dump 分支块

dump 分支块:

header address 140329769740876=0x7fa11213aa4c
kdxcolev 2
KDXCOLEV Flags = - - -
kdxcolok 0
kdxcoopc 0x80: opcode=0: iot flags=--- is converted=Y
kdxconco 2
kdxcosdc 1
kdxconro 7
kdxcofbo 42=0x2a
kdxcofeo 7989=0x1f35
kdxcoavs 7947
kdxbrlmc 16983209=0x10324a9
kdxbrsno 4
kdxbrbksz 8056
kdxbr2urrc 0
row#0[8009] dba: 16994288=0x1034ff0

其中的kdxcolev表示索引层级号，这里由于我们转储的是根节点，所以其层级号为2。

branch: 0x103161b 16979483 (0: nrow: 8, level: 2)	
	  
row#0[8009] dba: 16994288=0x1034ff0
col 0; len 4; (4):  c3 06 2f 36
col 1; TERM
row#1[8029] dba: 16990264=0x1034038
col 0; len 3; (3):  c3 06 5a
col 1; TERM
row#2[7999] dba: 16994256=0x1034fd0
col 0; len 4; (4):  c3 07 23 21
col 1; TERM
row#3[8047] dba: 16983213=0x10324ad
col 0; len 3; (3):  c3 07 4f
col 1; TERM
row#4[7989] dba: 16995386=0x103543a
col 0; len 4; (4):  c3 08 1d 0c
col 1; TERM
row#5[8038] dba: 16987041=0x10333a1
col 0; len 3; (3):  c3 08 4f
col 1; TERM
row#6[8019] dba: 16992010=0x103470a
col 0; len 4; (4):  c3 09 1f 46
col 1; TERM
----- end of branch block dump -----
End dump data blocks tsn: 4 file#: 4 minblk 202267 maxblk 202267


接下来，我们从根节点中随便找一个分支节点

row#0[8009] dba: 16994288=0x1034ff0
col 0; len 4; (4):  c3 06 2f 36
col 1; TERM

select dbms_utility.data_block_address_file(16994288), dbms_utility.data_block_address_block(16994288) from dual;

SQL> select dbms_utility.data_block_address_file(16994288), dbms_utility.data_block_address_block(16994288) from dual;

DBMS_UTILITY.DATA_BLOCK_ADDRESS_FILE(16994288) DBMS_UTILITY.DATA_BLOCK_ADDRESS_BLOCK(16994288)
---------------------------------------------- -----------------------------------------------
					     4						217072
						 

对其运用前面所介绍过的dbms_utility里的存储过程获得其文件号和数据块号，并对该数据块进行转储，其内容如下所示。可以

SQL> alter system dump datafile 4 block 217072;

select value from v$diag_info where name='Default Trace File';


Branch block dump
=================
header address 140436935371340=0x7fba05a56a4c
kdxcolev 1
KDXCOLEV Flags = - - -
kdxcolok 1
kdxcoopc 0x81: opcode=1: iot flags=--- is converted=Y
kdxconco 2
kdxcosdc 1
kdxconro 378
kdxcofbo 784=0x310
kdxcofeo 3713=0xe81
kdxcoavs 2929
kdxbrlmc 16982257=0x10320f1
kdxbrsno 310
kdxbrbksz 8056 
kdxbr2urrc 4
row#0[4835] dba: 16990452=0x10340f4
col 0; len 4; (4):  c3 06 2f 45  ---54689
col 1; len 3; (3):  01 03 31
row#1[4640] dba: 16995572=0x10354f4 
col 0; len 4; (4):  c3 06 2f 4d   --54676
col 1; len 3; (3):  01 03 2b
row#2[4848] dba: 16984999=0x1032ba7
col 0; len 4; (4):  c3 06 2f 55
col 1; TERM
row#3[4858] dba: 16990413=0x10340cd
col 0; len 4; (4):  c3 06 2f 64
col 1; len 3; (3):  01 03 31
row#4[3726] dba: 17000201=0x1036709
col 0; len 4; (4):  c3 06 30 08
col 1; len 3; (3):  01 03 31
row#5[4871] dba: 16979575=0x1031677
col 0; len 4; (4):  c3 06 30 10
col 1; TERM
row#6[4881] dba: 16990417=0x10340d1
col 0; len 4; (4):  c3 06 30 1f
col 1; len 3; (3):  01 03 31
row#7[3778] dba: 16999945=0x1036609
col 0; len 4; (4):  c3 06 30 27
col 1; len 3; (3):  01 03 2b
row#8[4894] dba: 16984778=0x1032aca
col 0; len 4; (4):  c3 06 30 2f
col 1; TERM