在 cron 中转义符号

Question

我有以下脚本（它连接到 oracle 数据库，查找应用的 arclog 并将其删除）：

ARCLOGS=$(/oracle/base11202/11202/bin/sqlplus -s /  as sysdba <<EOF
set head off
set verify off
set feedback off
select name from v$archived_log where applied = 'YES' and first_time > sysdate - 1 order by sequence#;
exit;
EOF)

echo "${ARCLOGS}" | while read arc
do
  if [[ -e $arc ]] 
  then
    rm -f $arc
  fi
done

当我自己启动它时它工作正常。但想法是从 cron 开始。 Cron 在尝试启动此脚本时出错：

Your "cron" job executed on test on Mon Nov 14 15:17:00 2011
if [ -e /arclogs/arcs.sh ]; then sh -x /arclogs/arcs.sh; fi 


produced the following output:

+ + /oracle/base11202/bin/sqlplus -s / as sysdba
+ 0<<
set head off
set verify off
set feedback off
select name from v$archived_log where applied = "YES" and first_time > sysdate - 1 order by sequence#;
exit;
ARCLOGS=select name from v$archived_log where applied = "YES" and first_time > sysdate - 1 order by sequence#
                                                *
ERROR at line 1:
ORA-00904: "YES": invalid identifier
+ read arc
+ echo select name from v$archived_log where applied = "YES" and first_time > sysdate - 1 order by sequence#
                                                *
ERROR at line 1:
ORA-00904: "YES": invalid identifier
+ [[ -e select name from v$archived_log where applied = "YES" and first_time > sysdate - 1 order by sequence# ]]
+ read arc
+ [[ -e * ]]
+ read arc
+ [[ -e ERROR at line 1: ]]
+ read arc
+ [[ -e ORA-00904: "YES": invalid identifier ]]
+ read arc

看起来像是转义符号的问题。但我不知道我必须逃避什么。

顺便说一句，当我将脚本分成两部分时，脚本可以与 cron 一起使用：

arcs.sh：

ARCLOGS=$(/oracle/base11202/bin/sqlplus -s /  as sysdba <<EOF
set head off
set verify off
set feedback off
select name from v$archived_log where applied = 'YES' and first_time > sysdate - 1 order by sequence#;
exit;
EOF)

echo "${ARCLOGS}" | while read arc
do
  if [[ -e $arc ]] 
  then
    rm -f $arc
  fi
done

和 arcs.sql：

connect / as sysdba
set head off
set verify off
set feedback off
select name from v$archived_log where applied = 'YES' and first_time > sysdate - 1 order by sequence#;
exit;

但我想把它合二为一。有人可以帮忙吗？

Answer 1

只是在黑暗中拍摄。尝试从您的 cron 行显式调用 /bin/bash。 Cron 默认使用 sh 执行。

Answer 2

尝试用反斜杠转义单引号：

select name from v$archived_log where applied = \'YES\' and first_time > sysdate - 1 order by sequence#;

引号显然被 shell 吃掉了，Oracle 正试图将裸字符串 YES 解释为标识符而不是字符串常量。

编辑：

cron 任务是在你的 ID 下运行的吗？

编辑 2：

试试这个：

select name from v$archived_log where applied = "'YES'" and first_time > sysdate - 1 order by sequence#;