oracle批量数据导入工具 sqlldr

sqlldr工具参数：

[oracle@server ~]$ sqlldr 

SQL*Loader: Release 11.2.0.3. - Production on Wed Nov  :: 

Copyright (c) , , Oracle and/or its affiliates.  All rights reserved.

Usage: SQLLDR keyword=value [,keyword=value,...]

Valid Keywords:

    userid -- ORACLE username/password
   control -- control file name
       log -- log file name
       bad -- bad file name
      data -- data file name
   discard -- discard file name
discardmax -- number of discards to allow          (Default all)
      skip -- number of logical records to skip    (Default )
      load -- number of logical records to load    (Default all)
    errors -- number of errors to allow            (Default )
      rows -- number of rows in conventional path bind array or between direct path data saves
               (Default: Conventional path , Direct path all)
  bindsize -- size of conventional path bind array in bytes  (Default )
    silent -- suppress messages during run (header,feedback,errors,discards,partitions)
    direct -- use direct path                      (Default FALSE)
   parfile -- parameter file: name of file that contains parameter specifications
  parallel -- do parallel load                     (Default FALSE)
      file -- file to allocate extents from
skip_unusable_indexes -- disallow/allow unusable indexes or index partitions  (Default FALSE)
skip_index_maintenance -- do not maintain indexes, mark affected indexes as unusable  (Default FALSE)
commit_discontinued -- commit loaded rows when load is discontinued  (Default FALSE)
  readsize -- size of read buffer                  (Default )
external_table -- use external table for load; NOT_USED, GENERATE_ONLY, EXECUTE  (Default NOT_USED)
columnarrayrows -- number of rows for direct path column array  (Default )
streamsize -- size of direct path stream buffer in bytes  (Default )
multithreading -- use multithreading in direct path
 resumable -- enable or disable resumable for current session  (Default FALSE)
resumable_name -- text string to help identify resumable statement
resumable_timeout -- wait time (in seconds) for RESUMABLE  (Default )
date_cache -- size (in entries) of date conversion cache  (Default )
no_index_errors -- abort load on any index errors  (Default FALSE)

PLEASE NOTE: Command-line parameters may be specified either by
position or by keywords.  An example of the former case is 'sqlldr
scott/tiger foo'; an example of the latter is 'sqlldr control=foo
userid=scott/tiger'.  One may specify parameters by position before
but not after parameters specified by keywords.  For example,
'sqlldr scott/tiger control=foo logfile=log' is allowed, but
'sqlldr scott/tiger control=foo log' is not, even though the
position of the parameter 'log' is correct.
[oracle@server ~]$ 

创建测试表：

[oracle@server ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3. Production on Wed Nov  :: 

Copyright (c) , , Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3. - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> create table test(name varchar2(), id varchar2());

Table created.

SQL> exit

准备要导入数据data.txt：

[oracle@server ~]$ vi data.txt
jack,
jimmy,
sara,

编写导入控制文件input.ctl：

[oracle@server ~]$ vi input.ctl
LOAD DATA
INFILE 'data.txt'
INTO TABLE test
APPEND
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
(name, id)

执行导入：

[oracle@server ~]$ sqlldr userid=\'/ as sysdba\' control=input.ctl

SQL*Loader: Release 11.2.0.3. - Production on Wed Nov  :: 

Copyright (c) , , Oracle and/or its affiliates.  All rights reserved.

Commit point reached - logical record count 

可以看出影响记录为3行，说明导入成功。

另外，导入过程的详细信息可以在默认日志文件input.log中查看，如：

[oracle@server ~]$ more input.log 

SQL*Loader: Release 11.2.0.3. - Production on Wed Nov  :: 

Copyright (c) , , Oracle and/or its affiliates.  All rights reserved.

Control File:   input.ctl
Data File:      data.txt
  Bad File:     data.bad
  Discard File:  none specified

 (Allow all discards)

Number to load: ALL
Number to skip:
Errors allowed:
Bind array:      rows, maximum of  bytes
Continuation:    none specified
Path used:      Conventional

Table TEST, loaded from every logical record.
Insert option in effect for this table: APPEND

   Column Name                  Position   Len  Term Encl Datatype
------------------------------ ---------- ----- ---- ---- ---------------------
NAME                                FIRST     *   ,  O(") CHARACTER
ID                                   NEXT     *   ,  O(") CHARACTER            

Table TEST:
   Rows successfully loaded.
   Rows not loaded due to data errors.
   Rows not loaded because all WHEN clauses were failed.
   Rows not loaded because all fields were null.

Space allocated for bind array:                   bytes( rows)
Read   buffer bytes: 

Total logical records skipped:
Total logical records read:
Total logical records rejected:
Total logical records discarded:        

Run began on Wed Nov  ::
Run ended on Wed Nov  :: 

Elapsed time was:     ::00.30
CPU time was:         ::00.02