=107448 (ARC3)), summary=[incident=24465].
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
WARNING: ASM communication error: op 0 state 0x0 (15055)
ERROR: direct connection failure with ASM
Mon Sep 11 08:56:24 2017
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_arc2_107446.trc (incident=24459):
ORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2605","kglseshtTable")
ORA-00312: 2 1: '+DATA03/orcl/onlinelog/group_2.276.932424709'
ORA-17503: ksfdopn: 2 δDATA03/orcl/onlinelog/group_2.276.932424709
ORA-15055: SM ʵORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2605","kglseshtTable")
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
WARNING: ASM communication error: op 0 state 0x0 (15055)
ERROR: direct connection failure with ASM
Mon Sep 11 08:56:28 2017
WARNING: ASM communication error: op 17 state 0x40 (4031)
ERROR: slave communication error with ASM
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_arc0_107442.trc (incident=24441):
ORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2667","kglseshtTable")
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_arc3_107448.trc (incident=24466):
ORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2543","kglseshtTable")
ORA-15055: SM ʵORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2543","kglseshtTable")
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
WARNING: ASM communication error: op 0 state 0x0 (15055)
ERROR: direct connection failure with ASM
NOTE: Deferred communication with ASM instance
Errors in file /oracle/db/diag/rdbms/orcl/orcl1/trace/orcl1_arc3_107448.trc:
ORA-15055: SM ʵORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2543","kglseshtTable")
ORA-15055: SM ʵORA-04031: unable to allocate 12312 bytes of shared memory ("shared pool","unknown object","KKSSP^2543","kglseshtTable")
NOTE: deferred map free for map id 8075
根据Oracle的推荐，在11g中使用MEMORY_TARGET参数的话，那么MEMORY_TARGET至少应该分配256M以上，而且随着DISK GROUP的容量的增长，SHARED_POOL所需要的空间也随着增加。因此对于磁盘组空间比较大的ASM实例而言，采用默认参数作为MEMORY_TARGET显然是不够的。
对于当前环境，只需要简单的调整ASM实例的MEMORY_TARGET参数，将其扩大到500M以上，就可以避免该错误的产生。
