oracle rdbms

Tags: persistent storage means user brings art hat technical integrityOverviewThe traditional relational database and data warehouse are becoming more and more incompetent in the face of big data processing. Because the design of a relational database management system (RDBMS) has never considered the ability to handle ever-increasing and well-formed data, and the explosive growth in user demand for data access and analysis. They are generally a fixed

Label:First, the distributed domain cap theory The cap theorem refers to the three attributes of consistency (consistent), availability (availability), reliability (partition tolerance partition tolerance) when designing a distributed system, which is also known as the Brewer's theorem. The cap theorem clarifies the limitations of the system that can be implemented by a distributed system, and many distributed systems in the Internet are designed based on the primary satisfaction of usability an

The process of an RDBMSThe entire process of RDBMS processing user requests is as follows:650) this.width=650; "title=" Rdbms.png "src=" http://s3.51cto.com/wyfs02/M00/4F/E8/ Wkiom1rh9q7duc4eaaii8vr5skm680.jpg "alt=" Wkiom1rh9q7duc4eaaii8vr5skm680.jpg "/>1, when the user requests data query and other operations, the first to establish a connection with the database server. Therefore, the Connection Manager is preferred and the connection is establishe

(ClassNotFoundException e) {e. printStackTrace ();} try {conn = DriverManager. getConnection (url, "root", "root");} catch (SQLException e) {e. printStackTrace ();} super. setup (context);} public void reduce (Text key, Iterable Values, Context context) throws IOException, InterruptedException {StringBuffer sb = new StringBuffer (); for (Text text: values) {sb. append (text. toString ();} try {Statement st = conn. createStatement (); st.exe cuteUpdate ("insert into test_mapreduce (id

The difference between hbase and traditional relational databasesHBase is suitable for databases with unstructured data stores. A data storage method between the map Entry and the DB row.1. Data type: HBase only the simple string type, it only saves the string all types are handed to the user to handle. Relational databases can select types2. Data manipulation: HBase operation only very simple insert, query and other operations, the table is separated from the table, there is no join3. Storage m

How BI projects are developed:Learn how OLAP is analyzed:Multidimensional modeling analysis of data, that is, the design of their own data, then the program automatically generate the data of the square bodyData side body:1. Automatic table structure, only the columns you need2. Generate an SQL statement (with query criteria)3. Cache sql, through your pre-defined multidimensional analysis, establish the relationship between the fact table and the dimension table, generate SQL is the cache SQL, a

alert log is as follows: Nov 14 12:33:12 2014 Errors in file d: \ oracle \ diag \ rdbms \ orcl \ trace \ orcl_m0000001704.trc (incident = 60577): ORA-00700: soft internal error, arguments: [dbgrfrbf_1], [d: \ oracle \ diag \ rdbms \ orcl \ metadata \ INC_METER_INFO.ams], [16], [1], [], [], [], [], [], [], [], [], [] O

A netizen's database is deployed in a windows environment. It may be due to storage problems or windows file system problems. After I/O problems occur, the database cannot be started after it is restarted, when an error is reported, several files cannot be read. The alert log is as follows:Nov 14 12:33:12 2014Errors in file d: \ oracle \ diag \ rdbms \ orcl \ trace \ orcl_m0000001704.trc (incident = 605

@ rh6 ~] $ Sqlplus '/as sysdba' SQL * Plus: Release 11.2.0.1.0 Production on Wed May 21 10:59:58 2014 Copyright (c) 1982,200 9, Oracle. All rights reserved. Connected to an idle instance. 10:59:59 SYS @ test1> startup nomounted; ORACLE instance started. Total System Global Area 417546240 bytes Fixed Size 2213936 bytes Variable Size 268437456 bytes Database Buffers 142606336 bytes Redo Buffers 4288512 bytes

A customer qq found me and said that a friend recommended me to help them restore the database. Due to the forced shutdown, the database could not start normally. Database recover database failed Mon Mar 28 10:20:33 2016 ALTER DATABASE RECOVER database Media Recovery Start started logmerger process Parallel Media Recovery started with 32 slaves Mon Mar 28 10:20:36 2016 Recovery of Online Redo Log: Thread 1 Group 2 Seq 18686 Reading mem 0 Mem # 0: E: \ ORACLE_DATA \ YCCY \ REDO02.LOG Recovery of

installation package mainly completes the following tasks: Automatically downloads and installany additional RPM packages needed for installing Oracle Grid Infrastructure and Oracle Database, and resolves any dependencies Creates an oracle user, and creates the oraInventory (oinstall) and OSDBA (dba) groups for that user As needed, sets sysctl. conf setting

: YBacking up files...Applying sub-patch '000000' to oh'/opt/oracle/product/11gR2/db' Patching component oracle. rdbms. rsf, 11.2.0.3.0... Patching component oracle. rdbms, 11.2.0.3.0... Patching component oracle.

Installing Oracle Block Browser and Editor tool (bbed), installingbbedBBED is an internal ORACLE tool. Generally, BBED is used to restore faulty databases, for example, if the data file header is inconsistent due to power failure or abnormal shutdown of the operating SYSTEM, or the SYSTEM tablespace is damaged, you can use the BBED tool for recovery. The following error is usually reported during compilatio

Oracle configuration database diagnostics Environment: RHEL 6.4 + Oracle 11.2.0.4 1. Set ADR2. Use Support Workbench3. Restore Block Media1. Set ADR1.1 to view v $ diag_info Viewv$diag_infoDiagnostic database information: col value for a70col name for a35set linesize 140select * from v$diag_info;SQL> select * from v$diag_info; INST_ID NAME VALUE---------- -------------------

Recover Database Report ORA-600 3020 The code is as follows Copy Code Recovery of Online Redo log:thread 1 Group 2 Seq 5729 Reading mem 0mem# 0:e:\oracle\oradata\yygdb\redo02.logTue Aug 19 19:37:29 2014Errors in File D:\oracle\diag\rdbms\yygdb\yygdb\trace\yygdb_pr0s_4296.trc (incident=39403):Ora-00600:internal error code, arguments: [30

, but they didn't know what kind of products they could develop. Oates first saw Edgar Cauter's famous paper, along with several other related articles, and recommended Ellison and miner to read it. Ellison and miner foresaw the great potential of the database software (followed by IBM, yes), so SDL began planning to build a commercially available relational database management system (RDBMS). Soon they'll get a less-than-decent product, or, more spe

trace file/u01/app/oracle/diag/rdbms/oa/oa/trace/oa_dbw2_4158.trcCorrupt block relative dba:0x00816ad9 (file 2, block 92889)Bad header found during preparing blocks for writeData in bad block:type:0 format:0 rdba:0x6ad90000Last Change scn:0x0000.00c6a052 seq:0x1 flg:0x00spare1:0x6 Spare2:0xa2 spare3:0x5d7eConsistency value in tail:0xa0520001Check value in block header:0x0Block checksum disabledMon Mar 02 1

Tags: Oracle database LinuxInstalling the Oracle database silently on Linux [Email protected] ~]# cat/etc/oracle-release Oracle Linux Server Release 7.0 [Email protected] ~]# cat/etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 192.168.1.7 THDLDB01 [[Email protected] ~] #yum Inst

------- ------------------ --------- --- ----------------ONLINE 8932792 01-nov-16 NO 2ONLINE 8933048 01-nov-16 NO 4sql> ALTER DATABASE open resetlogs;Database altered.Alert Log InformationTue Nov 01 21:29:56 2016ALTER DATABASE open ResetlogsErrors in FILE/OPT/ORACLE/DIAG/RDBMS/TEST/TEST/TRACE/TEST_ORA_14479.TRC:Ora-00313:open failed for members of log Group 1 of thread 1Ora-00312:online Log 1 Thread 1: '/ho

Compiling bbed and 11.2.0.4bbed in Oracle db 11.2.0.4 in linux 6.3 From: http://blog.csdn.net/inthirties/article/details/5558030 Environment: Oracle db 11.2.0.4, rhel 6.3 x86-64bit The following files required for compiling bbed in 11.2.0.4 (11gR2: Sbbdpt. o from: $ ORACLE_HOME/lib of Oracle db 10.2.0.5 under rhel5.8 x86-64bit Ssbbded. o Source: