Unix下卸载Oracle表结构到文本中的脚本

dbschema.sh userid/passwd[@connection][table_name]
userid/passwd[@oracle_sid]: 登录数据库的信息
tablename : 卸载的表名[可选]

#!/usr/bin/ksh
#################################################
#
# 模块: dbschema.sh
#
# 描述: 根据一个数据库或表名来获取相应的结构脚本
#
# 参数 1 = 用户名/密码[@实例名]
# 参数 2 = 表名/视图名(可选)
#
# 作者 Bing He
#
# 修改记录
# 日期 修改人 修改描述
#
# 10/20/2003 Bing He 开始编写
#
#################################################

#################################################
##-- 局部变量定义
lv_argc=0 #命令行入参个数
lv_loginfo="" #命令行中的登录信息
lv_table_name="" #命令行中的表名信息
lv_filename="" #输出的文件名
lv_tab_number=0 #需要处理的表的个数
lv_sep='|' #分隔符
lv_grid_str="\t" #输出的距行首的空格
lv_deal_table="" #当前处理的表
lv_file_temp1="get_ddl.temp1" #临时文件名
lv_file_temp2="get_ddl.temp2" #临时文件名
lv_file_temp3="get_ddl.temp3" #临时文件名
lv_file_tab_col="get_ddl.col1" #临时文件名
lv_file_tab_con="get_ddl.con1" #临时文件名
lv_file_col_con="get_ddl.con2" #临时文件名
lv_file_tab_ind="get_ddl.ind1" #临时文件名
lv_file_col_ind="get_ddl.ind2" #临时文件名
##################################################

##################################################
##-- 检查用户名密码的权限
f_check_userid()
{
sqlplus ${lv_loginfo} < /dev/null
set echo off;
set heading off;
desc user_tables;
exit
!
if [ "$?" -ne 0 ]
then
echo "Error:f_check_userid failed."
echo " Please check the username/passwd=[${lv_loginfo}]."
exit
fi
}
###################################################

###################################################
##-- 检查表是否存在
f_check_tablename()
{
sqlplus ${lv_loginfo} < /dev/null
set echo off;
set heading off;
spool ${lv_file_temp1}
select count(*) from user_tables 
where table_name='${lv_table_name}';
spool off
exit
!
if [ "$?" -ne 0 ]
then
echo "Error:f_check_tablename failed."
echo " Please check the [${lv_table_name}]."
exit
fi
lv_number=`cat ${lv_file_temp1}|grep -v "^SQL>"
|grep -v "^$"|grep -v "rows selected`
if [ ${lv_number} -eq 0 ]
then
echo "Error:f_check_tablenaem failed."
echo " Please check the table [${lv_table_name}]
 in [${lv_loginfo}]."
exit
fi
}
#################################################

#################################################
##-- 初始化输出文件
f_generate_file()
{
if [ ${lv_argc} -eq 1 ]
then
lv_str=`echo ${lv_loginfo}|cut -d"/" -f1|
 tr "[:upper:]" "[:lower:]"`
lv_str_main="Structure For User ${lv_str}"
else
lv_str=`echo ${lv_table_name}| tr "[:upper:]"
 "[:lower:]"`
lv_str_main="Structure For Table ${lv_str}"
fi
lv_filename_drop_index="${lv_str}.drop_index"
lv_filename_drop_foreign="${lv_str}.drop_foreign"
lv_filename_drop_table="${lv_str}.drop_table"
lv_filename_create_table="${lv_str}.create_table"
lv_filename_create_foreign="${lv_str}.create_foreign"
lv_filename="${lv_str}.sql"
rm -f ${lv_filename_drop_index}
rm -f ${lv_filename_drop_foreign}
rm -f ${lv_filename_drop_table}
rm -f ${lv_filename_create_table}
rm -f ${lv_filename_create_foreign}
rm -f ${lv_filename}

##--生成基础数据
lv_str1="---------------------------------------------------"
echo "\n"${lv_str1} >> ${lv_filename_drop_index}
echo "--** 第一步: 删除索引 **--" >> ${lv_filename_drop_index}
echo ${lv_str1}"\n" >> ${lv_filename_drop_index}

lv_str1="---------------------------------------------------"
echo "\n"${lv_str1} >> ${lv_filename_drop_foreign}
echo "--** 第二步: 删除外键 **--" >> ${lv_filename_drop_foreign}
echo ${lv_str1}"\n" >> ${lv_filename_drop_foreign}

lv_str1="---------------------------------------------------"
echo "\n"${lv_str1} >> ${lv_filename_drop_table}
echo "--** 第三步: 删除表 **--" >> ${lv_filename_drop_table}
echo ${lv_str1}"\n" >> ${lv_filename_drop_table}

lv_str1="---------------------------------------------------"
echo "\n"${lv_str1} >> ${lv_filename_create_table}
echo "--** 第四步: 创建表结构,主键,索引**--" >> ${lv_filename_create_table}
echo ${lv_str1} >> ${lv_filename_create_table}

lv_str1="--------------------------------------------------"
echo "\n"${lv_str1} >> ${lv_filename_create_foreign}
echo "--** 第五步: 创建外键 **--" >> ${lv_filename_create_foreign}
echo ${lv_str1}"\n" >> ${lv_filename_create_foreign}

lv_str1="--------------------------------------------------"
echo "\n"${lv_str1} >> ${lv_filename}
echo "--** DESC :${lv_str_main}" >> ${lv_filename}
echo "--** AUTHOR:Bing He" >> ${lv_filename}
echo "--** DATE :20`date +%y-%m-%d" >> ${lv_filename}
echo ${lv_str1}"\n" >> ${lv_filename}

}
###########################################################

###########################################################
##-- 获取用户下的表列表
f_get_tables()
{
rm -f ${lv_file_temp1}
sqlplus ${lv_loginfo} </dev/null
set colsep ${lv_sep};
set echo off;
set feedback off;
set heading off;
set pagesize 0;
set linesize 1000;
set numwidth 12;
set termout off;
set trimout on;
set trimspool on;
spool ${lv_file_temp1};
select table_name from user_tables;
spool off;
exit
!
if [ "$?" -ne 0 ] ; then
echo "Usage:f_get_tables failed."
exit
fi

if [ -f ${lv_file_temp1} ]
then
lv_table_name=`cat ${lv_file_temp1} 
|grep -v "^SQL>" | tr -d ' '| tr "[:lower:]" "[:upper:]"`
echo ${lv_table_name} > 1.out
else
echo "Error:f_get_tables failed.${lv_file_temp1} file not found!"
exit
fi
rm -f ${lv_file_temp1}
}
#################