转载请注明出处:http://blog.csdn.net/guoyjoe/article/details/30839817 ##########恢复前的准备工作 1、做个热备 select alter tablespace ||tablespace_name|| begin backup; ||chr(10)|| host cp ||file_name|| /backup ||chr(10)|| alter tablespace |
转载请注明出处:http://blog.csdn.net/guoyjoe/article/details/30839817
##########恢复前的准备工作
1、做个热备select 'alter tablespace '||tablespace_name|| ' begin backup;' ||chr(10)|| 'host cp '||file_name||' /backup' ||chr(10)|| 'alter tablespace '||tablespace_name|| ' end backup;' from dba_data_files order by tablespace_name;
sys@PROD> alter tablespace SYSAUX begin backup;
2、日志做切换
sys@PROD> alter system switch logfile; System altered. sys@PROD> alter system switch logfile; System altered. sys@PROD> alter system switch logfile; System altered. sys@PROD> conn gyj/gyj Connected. gyj@PROD> select * from gyj_test1; ID NAME ---------- ---------------------------------------------------------------------------------------------------- 1 guoyJ 2 BBBBB gyj@PROD> insert into gyj_test1 values(3,'CCCCC'); 1 row created. gyj@PROD> commit; Commit complete. gyj@PROD> alter system switch logfile; System altered. gyj@PROD> alter system switch logfile; System altered.
3、丢失参数文件,控制文件,redo日志文件
[oracle@jfdb dbs]$ rm -rf spfile.ora [oracle@jfdb dbs]$ rm -rf spfilePROD.ora [oracle@jfdb dbs]$ rm -rf initPROD.ora [oracle@jfdb PROD]$ rm -rf control0* [oracle@jfdb PROD]$ rm -rf redo0*
###########开始恢复
[oracle@jfdb trace]$ cat alert_PROD.log vi /tmp/pfile.ora processes = 150 sga_max_size = 900M sga_target = 900M control_files = "/u01/app/oracle/oradata/PROD/control01.ctl" control_files = "/u01/app/oracle/oradata/PROD/control02.ctl" _controlfile_update_check= "OFF" db_block_size = 8192 log_archive_dest_1 = "location=/arch" undo_tablespace = "UNDOTBS" _in_memory_undo = FALSE service_names = "PROD,crm,oa" local_listener = "(DESCRIPTION= (ADDRESS_LIST= (ADDRESS = (PROTOCOL=TCP)(HOST=jfdb)(PORT=1521)) (ADDRESS = (PROTOCOL=TCP)(HOST=jfdb)(PORT=1522))))" db_name = "PROD" pga_aggregate_target = 200M
2、启动实例 sys@PROD> startup pfile='/tmp/pfile.ora' nomount; ORACLE instance started. Total System Global Area 939495424 bytes Fixed Size 2233960 bytes Variable Size 251660696 bytes Database Buffers 679477248 bytes Redo Buffers 6123520 bytes sys@PROD> create spfile from pfile='/tmp/pfile.ora'; File created.3、开始还原数据文件
oracle@jfdb arch]$ cd /backup [oracle@jfdb backup]$ ll total 1664052 -rw-r-----. 1 oracle oinstall 340795392 Jun 8 06:01 sysaux01.dbf -rw-r-----. 1 oracle oinstall 524296192 Jun 8 06:01 system01.dbf -rw-r-----. 1 oracle oinstall 524296192 Jun 8 06:01 tp01.dbf -rw-r-----. 1 oracle oinstall 209723392 Jun 8 06:01 undotbs01.dbf -rw-r-----. 1 oracle oinstall 104865792 Jun 8 06:02 users01.dbf [oracle@jfdb backup]$ cp * -rf /u01/app/oracle/oradata/PROD
4、查数据库字符集
select distinct dbms_rowid.rowid_block_number(rowid) from props$; DBMS_ROWID.ROWID_BLOCK_NUMBER(ROWID) ------------------------------------ 801 [oracle@jfdb PROD]$ dd if=system01.dbf of=guoyJoe bs=8192 skip=801 count=1 1+0 records in 1+0 records out 8192 bytes (8.2 kB) copied, 0.000159113 s, 51.5 MB/s [oracle@jfdb PROD]$ strings guoyJoe NO_USERID_VERIFIER_SALT 0438054C4F979EC5A5F74990346F5327, WORKLOAD_REPLAY_MODE bPREPARE implies external replay clients can connect; REPLAY implies workload replay is in progress, WORKLOAD_CAPTURE_MODE /CAPTURE implies workload capture is in progress, EXPORT_VIEWS_VERSION Export views revision #, DEFAULT_PERMANENT_TABLESPACE USERS$Name of default permanent tablespace, GLOBAL_DB_NAME PROD Global database name, NLS_RDBMS_VERSION 11.2.0.3.0 RDBMS version for NLS parameters, NLS_NCHAR_CHARACTERSET AL16UTF16 NCHAR Character set, NLS_NCHAR_CONV_EXCP FALSE NLS conversion exception, NLS_LENGTH_SEMANTICS BYTE NLS length semantics, NLS_COMP BINARY NLS comparison, NLS_DUAL_CURRENCY Dual currency symbol, NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZR Timestamp with timezone format, NLS_TIME_TZ_FORMAT HH.MI.SSXFF AM TZR Time with timezone format, NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM Time stamp format, NLS_TIME_FORMAT HH.MI.SSXFF AM Time format, NLS_SORT BINARY Linguistic definition, NLS_DATE_LANGUAGE AMERICAN Date language, NLS_DATE_FORMAT DD-MON-RR Date format, NLS_CALENDAR GREGORIAN Calendar system, NLS_CHARACTERSET ZHS16GBK Character set, NLS_NUMERIC_CHARACTERS Numeric characters, NLS_ISO_CURRENCY AMERICA ISO currency, NLS_CURRENCY Local currency, NLS_TERRITORY AMERICA Territory, NLS_LANGUAGE AMERICAN Language, DEFAULT_TBS_TYPE SMALLFILE Default tablespace type, DST_SECONDARY_TT_VERSION 0'Version of secondary timezone data file, DST_PRIMARY_TT_VERSION 14%Version of primary timezone data file, DST_UPGRADE_STATE NONE&State of Day Light Saving Time Upgrade, DBTIMEZONE +08:00 DB time zone, TDE_MASTER_KEY_ID, Flashback Timestamp TimeZone GMT"Flashback timestamp created in GMT, DEFAULT_EDITION ORA$BASE$Name of the database default edition, DEFAULT_PERMANENT_TABLESPACE SYSTEM$Name of default permanent tablespace, DEFAULT_TEMP_TABLESPACE TEMPTS$Name of default temporary tablespace, DICT.BASE 2 dictionary base tables version #
5、创建控制文件
sys@PROD> CREATE CONTROLFILE REUSE DATABASE "PROD" RESETLOGS ARCHIVELOG 2 MAXLOGFILES 32 3 MAXLOGMEMBERS 2 4 MAXDATAFILES 32 5 MAXINSTANCES 1 6 MAXLOGHISTORY 449 7 LOGFILE 8 GROUP 1 '/u01/app/oracle/oradata/PROD/redo01.log' SIZE 50M, 9 GROUP 2 '/u01/app/oracle/oradata/PROD/redo02.log' SIZE 50M, 10 GROUP 3 '/u01/app/oracle/oradata/PROD/redo03.log' SIZE 50M 11 DATAFILE 12 '/u01/app/oracle/oradata/PROD/system01.dbf', 13 '/u01/app/oracle/oradata/PROD/sysaux01.dbf', 14 '/u01/app/oracle/oradata/PROD/undotbs01.dbf', 15 '/u01/app/oracle/oradata/PROD/users01.dbf', 16 '/u01/app/oracle/oradata/PROD/tp01.dbf' 17 CHARACTER SET ZHS16GBK; Control file created.
sys@PROD> select count(*) from v$archived_log; COUNT(*) ---------- 0 sys@PROD> alter database register physical logfile '/arch/1_134_842976958.dbf'; Database altered. sys@PROD> alter database register physical logfile '/arch/1_135_842976958.dbf'; Database altered. sys@PROD> alter database register physical logfile '/arch/1_136_842976958.dbf'; Database altered. sys@PROD> alter database register physical logfile '/arch/1_137_842976958.dbf'; Database altered. sys@PROD> alter database register physical logfile '/arch/1_138_842976958.dbf'; Database altered. sys@PROD> select count(*) from v$archived_log; COUNT(*) ---------- 5
sys@PROD> select file#,checkpoint_change# from v$datafile; FILE# CHECKPOINT_CHANGE# ---------- ------------------ 1 1658759 2 1658739 3 1658788 4 1658802 5 1658774 sys@PROD> select file#,checkpoint_change# from v$datafile_header; FILE# CHECKPOINT_CHANGE# ---------- ------------------ 1 1658759 2 1658739 3 1658788 4 1658802 5 1658774
8、开始不完全恢复
sys@PROD> recover database using backup controlfile until cancel; ORA-00279: change 1658739 generated at 06/08/2014 06:01:29 needed for thread 1 ORA-00289: suggestion : /arch/1_134_842976958.dbf ORA-00280: change 1658739 for thread 1 is in sequence #134 Specify log: {<RET>=suggested | filename | AUTO | CANCEL} ORA-00279: change 1658838 generated at 06/08/2014 06:02:46 needed for thread 1 ORA-00289: suggestion : /arch/1_135_842976958.dbf ORA-00280: change 1658838 for thread 1 is in sequence #135 ORA-00278: log file '/arch/1_134_842976958.dbf' no longer needed for this recovery Specify log: {<RET>=suggested | filename | AUTO | CANCEL} ORA-00279: change 1658841 generated at 06/08/2014 06:02:47 needed for thread 1 ORA-00289: suggestion : /arch/1_136_842976958.dbf ORA-00280: change 1658841 for thread 1 is in sequence #136 ORA-00278: log file '/arch/1_135_842976958.dbf' no longer needed for this recovery Specify log: {<RET>=suggested | filename | AUTO | CANCEL} ORA-00279: change 1658844 generated at 06/08/2014 06:02:50 needed for thread 1 ORA-00289: suggestion : /arch/1_137_842976958.dbf ORA-00280: change 1658844 for thread 1 is in sequence #137 ORA-00278: log file '/arch/1_136_842976958.dbf' no longer needed for this recovery Specify log: {<RET>=suggested | filename | AUTO | CANCEL} ORA-00279: change 1658856 generated at 06/08/2014 06:03:17 needed for thread 1 ORA-00289: suggestion : /arch/1_138_842976958.dbf ORA-00280: change 1658856 for thread 1 is in sequence #138 ORA-00278: log file '/arch/1_137_842976958.dbf' no longer needed for this recovery Specify log: {<RET>=suggested | filename | AUTO | CANCEL} ORA-00279: change 1658859 generated at 06/08/2014 06:03:21 needed for thread 1 ORA-00289: suggestion : /arch/1_139_842976958.dbf ORA-00280: change 1658859 for thread 1 is in sequence #139 ORA-00278: log file '/arch/1_138_842976958.dbf' no longer needed for this recovery Specify log: {<RET>=suggested | filename | AUTO | CANCEL} cancel Media recovery cancelled.
9、再次查看数据文件头的检查点与控制文件的检查点是否一致
sys@PROD> select file#,checkpoint_change# from v$datafile; FILE# CHECKPOINT_CHANGE# ---------- ------------------ 1 1658859 2 1658859 3 1658859 4 1658859 5 1658859 sys@PROD> select file#,checkpoint_change# from v$datafile_header; FILE# CHECKPOINT_CHANGE# ---------- ------------------ 1 1658859 2 1658859 3 1658859 4 1658859 5 1658859
10、用resetlogs打开数据库
sys@PROD> alter database open resetlogs; Database altered. #########恢复完成

todropaviewinmysql、 "dropviewifexistsview_name;" andtomodifyaviewを使用して、 "createorreplaceviewview_nameasselect ..."を使用します

mysqlviewscanefectiveativeativeizedesignpatternslikeadapter、decorator、factory、andobserver.1)adapterpatternadaptsdatafromdifferenttablesintoaunifiedview.2)decoratorpatternenhancesdatawithedfieldsfieldsiffieldsiffieldsiffiedを

viewsinmysqlarebenefentialforsimprifiningcomplexqueries、拡張セキュリティ、ダタコンシーニング、および最適化されたパフォーマンスを保証する1)itsmplifyififycomplexqueriesbyencapsulsingthemintoreusableviews.2)viewsencurationecuritybycontrollingcescesces.3)

to CreateAsimpleviewinmysql、usethecreateviewstatement.1)DefinetheTheTheThecreateview_nameas.2)SpecifyTheSelectStatementtatementtatementtatementtatementtatementtatementedeSireddata.3)

tocleateusersinmysql、usethecreateuserstatement.1)foralocaluser:createUser'localuser '@' localhost'identifidedifiedifiedified 'securepassword';

mysqlviewshavelimitations:1)supportallsqloperations、制限、dataManipulationswithjoinsorubqueries.2)それらは、特にパフォーマンス、特にパルフェクソルラージャターセット

reperusermanmanagementInmysqliscialforenhancingsecurationsinginuring databaseaperation.1)usecreateusertoaddusers、指定connectionsourcewith@'localhost'or@'% '。

mysqldoes notimposeahardlimitontriggers、しかしpracticalfactorsdeTerminetheireffectiveuse:1)serverconufigurationStriggermanagement; 2)complentiggersincreaseSystemload;


ホットAIツール

Undresser.AI Undress
リアルなヌード写真を作成する AI 搭載アプリ

AI Clothes Remover
写真から衣服を削除するオンライン AI ツール。

Undress AI Tool
脱衣画像を無料で

Clothoff.io
AI衣類リムーバー

Video Face Swap
完全無料の AI 顔交換ツールを使用して、あらゆるビデオの顔を簡単に交換できます。

人気の記事

ホットツール

ZendStudio 13.5.1 Mac
強力な PHP 統合開発環境

SecLists
SecLists は、セキュリティ テスターの究極の相棒です。これは、セキュリティ評価中に頻繁に使用されるさまざまな種類のリストを 1 か所にまとめたものです。 SecLists は、セキュリティ テスターが必要とする可能性のあるすべてのリストを便利に提供することで、セキュリティ テストをより効率的かつ生産的にするのに役立ちます。リストの種類には、ユーザー名、パスワード、URL、ファジング ペイロード、機密データ パターン、Web シェルなどが含まれます。テスターはこのリポジトリを新しいテスト マシンにプルするだけで、必要なあらゆる種類のリストにアクセスできるようになります。

AtomエディタMac版ダウンロード
最も人気のあるオープンソースエディター

MinGW - Minimalist GNU for Windows
このプロジェクトは osdn.net/projects/mingw に移行中です。引き続きそこでフォローしていただけます。 MinGW: GNU Compiler Collection (GCC) のネイティブ Windows ポートであり、ネイティブ Windows アプリケーションを構築するための自由に配布可能なインポート ライブラリとヘッダー ファイルであり、C99 機能をサポートする MSVC ランタイムの拡張機能が含まれています。すべての MinGW ソフトウェアは 64 ビット Windows プラットフォームで実行できます。

MantisBT
Mantis は、製品の欠陥追跡を支援するために設計された、導入が簡単な Web ベースの欠陥追跡ツールです。 PHP、MySQL、Web サーバーが必要です。デモおよびホスティング サービスをチェックしてください。
