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#!/bin/bash
# by ray
# 2017-08-31
#v0.1

##get sqltext from dbs_hist_sqltext,sqltext will be save current directory and file name will be sql_id.txt
FromHist(){
sqlplus -s /nolog <<-RAY
conn / as sysdba
set linesize 300
set serveroutput on
set feedback off
spool ./$1.txt
declare
l_buffer varchar2(3000);
l_amount binary_integer :=3000;
l_pos int :=1;
l_clob_length int;
sqlid varchar2(100) := '$1';
begin
select DBMS_LOB.getlength(sql_text) into l_clob_length from dba_hist_sqltext where sql_id=sqlid;
while l_pos<l_clob_length loop
select DBMS_LOB.SUBSTR(sql_text,l_amount,l_pos) into l_buffer from dba_hist_sqltext where sql_id=sqlid;
dbms_output.put(l_buffer);
l_pos:=l_pos+l_amount;
end loop;
dbms_output.put_line(' ');
end;
/
spool off
exit
RAY
}


##get sqltext from V$sqlarea,sqltext will be save current directory and file name will be sql_id.txt
FromMomery(){
sqlplus -s /nolog <<-RAY
conn / as sysdba
set linesize 300
set serveroutput on
set feedback off
spool ./$1.txt
declare
l_buffer varchar2(3000);
l_amount binary_integer :=3000;
l_pos int :=1;
l_clob_length int;
sqlid varchar2(100) := '$1';
begin
select DBMS_LOB.getlength(sql_fulltext) into l_clob_length from v\$sqlarea where sql_id=sqlid;
while l_pos<l_clob_length loop
select DBMS_LOB.SUBSTR(sql_fulltext,l_amount,l_pos) into l_buffer from v\$sqlarea where sql_id=sqlid;
dbms_output.put(l_buffer);
l_pos:=l_pos+l_amount;
end loop;
dbms_output.put_line(' ');
end;
/
spool off
exit
RAY
}

func_help(){
echo "--from specifying how to get sqltext,memery or hist can be used.default momery!!"
echo "--sqlid specify a sql_id"
echo "for example:"
echo "get_fulltext.sh --from=momery --sqlid=*********"
}

#get parameter
argvs=($@)
for i in ${argvs[@]}
do
case `echo $i | awk -F '=' '{print $1}' | awk -F '--' '{print $2}'| tr [a-z] [A-Z]` in
FROM)
fm=`echo $i | awk -F '=' '{print $2}' | tr [a-z] [A-Z]`
;;
SQLID)
sqlid=`echo $i | awk -F '=' '{print $2}' `
;;
HELP)
func_help
exit 1
esac
done

if [ ! ${fm} ]; then
fm='MOMERY'
fi
if [ ! ${sqlid} ]; then
echo "The sql_id must be specified!!"
exit 1
fi

##exec script
if [ ${fm} == "HIST" ];then
FromHist "${sqlid}"
elif [ ${fm} == "MOMERY" ];then
FromMomery "${sqlid}"
else
echo "The type of parameter only are HIST or MOMERY!!"
fi