Linux下通過script命令記錄數(shù)據(jù)庫操作教程
Linux下通過sc
對DBA而言，經(jīng)常碰到升級數(shù)據(jù)庫或是apply patch，以及有些時候需要運行大量的腳本。對于這些操作我們希望現(xiàn)在在屏幕同時又輸出的文件以備后續(xù)查詢過程中曾經(jīng)丟失的步驟或錯誤。接下來是小編為大家收集的Linux下通過script 命令記錄數(shù)據(jù)庫操作教程，希望能幫到大家。
Linux下通過script 命令記錄數(shù)據(jù)庫操作教程
1、script命令描述
復(fù)制代碼
代碼如下:
script命令會記錄所有的操作到文件同時在屏幕上輸出，直到終止登陸的會話，或使用CRTL+D，或使用exit退出則停止記錄。
這個命令對于數(shù)據(jù)庫的升級或是重要設(shè)置的情形下使用可以用于后續(xù)查詢操作成功或失敗。
用法: $ script [upgrade.log]
如果未指定日志文件名的情形，自動生成日志文件名為typescript。
如果需要輸出到已經(jīng)存在的日志文件，則使用 -a 參數(shù)，再接已經(jīng)存在日志文件名。
如果需要在輸出到日志文件的同時，也可以查看日志文件的內(nèi)容，可以使用 -f 參數(shù)。
< p># script 幫助描述robin@SZDB:~> man script
NAME
script - make typescript of terminal session
< p>SYNOPSISscript [-a] [-c COMMAND] [-f] [-q] [-t] [file]
< p>DESCRIPTIONScript makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of
an interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
< p> If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in thefile typescript.
< p> Options: < p> -a Append the output to file or typescript, retaining the prior contents. < p> -c COMMANDRun the COMMAND rather than an interactive shell. This makes it easy for a script to capture the output of a pro-
gram that behaves differently when its stdout is not a tty.
< p> -f Flush output after each write. This is nice for telecooperation: One person does `mkfifo foo; script -f foo' andanother can supervise real-time what is being done using `cat foo'.
< p> -q Be quiet. < p> -t Output timeing data to standard error. This data contains two fields, separated by a space. The first field indi-cates how much time elapsed since the previous output. The second field indicates how many characters were output
this time. This information can be used to replay typescripts with realistic typing and output delays.
2、script命令用法示例
復(fù)制代碼
代碼如下:
a、script命令后接日志文件名
robin@SZDB:~> script test_logfile.log #啟用script
Script started, file is test_logfile.log
< p> .................#中間操作省略robin@SZDB:~> exit #停止script
exit
Script done, file is test_logfile.log
< p>#查看剛剛生成的日志文件robin@SZDB:~> more test_logfile.log
Script started on Fri 26 Apr 2013 05:45:23 PM CST
robin@SZDB:~> sid
bash: sid: command not found
robin@SZDB:~> . ~/.bash_profile
robin@SZDB:~> sid
ORA_CRS_HOME=/opt/oracle/product/10gR2/crs
ORACLE_PATH=.:/users/robin/dba_scripts/custom/sql
ORA_ASM_HOME=/opt/oracle/product/10gR2/asm
ORACLE_SID=SYBO2SZ
ORACLE_BASE=/users/oracle
ORACLE_HOME=/users/oracle/OraHome10g
robin@SZDB:~> sql
< p>SQL*Plus: Release 10.2.0.3.0 - Production on Fri Apr 26 17:46:12 2013 < p>Copyright (c) 1982, 2006, Oracle. All Rights Reserved. < p>Error accessing PRODUCT_USER_PROFILEWarning: Product user profile information not loaded!
You may need to run PUPBLD.SQL as SYSTEM
< p>Connected to:Oracle Database 10g Release 10.2.0.3.0 - 64bit Production
< p>goex_admin@SYBO2SZ> alter session set current_schema=scott; < p>Session altered. < p>goex_admin@SYBO2SZ> select * from dept; < p> DEPTNO DNAME LOC---------- -------------- -------------
10 ACCOUNTING NEW YORK
20 RESEARCH DALLAS
30 SALES CHICAGO
40 OPERATIONS BOSTON
< p>goex_admin@SYBO2SZ> exitDisconnected from Oracle Database 10g Release 10.2.0.3.0 - 64bit Production
robin@SZDB:~> exit
exit
< p>Script done on Fri 26 Apr 2013 05:46:32 PM CST < p>b、script 命下直接跟腳本名的示例robin@SZDB:~> script -c retval.sh
Script started, file is typescript
7788 SCOTT ANALYST 7566 19870419 00:00:00 3100 20
Script done, file is typescript
< p>#被執(zhí)行的shell腳本的內(nèi)容# Author : Robinson
# Blog : http://blog.csdn.ner/robinson_0612
< p>robin@SZDB:~> more ~/dba_scripts/custom/bin/retval.sh#!/bin/bash
RETVAL=`sqlplus -silent scott/tiger <
SET PAGESIZE 0 FEEDBACK OFF VERIFY OFF HEADING OFF ECHO OFF
SELECT * FROM emp WHERE ename='SCOTT';
EXIT;
EOF`
if [ -z "$RETVAL" ]; then
echo "No rows returned from database"
exit 0
else
echo $RETVAL
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