oracle recover datafile

Label:Refer to MOS article:Unable to Drop a datafile from the tablespace Using Alter tablespace Command (document ID 1050261.1)Any of the following conditions cannot be datafile by a drop1) must be empty, otherwise it will be reported: Ora-03262:the file is non-empty. It is important to note that the meaning of non-empty is that there is a extent assigned to table instead of rows in the table.If you do not

1. DUMP DatafileBlock example There are three types of SCN in a data block of Oracle: The Block header SCN, the CSC (cleanout SCN) and the commit SCN recorded in ITL. If we want to view the content of a block or some blocks, we can dump these blocks to view them. The dump method is described in the previous article: Oracle rdba and dba description Effece ITL (Interested Transaction List) Description Query

Tags: order margin fast BAE data param code BSP BER databae = physical files, logical structures that compose physical files View database name Sql> Show Parameter Db_nam NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ Db_name string Gaga01 Sql> select name from V$database; NAME --------- GAGA01 Sql> To view the instance name: Sql> Show Parameter Instance_n NAME TYPE VALUE ------------------------------------ ----------- ---

In oracle database, a datafile can be dropped, databasedatafile Refer to the mos article:Unable to Drop a Datafile From the Tablespace Using Alter Tablespace Command (Document ID 1050261.1) This datafile cannot be dropped because of any of the following conditions: 1) It must be null, otherwise it will report: ORA-0326

Conditions in Oracle databases where a datafile can be dropped Conditions in Oracle databases where a datafile can be dropped Refer to the mos article:Unable to Drop a Datafile From the Tablespace Using Alter Tablespace Command (Document ID 1050261.1) This

-Production onTue FebTen -: -: the -Copyright (c)1982,2005, Oracle. AllRights reserved.connected toTargetDatabase: ORA11 (DBID=723822444) RMAN> shutdownimmediate;using TargetDatabaseControlfileinstead ofRecovery CatalogDatabaseclosedDatabasedismountedoracle instance shut Downrman>Startup mount;connected toTargetDatabase( notstarted) Oracle instance startedDatabasemountedtotal System Global Area1071333376

1. DUMP DatafileBlock example There are three types of SCN in a data block of Oracle: The Block header SCN, the CSC (cleanout SCN) and the commit SCN recorded in ITL. If we want to view the content of a block or some blocks, we can dump these blocks to view them. The dump method is described in the previous blog: Oracle rdba and dba descriptionInclueitl (Interested Transaction List) Description Query the co

Today to increase the data file, the database file name more than one point, although it can be used, but in the operating system to see the file but feel very uncomfortable, check some data, modify the method summarized as follows: 1. Close the database Sqlplus/nolog SHUTDOWN; 2. Renaming data files in the operating system 3. Loading the database, modifying the database file name in Oracle Sqlplus/nolog START MOUNT; ALTER DATABASE RENAME FILE

Tags: blog http ar sp file data art Log HTMLV$datafile is information about data files obtained from Oracle's control filesV$datafile_header is from the head of the data fileUnder normal operation, the checkpoint SCN values for both are consistent, but when the datafile is damaged you can use V$datafile_header to determine the starting SCN for the application redo, and v$

Case 1: Database most datafile lost (recover db, must be under mount) 1) test environment 07:21:12 sql> Conn Scott/tiger Connected. 07:21:16 sql> 07:21:16 sql> SELECT * from tab; Tname Tabtype Clusterid ------------------------------ ------- ---------- DEPT TABLE EMP TABLE BONUS TABLE Salgrade TABLE SYS_TEMP_FBT TABLE TEST TABLE EMP1 TABLE 7 rows selected. 07:21:20 sql> SELECT * from test;