exp日常操作
1、跟蹤exp導出操作
strace -o sexp.txt exp user/password file=exptable.dmp buffer=4096000
or
ps -ef |grep exp
strace -c -p exp_pid
eg:
[oracle@orcl ~]$ strace -c -p 3859
Process 3859 attached - interrupt to quit
Process 3859 detached
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
87.38 0.004672 2336 2 brk
6.62 0.000354 0 2045 write
6.00 0.000321 0 1882 read
0.00 0.000000 0 5 close
0.00 0.000000 0 18 lseek
0.00 0.000000 0 4 munmap
0.00 0.000000 0 1 rt_sigaction
0.00 0.000000 0 2 rt_sigprocmask
------ ----------- ----------- --------- --------- ----------------
100.00 0.005347 3959 total
2、EXP-00091: Exporting questionable statistics
[oracle@orcl ~]$ exp lineqi/lineqi file=/home/oracle/aaa.dmp tables=aaa query=\" where id=2 \"
Export: Release 11.2.0.4.0 - Production on Sat Oct 21 13:22:12 2017
……………………
About to export specified tables via Conventional Path ...
. . exporting table AAA 1 rows exported
EXP-00091: Exporting questionable statistics
導出部分表中數據，提示統計信息有問題，這裏可以加上statistics=none參數
exp lineqi/lineqi file=/home/oracle/aaa.dmp tables=aaa query=\" where id=2 \" statistics=none
About to export specified tables via Conventional Path ...
. . exporting table AAA 1 rows exported
Export terminated successfully without warnings.
出現EXP-00091還有可能是數據庫字符集與客戶字符集（NLS_LANG）不一致，
select * from v$nls_parameters where parameter like ‘NLS_CHARACTERSET%‘;
NLS_CHARACTERSET AL32UTF8
[oracle@orcl ~]$ echo $NLS_LANG
AMERICAN_AMERICA.ZHS16GBK
[oracle@orcl ~]$ exp lineqi/lineqi@satdb file=/home/oracle/aaa04.dmp tables=aaa
Export: Release 11.2.0.4.0 - Production on Sat Oct 21 13:36:18 2017
About to export specified tables via Conventional Path ...
. . exporting table AAA 14 rows exported
EXP-00091: Exporting questionable statistics.
Export terminated successfully with warnings.
3、獲取exp導出dump文件中表信息
strings test02.dmp |grep "CREATE TABLE"|awk ‘{print $3}‘|sed ‘s/"//g‘
AAA
BFW_TEST
CBC_TEST
EMP1
PAGE
strings test02.dmp |grep "CREATE TABLE"|awk ‘{print $3}‘|sed ‘s/"//g‘|awk ‘{if(FNR==1) print "table="$1;else print ","$1}‘
table=AAA
,BFW_TEST
,CBC_TEST
,EMP1
,PAGE
exp日常操作