informix dbload 数据导入脚本

#!/usr/bin/env sh
#
#  File:  dbload.sh
#  Creation Date:  10/09/12
#  Last Modified:  2013/6/14 11:00:53
#  Purpose:脚本可一次导入单张表或者多张表数据
#
#-----------------------------------------------------------------------------------
usage()
{
   echo "=================使用说明===================                     "
   echo "Usage:                                                           "
   echo "  `basename $0` -a 目录 [-d] [-n]                                "
   echo "  `basename $0` -s 表名 [-d] [-n]                                "
   echo "                                                                 "
   echo "Options:                                                         "
   echo "   -a 目录    导入多张表,必须指定多张表数据目录的绝对路径.       "
   echo "   -s 表名    导入一张表,必须指定该表数据文件的绝对路径.         "
   echo "   -d 数据库名字    默认为tnmsdb2                                "
   echo "   -n 导入行数      默认为10000                                  "
   echo "                                                                 "
   echo "例子:                                                            "
   echo "导入多张表:                                                      "
   echo "  `basename $0` -a /home/informix/tnmsdb2                        "
   echo "导入一张表:                                                      "
   echo "  `basename $0` -s /home/informix/circuit                        "
   echo "指定数据库和导入行数:                                            "
   echo "  `basename $0` -s /home/informix/circuit -d tnmsdb2 -n 1000     "
   exit 0
}
#
while getopts "a:s:d:n:" OPTION
   do
      case $OPTION in
            a) Dir="${OPTARG}"
               ;;
            s) TF="${OPTARG}"
               ;;
            d) DN="${OPTARG}"
                 ;;
            n) number="${OPTARG}"
                 ;;
            *|\?) usage
               ;;
      esac
done
#创建存放控制文件目录
if [ ! -d $HOME/ctrfile ];then
  echo "Create control file directory."
  mkdir $HOME/ctrfile
else
  echo "$HOME/ctrfile is exist."
fi
#定义控制文件目录、导入脚本、导入日志名字变量
Ctrpath=$HOME/ctrfile
TNfile=$Ctrpath/TNfile
dbload=$Ctrpath/dbload.sh
dbloadlog=$Ctrpath/dbload.log
#定义默认数据库名字
if [ -z $DN ];then
  DN=tnmsdb2
fi
dbname=`onstat -d|grep 'N  B'|awk '{print $10}'|grep -l $DN`
if [ -z $dbname ];then
  echo $DN is not exist.
  exit 0
fi
#定义默认每次导入行数
if [ -z $number ];then
  number=10000
fi
#判断输入参数是否正确
if [ $# = 0 ];then
  echo "error:`basename $0` parameter is error"
  usage
fi
#
if [ ! -d $Dir ];then
  echo error:Enter the directory is not exist.
  exit 0
fi
#
if [ ! -f $TF ];then
  echo error:Enter the tabfile is not exist.
  exit 0
fi
#数据导入函数
Impot()
{
  chmod +x $dbload
  echo "Begin backstage import data......"
  nohup $dbload >$dbloadlog &
  echo "Please check the log $dbloadlog."
}
#判断参数-a后面参数是否正确
if [ $2 = "$Dir" ];then
  ls $Dir >$TNfile
  echo "Begin create control file,Please wait......"
  while read Tabname
    do
    #查询表的列数
     echo "select ncols num from systables where tabname='$Tabname'"|dbaccess $DN>$Ctrpath/a
     num=`awk 'NR==5{print $Tabname}' $Ctrpath/a`
     #判断表列数是否为空
     if [ ! -z $num ];then
     #定义控制文件名字
     CF=$Ctrpath/$Tabname.ctr
     echo "FILE $Dir/$Tabname DELIMITER '|' $num;" >$CF
     echo "INSERT INTO $Tabname;" >>$CF
     echo 'echo `date`' Begin dbload $Tabname >>$dbload
     echo "dbload -d $DN -c $CF -n $number -l '`date +%Y%m%d`'.log" >>$dbload
     echo 'echo `date`' finished dbload $Tabname >>$dbload
     fi
  done<$TNfile
  echo "create control file finished."
  if [ -f $Ctrpath/a ];then
    #删除临时文件
    rm $TNfile $Ctrpath/a
  fi
#判断参数-s后面参数是否正确
elif [ $2 = "$TF" ];then
    #去除目录取文件名字
    TF=`basename $TF`
    #定义控制文件名字
    CF=$Ctrpath/$TF.ctr
    #查询表的列数
    echo "select ncols num from systables where tabname='$TF'"|dbaccess $DN>$Ctrpath/a
    num=`awk 'NR==5{print $TF}' $Ctrpath/a`
    #判断表列数是否为空
    if [ ! -z $num ];then
    echo "FILE $2 DELIMITER '|' $num;" >$CF
    echo "INSERT INTO $TF;" >>$CF
    echo 'echo `date`' Begin dbload $TF >$dbload
    echo "dbload -d $DN -c $CF -n $number -l '`date +%Y%m%d`'.log" >>$dbload
    echo 'echo `date`' finished dbload $TF >>$dbload
    fi
    if [ -f $Ctrpath/a ];then
      #删除临时文件
      rm $Ctrpath/a
    fi
else
    echo "error:The input parameters is error"
    usage
    exit 0
fi
#判断是否需要后台执行导入命令,回车默认为y
echo "Import data[y]: y/n"
read execute
if [ -z $execute ];then
  execute="y"
fi
if [ $execute = "y" ];then
  Impot
else
  echo "Please manually run the script."
  echo "nohup $dbload >$dbloadlog &"
fi