转载biti的一篇文章
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.
Total System Global Area 131142648 bytes
Fixed Size 451576 bytes
Variable Size 104857600 bytes
Database Buffers 25165824 bytes
Redo Buffers 667648 bytes
Database mounted.
SQL> alter session set sql_trace = true;
Session altered.
SQL> alter database open;
Database altered.
SQL>
首先我们来参考跟踪文件的前部分(参考文章最后附件)
create table bootstrap$ ( line# number not null, obj#
number not null, sql_text varchar2(4000) not null) storage (initial
50K objno 56 extents (file 1 block 377))
这是第一个对象的创建，在这一步中，实际上oracle是在内存中创建bootstrap$的结构，然后从数据文件的file 1 block 377读取数据到内存中，完成第一次初始化。
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可以从数据库中查询一下，file 1 block 377上存储的是什么对象：
SQL>select segment_name,file_id,block_id from dba_extents where block_id=377;
SEGMENT_NAME FILE_ID BLOCK_ID
BOOTSTRAP$ 1 377
File 1 block 377 开始存放的正是bootstrap$对象。
接下来我们来看执行的是
select line#, sql_text from bootstrap$ where obj# != :1
(这里实际上是逐步提取内容建立字典表本身的结构,根据后面内容可知)
那么在这里我们在数据库中来看看 bootstap$
SQL> desc bootstrap$
Name Null? Type
----------------------------------------- -------- ----------------------------
LINE# NOT NULL NUMBER
OBJ# NOT NULL NUMBER
SQL_TEXT NOT NULL VARCHAR2(4000)
SQL> select count(*) from bootstrap$;
57
看看这张表的内容：
SQL> select obj#,sql_text from bootstrap$ where rownum<11;
-1
8.0.0.0.0
0
CREATE ROLLBACK SEGMENT SYSTEM STORAGE ( INITIAL 112K NEXT 1024K MINEXTENTS 1 M
AXEXTENTS 32765 OBJNO 0 EXTENTS (FILE 1 BLOCK 9))
8
CREATE CLUSTER C_FILE#_BLOCK#("TS#" NUMBER,"SEGFILE#" NUMBER,"SEGBLOCK#" NUMBER)
PCTFREE 10 PCTUSED 40 INITRANS 2 MAXTRANS 255 STORAGE ( INITIAL 24K NEXT 1024K
MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 OBJNO 8 EXTENTS (FILE 1 BLOCK
73)) SIZE 225
9
CREATE INDEX I_FILE#_BLOCK# ON CLUSTER C_FILE#_BLOCK# PCTFREE 10 INITRANS 2 MAXT
RANS 255 STORAGE ( INITIAL 64K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645 PC
TINCREASE 0 OBJNO 9 EXTENTS (FILE 1 BLOCK 81))
14
CREATE TABLE SEG$("FILE#" NUMBER NOT NULL,"BLOCK#" NUMBER NOT NULL,"TYPE#" NUMBE
R NOT NULL,"TS#" NUMBER NOT NULL,"BLOCKS" NUMBER NOT NULL,"EXTENTS" NUMBER NOT N
ULL,"INIEXTS" NUMBER NOT NULL,"MINEXTS" NUMBER NOT NULL,"MAXEXTS" NUMBER NOT NUL
L,"EXTSIZE" NUMBER NOT NULL,"EXTPCT" NUMBER NOT NULL,"USER#" NUMBER NOT NULL,"LI
STS" NUMBER,"GROUPS" NUMBER,"BITMAPRANGES" NUMBER NOT NULL,"CACHEHINT" NUMBER NO
T NULL,"SCANHINT" NUMBER NOT NULL,"HWMINCR" NUMBER NOT NULL,"SPARE1" NUMBER,"SPA
RE2" NUMBER) STORAGE ( OBJNO 14 TABNO 2) CLUSTER C_FILE#_BLOCK#(TS#,FILE#,BLOCK
#)
5
CREATE TABLE CLU$("OBJ#" NUMBER NOT NULL,"DATAOBJ#" NUMBER,"TS#" NUMBER NOT NULL
,"FILE#" NUMBER NOT NULL,"BLOCK#" NUMBER NOT NULL,"COLS" NUMBER NOT NULL,"PCTFRE
E$" NUMBER NOT NULL,"PCTUSED$" NUMBER NOT NULL,"INITRANS" NUMBER NOT NULL,"MAXTR
ANS" NUMBER NOT NULL,"SIZE$" NUMBER,"HASHFUNC" VARCHAR2(30),"HASHKEYS" NUMBER,"F
UNC" NUMBER,"EXTIND" NUMBER,"FLAGS" NUMBER,"DEGREE" NUMBER,"INSTANCES" NUMBER,"A
VGCHN" NUMBER,"SPARE1" NUMBER,"SPARE2" NUMBER,"SPARE3" NUMBER,"SPARE4" NUMBER,"S
PARE5" VARCHAR2(1000),"SPARE6" VARCHAR2(1000),"SPARE7" DATE) STORAGE ( OBJNO 5
TABNO 2) CLUSTER C_OBJ#(OBJ#)
6
CREATE CLUSTER C_TS#("TS#" NUMBER) PCTFREE 10 PCTUSED 40 INITRANS 2 MAXTRANS 255
STORAGE ( INITIAL 64K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREAS
E 0 OBJNO 6 EXTENTS (FILE 1 BLOCK 57))
7
CREATE INDEX I_TS# ON CLUSTER C_TS# PCTFREE 10 INITRANS 2 MAXTRANS 255 STORAGE (
INITIAL 64K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 OBJNO
7 EXTENTS (FILE 1 BLOCK 65))
18
CREATE TABLE OBJ$("OBJ#" NUMBER NOT NULL,"DATAOBJ#" NUMBER,"OWNER#" NUMBER NOT N
ULL,"NAME" VARCHAR2(30) NOT NULL,"NAMESPACE" NUMBER NOT NULL,"SUBNAME" VARCHAR2(
30),"TYPE#" NUMBER NOT NULL,"CTIME" DATE NOT NULL,"MTIME" DATE NOT NULL,"STIME"
DATE NOT NULL,"STATUS" NUMBER NOT NULL,"REMOTEOWNER" VARCHAR2(30),"LINKNAME" VAR
CHAR2(128),"FLAGS" NUMBER,"OID$" RAW(16),"SPARE1" NUMBER,"SPARE2" NUMBER,"SPARE3
" NUMBER,"SPARE4" VARCHAR2(1000),"SPARE5" VARCHAR2(1000),"SPARE6" DATE) PCTFREE
10 PCTUSED 40 INITRANS 1 MAXTRANS 255 STORAGE ( INITIAL 16K NEXT 1024K MINEXTEN
TS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 OBJNO 18 EXTENTS (FILE 1 BLOCK 121))
36
CREATE UNIQUE INDEX I_OBJ1 ON OBJ$(OBJ#) PCTFREE 10 INITRANS 2 MAXTRANS 255 STOR
AGE ( INITIAL 64K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 O
BJNO 36 EXTENTS (FILE 1 BLOCK 217))
10 rows selected.
SQL>
由这里我们可以看出，bootstrap$ 中实际上是记录了一些数据库系统基本对象的创建语句，那对于我们数据库来说，也可以看做建立一个表结构，通过这个结构可以由关系型数据库的方式去获取文件中数据，进一步创建相关的重要对象，从而启动数据库。
ok,接下来我们看看trace文件中的内容，发现
CREATE ROLLBACK SEGMENT SYSTEM STORAGE ( INITIAL 112K NEXT 1024K MINEXTENTS
1 MAXEXTENTS 32765 OBJNO 0 EXTENTS (FILE 1 BLOCK 9))
在数据库系统表空间的头部创建了系统回滚段（block 9 开始，1---8 属于数据文件头）再往下
CREATE CLUSTER C_OBJ#("OBJ#" NUMBER) PCTFREE 5 PCTUSED 40 INITRANS 2 MAXTRANS
255 STORAGE ( INITIAL 136K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 OBJNO 2 EXTENTS (FILE 1 BLOCK 25)) SIZE 800
这里同样是直接指定了该cluster 的段头位置 block 25
SQL> select file_id,block_id from dba_extents where segment_name = 'C_OBJ#';
1 25
1 33
1 41
1 3241
1 4441
1 4473
1 4489
1 4513
1 4529
1 4561
1 4585
1 4609
1 4641
1 4681
1 4753
1 4833
1 4873
1 12681
1 23689
1 26249
20 rows selected.
CREATE INDEX I_OBJ# ON CLUSTER C_OBJ# PCTFREE 10 INITRANS 2 MAXTRANS 255
STORAGE ( INITIAL 64K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 OBJNO 3 EXTENTS (FILE 1 BLOCK 49))
CREATE TABLE TAB$("OBJ#" NUMBER NOT NULL,"DATAOBJ#" NUMBER,"TS#" NUMBER NOT
NULL,"FILE#" NUMBER NOT NULL,"BLOCK#" NUMBER NOT NULL,"BOBJ#" NUMBER,"TAB#"
NUMBER,"COLS" NUMBER NOT NULL,"CLUCOLS" NUMBER,"PCTFREE$" NUMBER NOT NULL,
"PCTUSED$" NUMBER NOT NULL,"INITRANS" NUMBER NOT NULL,"MAXTRANS" NUMBER NOT
NULL,"FLAGS" NUMBER NOT NULL,"AUDIT$" VARCHAR2(38) NOT NULL,"ROWCNT" NUMBER,
"BLKCNT" NUMBER,"EMPCNT" NUMBER,"AVGSPC" NUMBER,"CHNCNT" NUMBER,"AVGRLN"
NUMBER,"AVGSPC_FLB" NUMBER,"FLBCNT" NUMBER,"ANALYZETIME" DATE,"SAMPLESIZE"
NUMBER,"DEGREE" NUMBER,"INSTANCES" NUMBER,"INTCOLS" NUMBER NOT NULL,
"KERNELCOLS" NUMBER NOT NULL,"PROPERTY" NUMBER NOT NULL,"TRIGFLAG" NUMBER,
"SPARE1" NUMBER,"SPARE2" NUMBER,"SPARE3" NUMBER,"SPARE4" VARCHAR2(1000),
"SPARE5" VARCHAR2(1000),"SPARE6" DATE) STORAGE ( OBJNO 4 TABNO 1) CLUSTER C_OBJ#(OBJ#)
我们可以看到，从tab$ 开始，存储发生了变化，
STORAGE ( OBJNO 4 TABNO 1) CLUSTER C_OBJ#(OBJ#)
那这里的 objno 4 tabno 1 表示什么意思呢?(通过 cluster C_OBJ#(OBJ#)我们就可以找到表tab$自身)
SQL> select * from tab$ where obj# = 4 and tab# = 1;
OBJ# DATAOBJ# TS# FILE# BLOCK# BOBJ# TAB#
---------- ---------- ---------- ---------- ---------- ---------- ----------
COLS CLUCOLS PCTFREE$ PCTUSED$ INITRANS MAXTRANS FLAGS
---------- ---------- ---------- ---------- ---------- ---------- ----------
AUDIT$ ROWCNT BLKCNT EMPCNT
-------------------------------------- ---------- ---------- ----------
AVGSPC CHNCNT AVGRLN AVGSPC_FLB FLBCNT ANALYZETI SAMPLESIZE
---------- ---------- ---------- ---------- ---------- --------- ----------
DEGREE INSTANCES INTCOLS KERNELCOLS PROPERTY TRIGFLAG SPARE1
---------- ---------- ---------- ---------- ---------- ---------- ----------
SPARE2 SPARE3
---------- ----------
SPARE4
--------------------------------------------------------------------------------
SPARE5
--------------------------------------------------------------------------------
SPARE6
---------
4 2 0 1 25 2 1
37 1 0 0 0 0 17
-------------------------------- 921 428 83
2381 0 139 6368 7 11-AUG-03 921
37 37 1024 0 0
06-AUG-03
SQL>
由这里可以看出，存储参数从这里开始，就从数据文件中固定表的记录中取出来
由此再往trace文件看下去，就会发现这个时候数据库已经可以通过已有信息从系统表空间文件中提取结构信息和数据信息。
我们看上面关于存储的定义
CREATE CLUSTER C_OBJ#("OBJ#" NUMBER) PCTFREE 5 PCTUSED 40 INITRANS 2 MAXTRANS
255 STORAGE ( INITIAL 136K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 OBJNO 2 EXTENTS (FILE 1 BLOCK 25)) SIZE 800
这里的extents 指明了是 block 25,我们假设在初始化参数文件中db_block_size设置不当，则必然导致文件位置定位错误。
之所以要来研究这个问题（以前研究了今天写出来而已），是因为最早思考这样一个问题。
我们要查询自己系统的一个表，则首先是去数据字典中找到该表的结构性信息
这些结构性信息存储在数据字典表中，但我们又从哪里获得数据字典表本身的结构性信息呢？虽然从表中我们可以查询到字典表本身的结构性信息，那在数据库open的时候最初是如何确定结构的？是写死在程序中呢？还是怎样处理的。
由上面内容我们可以看出，程序中只要提供 bootstrap$ 的创建脚本，确定好bootstap$的结构同时指定了段头的位置，然后就能通过段头去获取bootstrap$中的内容，而这些内容就是为一些字典表创建结构的sql_text，这样就因了bootstrap$这个天生的蛋，孵化出了c_obj#,tab$等等鸡，这些鸡又继续生蛋，则完成了数据库字典表结构的建立，也就是说，oracle用关系型表来实现了自身结构的建立。
trace 结果参考附件
[oracle@jumper udump]$ tkprof hsjf_ora_27579.trc dbopen.txt
TKPROF: Release 9.2.0.3.0 - Production on Fri Feb 27 18:04:22 2004
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
[oracle@jumper udump]$ ls -l
total 492
-rw-r--r-- 1 oracle dba 125733 2月 27 18:04 dbopen.txt
-rw-r----- 1 oracle dba 366700 2月 27 18:02 hsjf_ora_27579.trc
[oracle@jumper udump]$ cat dbopen.txt
TKPROF: Release 9.2.0.3.0 - Production on Fri Feb 27 18:04:22 2004
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Trace file: hsjf_ora_27579.trc
Sort options: default
********************************************************************************
count = number of times OCI procedure was executed
cpu = cpu time in seconds executing
elapsed = elapsed time in seconds executing
disk = number of physical reads of buffers from disk
query = number of buffers gotten for consistent read
current = number of buffers gotten in current mode (usually for update)
rows = number of rows processed by the fetch or execute call
********************************************************************************
alter session set sql_trace = true
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 0 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 1 0.00 0.00 0 0 0 0
Misses in library cache during parse: 0
Misses in library cache during execute: 1
Optimizer goal: CHOOSE
Parsing user id: SYS
********************************************************************************
alter database open
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 1.41 2.60 170 3004 165 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 1.41 2.60 170 3004 165 0
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: SYS
***********************************************************
create table bootstrap$ ( line# number not null, obj#
number not null, sql_text varchar2(4000) not null) storage (initial
50K objno 56 extents (file 1 block 377))
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 0
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 1)
********************************************************************************
select line#, sql_text
from
bootstrap$ where obj# != :1
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 57 0.00 0.00 4 59 0 56
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 59 0.00 0.00 4 59 0 56
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 1)
Rows Row Source Operation
------- ---------------------------------------------------
56 TABLE ACCESS FULL OBJ#(56) (cr=59 r=4 w=0 time=3282 us)
***********************************************************
CREATE ROLLBACK SEGMENT SYSTEM STORAGE ( INITIAL 112K NEXT 1024K MINEXTENTS
1 MAXEXTENTS 32765 OBJNO 0 EXTENTS (FILE 1 BLOCK 9))
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 0
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 1)
***********************************************************
CREATE CLUSTER C_OBJ#("OBJ#" NUMBER) PCTFREE 5 PCTUSED 40 INITRANS 2 MAXTRANS
255 STORAGE ( INITIAL 136K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 OBJNO 2 EXTENTS (FILE 1 BLOCK 25)) SIZE 800
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 0
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 1)
********************************************************************************
CREATE INDEX I_OBJ# ON CLUSTER C_OBJ# PCTFREE 10 INITRANS 2 MAXTRANS 255
STORAGE ( INITIAL 64K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 OBJNO 3 EXTENTS (FILE 1 BLOCK 49))
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 0
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 1)
***********************************************************
CREATE TABLE TAB$("OBJ#" NUMBER NOT NULL,"DATAOBJ#" NUMBER,"TS#" NUMBER NOT
NULL,"FILE#" NUMBER NOT NULL,"BLOCK#" NUMBER NOT NULL,"BOBJ#" NUMBER,"TAB#"
NUMBER,"COLS" NUMBER NOT NULL,"CLUCOLS" NUMBER,"PCTFREE$" NUMBER NOT NULL,
"PCTUSED$" NUMBER NOT NULL,"INITRANS" NUMBER NOT NULL,"MAXTRANS" NUMBER NOT
NULL,"FLAGS" NUMBER NOT NULL,"AUDIT$" VARCHAR2(38) NOT NULL,"ROWCNT" NUMBER,
"BLKCNT" NUMBER,"EMPCNT" NUMBER,"AVGSPC" NUMBER,"CHNCNT" NUMBER,"AVGRLN"
NUMBER,"AVGSPC_FLB" NUMBER,"FLBCNT" NUMBER,"ANALYZETIME" DATE,"SAMPLESIZE"
NUMBER,"DEGREE" NUMBER,"INSTANCES" NUMBER,"INTCOLS" NUMBER NOT NULL,
"KERNELCOLS" NUMBER NOT NULL,"PROPERTY" NUMBER NOT NULL,"TRIGFLAG" NUMBER,
"SPARE1" NUMBER,"SPARE2" NUMBER,"SPARE3" NUMBER,"SPARE4" VARCHAR2(1000),
"SPARE5" VARCHAR2(1000),"SPARE6" DATE) STORAGE ( OBJNO 4 TABNO 1) CLUSTER
C_OBJ#(OBJ#)
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 0
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 1)
********************************************************************************
CREATE TABLE CLU$("OBJ#" NUMBER NOT NULL,"DATAOBJ#" NUMBER,"TS#" NUMBER NOT
NULL,"FILE#" NUMBER NOT NULL,"BLOCK#" NUMBER NOT NULL,"COLS" NUMBER NOT
NULL,"PCTFREE$" NUMBER NOT NULL,"PCTUSED$" NUMBER NOT NULL,"INITRANS"
NUMBER NOT NULL,"MAXTRANS" NUMBER NOT NULL,"SIZE$" NUMBER,"HASHFUNC"
VARCHAR2(30),"HASHKEYS" NUMBER,"FUNC" NUMBER,"EXTIND" NUMBER,"FLAGS" NUMBER,
"DEGREE" NUMBER,"INSTANCES" NUMBER,"AVGCHN" NUMBER,"SPARE1" NUMBER,"SPARE2"
NUMBER,"SPARE3" NUMBER,"SPARE4" NUMBER,"SPARE5" VARCHAR2(1000),"SPARE6"
VARCHAR2(1000),"SPARE7" DATE) STORAGE ( OBJNO 5 TABNO 2) CLUSTER
C_OBJ#(OBJ#)
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 0
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 1)
********************************************************************************
CREATE CLUSTER C_TS#("TS#" NUMBER) PCTFREE 10 PCTUSED 40 INITRANS 2 MAXTRANS
255 STORAGE ( INITIAL 64K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 OBJNO 6 EXTENTS (FILE 1 BLOCK 57))
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 0
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 1)
********************************************************************************
CREATE INDEX I_TS# ON CLUSTER C_TS# PCTFREE 10 INITRANS 2 MAXTRANS 255
STORAGE ( INITIAL 64K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 OBJNO 7 EXTENTS (FILE 1 BLOCK 65))
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00
