带有行号的shell脚本中的确切错误消息

Question

我有一个shell脚本，它有以下命令：

LOGFILE=XX`date +%Y-%m-%d-%H:%M:%S`.log
LOG_PATH=`echo $CUR_DIR/$LOG_FILE`

echo "Creating Custom Package, Synonyms and Grants..."
echo    "">>$LOGFILE

if sqlplus $APPS_USER @Alter_table_script.sql
then
    echo "Custom table created successfully in APPS schema"     "">>$LOGFILE
    echo "Custom table created successfully in APPS schema" 
else
    echo "Error in creating custom  table in APPS schema"     "">>$LOGFILE
    echo "Error in creating Custom table  in APPS schema" 
fi

Alter_table_script是一个带有alter和create语句的sql文件。现在很少有语句失败，但在日志中我没有确切的错误和捕获的行而是显示Custom table created successfully in APPS schema如何捕获此文件中的确切错误？