Sqlplus 到 unix shell 命令由于某种原因正在丢失变量值

Question

I am trying to drop my sqlplus session into a unix command, run an executable and format the output into an insert statement for a database.

This is what I want to end up with, and actually what I have DOES work:

    -bash-4.2$ cat blah.log
INSERT INTO TMP_LIST_SEC_STATUS VALUES ('Security ON: Local OS Authentication');

This is the command I am using to give me this output in blah.log.

It formats the output of lsnrctl status and uses the listener name as a parameter to get the output, sorry for poor format, it is all in one line. Anyone with oracle on unix can run this without harm:

var1=`grep ' =$' $ORACLE_HOME/network/admin/listener.ora | grep -v '(' | grep -v 'SID_LIST' | sed 's/=//g' | xargs -n 1 lsnrctl status | sed -e 's/ \{2,\}/ /g' | grep -i Security | sed -n '1p'|sed 's/  */ /g' | sed -e "s/.*/'&'/"` | echo "INSERT INTO TMP_LIST_SEC_STATUS VALUES ($var1);" > blah.log

So, this works fine at a command prompt as user oracle. However, I run into problems when I run it from a sqlplus session

SQL> ! var1=`grep ' =$' $ORACLE_HOME/network/admin/listener.ora | grep -v '(' | grep -v 'SID_LIST' | sed 's/=//g' | xargs -n 1 lsnrctl status | sed -e 's/ \{2,\}/ /g' | grep -i Security | sed -n '1p'|sed 's/  */ /g' | sed -e "s/.*/'&'/"` | echo "INSERT INTO TMP_LIST_SEC_STATUS VALUES ($var1);" > blah.log

SQL> !cat blah.log
INSERT INTO TMP_LIST_SEC_STATUS VALUES ();

The problem is that the content of the variable is lost. So, this is getting stripped out:

'Security ON: Local OS Authentication'

Does anyone see what I am missing?

Why does it all work fine on a unix command prompt, but sqlplus loses the variable values?

I feel like it's a special character / escape problem but I can't see where despite tying myself in knots with trial and error.

Answer 1

You have a lot going there. If you post example data and expected output, someone can probably answer with a much tidier method for parsing the text that you need.

However, this part of the command in particular is flawed:

... sed -e "s/.*/'&'/"` | echo "INSERT INTO TMP_LIST_SEC_STATUS VALUES ($var1);" > blah.log

You shouldn't have a pipe here. Try replacing | with ; .

I suspect it only works in the shell because you already set $var1 at some point earlier.