原文链接： https://www.modb.pro/db/23449?xy
在 Oracle 12.2 中，因为在线的分区合并、维护等工作导致了一个BUG的引入。
错误是 ORA-600 错误体现出来的，错误信息类似如下：
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ORA-00600: internal error code, arguments: [kkpofpcd3], [], [], [], [], [], [], [], [], [], [], []引发错误的SQL类似如下：
----- Current SQL Statement for this session (sql_id=c3zymn7x3k6wy) -----
select obj#, dataobj#, part#, hiboundlen, hiboundval, flags, ts#, file#, block#, pctfree$, initrans, maxtrans, analyzetime, samplesize, rowcnt, blevel, leafcnt, distkey, lblkkey, dblkkey, clufac, pctthres$, length(bhiboundval), bhiboundval from indpart$ where bo# = :1 order by part#
[TOC00005]关键的错误信息如下，核心是 Fetch Partnum DictNum 这部分：
========= Dump for incident 216417 (ORA 600 [kkpofpcd3]) ========
[TOC00003]
----- Beginning of Customized Incident Dump(s) -----
fetched: partnum=0, dictnum=98, objn=63117
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_266
objn_kkpacfrag = 63117
objd_kkpacfrag = 63117
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00000000
fragnum_kkpacfrag = 0
dictnum_kkpacfrag = 98
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 0
hibnd_kkpacfrag = "MAXVALUE, MAXVALUE"
bhibnd_kkpacfrag : len=0, key=
kkpodDumpOcd begin: hd=0
ocd=7000101de49eba0
parttype_kkpacocd = 1
subptype_kkpacocd = 0
partcnt_kkpacocd = 10
flags_kkpacocd = 0x3
mflags_kkpacocd = 0x0
status_kkpacocd = 0x0
hidPartcnt_kkpacocd = 0
hasSageTsn_kkpacocd = 0
hasExadoopTsn_kkpaco = 0
noDMOffload_kkpacocd = 0
noDIDTSOffload_kkpac = 0
noXMLOffload_kkpacoc = 0
noJSONOffload_kkpaco = 0
noVGBYOffload_kkpaco = 0
partKCols_kkpacocd:
colCnt=2
[0] id=2, knl=2, dty=2, usr=2, csid=0, csform=0
[1] id=1, knl=1, dty=2, usr=1, csid=0, csform=0
pcd=7000101de49f080, partnum=1, dictnum=10, objn=62637
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_0
objn_kkpacfrag = 62637
objd_kkpacfrag = 62637
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c17b12
fragnum_kkpacfrag = 1
dictnum_kkpacfrag = 10
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, 30"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
pcd=7000101de49f218, partnum=2, dictnum=11, objn=62900
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_30
objn_kkpacfrag = 62900
objd_kkpacfrag = 62900
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c2489a
fragnum_kkpacfrag = 2
dictnum_kkpacfrag = 11
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, 76"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
pcd=7000101de49f3b0, partnum=3, dictnum=13, objn=62901
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_76
objn_kkpacfrag = 62901
objd_kkpacfrag = 62901
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c248a2
fragnum_kkpacfrag = 3
dictnum_kkpacfrag = 13
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, MAXVALUE"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
pcd=7000101de49f550, partnum=4, dictnum=22, objn=63066
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_MXDB_MXSN
objn_kkpacfrag = 63066
objd_kkpacfrag = 63066
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c2806a
fragnum_kkpacfrag = 4
dictnum_kkpacfrag = 22
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, 122"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
pcd=7000101de49f6e8, partnum=5, dictnum=33, objn=63076
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_122
objn_kkpacfrag = 63076
objd_kkpacfrag = 63076
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c2807a
fragnum_kkpacfrag = 5
dictnum_kkpacfrag = 33
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, 146"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
pcd=7000101de49f880, partnum=6, dictnum=44, objn=63080
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_146
objn_kkpacfrag = 63080
objd_kkpacfrag = 63080
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c2870a
fragnum_kkpacfrag = 6
dictnum_kkpacfrag = 44
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, 170"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
pcd=7000101de4a1468, partnum=7, dictnum=55, objn=63084
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_170
objn_kkpacfrag = 63084
objd_kkpacfrag = 63084
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c2871a
fragnum_kkpacfrag = 7
dictnum_kkpacfrag = 55
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, 194"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
pcd=7000101de4a1600, partnum=8, dictnum=66, objn=63088
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_194
objn_kkpacfrag = 63088
objd_kkpacfrag = 63088
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c295ba
fragnum_kkpacfrag = 8
dictnum_kkpacfrag = 66
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, 218"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
pcd=7000101de4a1798, partnum=9, dictnum=77, objn=63112
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_218
objn_kkpacfrag = 63112
objd_kkpacfrag = 63112
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c299a2
fragnum_kkpacfrag = 9
dictnum_kkpacfrag = 77
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, 242"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
pcd=7000101de4a1930, partnum=10, dictnum=88, objn=63116
Owner = 0
Name = WRH$_FILESTATXS_PK
SubName = WRH$_FILESTATXS_1263135530_242
objn_kkpacfrag = 63116
objd_kkpacfrag = 63116
tsn_kkpacfrag = 1
dba_kkpacfrag = 0x00c299c2
fragnum_kkpacfrag = 10
dictnum_kkpacfrag = 88
status_kkpacfrag = 0x0
flags_kkpacfrag = 0x0
fragtype_kkpacfrag = 1
hibnd_kkpacfrag = "1263135530, 266"
bhibnd_kkpacfrag : len=0, key=
subpcnt_kkpacpcd = 0
status_kkpacpcd = 0
kkpodDumpOcd end: hd=0这个问题对应的 BUG是：
Bug 25583657 ALTER TABLE MERGE PARTITIONS ONLINE MAY FAIL WITH ORA-600: [KKPOFPCD3]
这个 BUG 在 18.1 中被修正，官方的描述如下：
Description
This bug is only relevant when using Partitioned Tables
Brief Description:
If you get ORA-600: [KKPOFPCD3] while doing merge partition online,
then its likely that you have hit this bug.
Rediscovery Notes
If you get ORA-600: [KKPOFPCD3] while doing merge partition online,
then its likely that you have hit this bug.
Workaround
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原文链接：http://blog.itpub.net/31556440/viewspace-2684319/
