ORA-600: [ksnpost:ksnigb]

客户10.2.0.5 RAC for HP-UX ia64出现ORA-600(ksnpost:ksnigb)的错误。
错误信息如下：

Wed Apr 25 16:32:21 UTC 2012
Errors IN file /oracle/app/admin/orcl/bdump/orcl2_ora_17014.trc:
ORA-00600: Message 600 NOT found; No message file FOR product=RDBMS, facility=ORA; arguments: [ksnpost:ksnigb]
Wed Apr 25 16:32:55 UTC 2012
Trace dumping IS performing id=[cdmp_20120425163255]
Wed Apr 25 16:32:56 UTC 2012
Errors IN file /oracle/app/admin/orcl/bdump/orcl2_ora_5511.trc:
ORA-12012: 自动执行作业 8938 出错
ORA-12801: 并行查询服务器 ORA-12801: 并行查询服务器 P122, instance orcldb2:orcl2 (2) 中发出错误信号
ORA-00600: Message 600 NOT found; No message file FOR product=RDBMS, facility=ORA; arguments: [ksnpost:ksnigb]
ORA-06512: 在 "SYS.DBMS_STATS", line 21275
中发出错误信号
Wed Apr 25 16:35:41 UTC 2012
Errors IN file /oracle/app/admin/orcl/bdump/orcl2_ora_19966.trc:
ORA-27041: unable TO OPEN file
HPUX-ia64 Error: 23: File TABLE overflow
Additional information: 44
Additional information: 65598
Additional information: 2734688
Wed Apr 25 16:35:41 UTC 2012
Errors IN file /oracle/app/admin/orcl/bdump/orcl2_ora_19966.trc:
ORA-27041: unable TO OPEN file
HPUX-ia64 Error: 23: File TABLE overflow
Additional information: 44
Additional information: 65598
Additional information: 2734688
Wed Apr 25 16:35:41 UTC 2012
Errors IN file /oracle/app/admin/orcl/bdump/orcl2_ora_19966.trc:
ORA-27041: unable TO OPEN file
HPUX-ia64 Error: 23: File TABLE overflow
Additional information: 44
Additional information: 65598
Additional information: 2734688

详细TRACE信息为：

orcldb2>more /oracle/app/admin/orcl/bdump/orcl2_ora_17014.trc
Dump file /oracle/app/admin/orcl/bdump/orcl2_ora_17014.trc
Oracle DATABASE 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
WITH the Partitioning, REAL Application Clusters, OLAP, DATA Mining
AND REAL Application Testing options
ORACLE_HOME = /oracle/app/product/10.2.0/db_1
System name:    HP-UX
Node name:      orcldb2
Release:        B.11.31
Version:        U
Machine:        ia64
Instance name: orcl2
Redo thread mounted BY this instance: 2
Oracle process NUMBER: 0
Unix process pid: 17014, image: oracle@orcldb2
Ioctl ASYNC_CONFIG error, errno = 1
*** SERVICE NAME:(SYS$USERS) 2012-04-25 16:32:21.472
*** SESSION ID:(377.37550) 2012-04-25 16:32:21.472
*** 2012-04-25 16:32:21.472
ksedmp: internal OR fatal error
ORA-00600: Message 600 NOT found; No message file FOR product=RDBMS, facility=ORA; arguments: [ksnpost:ksnigb]
CURRENT SQL statement FOR this SESSION:
SELECT /*+ parallel_index(t,"IDX_PRODUCT_ID",96) dbms_stats cursor_sharing_exact use_weak_name_resl dynamic_sampling(0) no_monitoring no_expand index_ffs(t,"
IDX_PRODUCT_ID") */ COUNT(*) AS nrw,COUNT(DISTINCT sys_op_lbid(82769,'L',t.rowid)) AS nlb,COUNT(DISTINCT "PRODUCT_ID") AS ndk,sys_op_countchg(substrb(t.rowid
,1,15),1) AS clf FROM "ORCL_UNICOM"."MESSAGE_LOG" sample block (   .4377057550,1)  t WHERE ("PRODUCT_ID" IS NOT NULL) AND (TBL$OR$IDX$PART$NUM("ORCL_UNICOM"."M
ESSAGE_LOG",0,4,0,"ROWID") = :objn)
----- Call Stack Trace -----
calling              CALL     entry                argument VALUES IN hex      
location             TYPE     point                (? means dubious VALUE)     
-------------------- -------- -------------------- ----------------------------
40000000040333a0     CALL     4000000004035b60     000000000 ? 000000001 ?
4000000004032b40     CALL     4000000004033360     000000000 ?
                                                   C000000000000D20 ?
                                                   4000000004032B40 ?
                                                   000000000 ? 000000000 ?
                                                   000000000 ?
400000000407abb0     CALL     40000000040322c0     000000003 ?
                                                   9FFFFFFFFFFEFC10 ?
                                                   60000000000BA268 ?
                                                   9FFFFFFFFFFF01E0 ?
                                                   C000000000000999 ?
                                                   400000000407ABB0 ?
40000000098c33d0     CALL     400000000407ab40     9FFFFFFFFFFF0770 ?
                                                   000000003 ?
                                                   9FFFFFFFFFFF01F0 ?
                                                   60000000000BA268 ?
                                                   C000000000000612 ?
                                                   40000000098C33D0 ?
40000000098c41c0     CALL     40000000098c32a0     60000000000318D0 ?
                                                   4000000001ADC4E0 ?
                                                   6000000000032988 ?
                                                   4000000001ADC4E0 ?
                                                   9FFFFFFFFFFF07A0 ?
4000000004030400     CALL     40000000098c4180     60000000000318D0 ?
                                                   9FFFFFFFFD364638 ?
                                                   9FFFFFFFFD364648 ?
                                                   6000000000032D00 ?
                                                   9FFFFFFFFFFF07A0 ?
4000000002071430     CALL     4000000004030350     4000000000F67410 ?
                                                   000000000 ?
                                                   60000000000C6C98 ?
40000000030c7ce0     CALL     40000000020713d0     C000001FF2838160 ?
                                                   60000000000BA268 ?
                                                   C000000000000797 ?
                                                   40000000030C7CE0 ?
                                                   9FFFFFFFFFFF07DC ?
                                                   9FFFFFFFFFFF07E0 ?
                                                   9FFFFFFFFFFF07D0 ?
                                                   000000001 ?
40000000030c8940     CALL     40000000030c7a50     C0000020351ED5A0 ?

查询MOS，发现和问题文档Get Various ORA-600 Error Followed By “HPUX-ia64 Error: 24: Too many open files” [ID 1061351.1]描述得比较接近。虽然文档描述的问题是HPUX-ia64 Error: 24，而当前的错误是HPUX-ia64 Error: 23: File table overflow，但是二者的本质是一样的。
从错误信息上看65598已经超过了设置值65536，针对这个问题，可以通过调整内核参数的方式进行解决，可以参考文档How to Increase the Number of Open Files on HP-UX [ID 1264834.1]。
而对于当前的情况，问题发生在并行执行上，并行度开到96显然过大，将其降至并行度16应该就可以避免该错误。