Database Administrator

Prerequisites for restoring a tablespace without backup: 1. Data from the tablespace creation time to the deletion time period must be archived. 2. The reason for the control file is that the tablespace is not damaged. SQL> connect

1. Client hosts file Configuration:10.19.65.167 sdwgrac1-vip10.19.65.169 sdwgrac2-vipNote: The unix platform is/etc/hosts, and the windows platform is C: \ Windows \ System32 \ drivers \ etc \ hosts. 2. Client tnsnames. ora Configuration:EOMS

Logmnr has made many improvements after Oracle 9i. If you do not need to build a flat text file, you can analyze the log, which means you can analyze the log without modifying the utl_file_dir parameter, the problem of restarting the database caused

Oracle query lock: Select a. OWNER solution name,A. OBJECT_NAME table name,B. XIDUSN rollback segment number,B. XIDSLOT slot number,B. XIDSQN serial number,B. SESSION_ID lock table SESSION_ID,B. username of the ORACLE_USERNAME lock table,Decode (D.

1. Modify the dbstart script:$ Vi $ Oracle_HOME/bin/dbstart# ORACLE_HOME_LISTNER =/ade/vikrkuma_new/oracleORACLE_HOME_LISTNER = $ ORACLE_HOME 2. Modify/etc/oratab in the following format:$ Vi/etc/oratabSID: $ ORACLE_HOME: Y3. Modify/etc/rc. local to

Oracle introduced the flash recovery area concept in 10 Gb to simplify and improve backup. However, the flash recovery area also needs to be carefully planned and configured. Otherwise, problems may occur, from Oracle10gR2, Oracle also provides a

Keywords: 1. UNION: UNION. All content is queried and displayed once again; 2. union all: UNION set. ALL content is displayed, including duplicate content; 3. INTERSECT: intersection. Only duplicate items are displayed; 4. MINUS: The difference set,

Table type variables, also known as index_by tables or PL/SQL tables, are different from data tables and are similar to the two column structures of the keys and values of arrays. The syntax is as follows: Type table type name is table of type index

Installing Oracle in Linux is not that difficult, but I have been installing it for three days. I am using Linux5 to install Oracle 10G, SO. The tragedy has emerged and the software environment is not supported. Here is a tips, but it should be

For the basic installation process, refer to some installation instructions on the Internet. To describe the Linux configurations during the installation process, configure the. bash_profile in the Oracle user directory. Post the. bash_profile

Because there is no hardware environment, two mysql databases are compiled and installed in the Linux of the virtual machine, one as the master and the other as the slave, install them in/home/jhw/mysql and/home/jhw/mysql2 respectively. By default,

The source code version of ghost, so far there is no ubuntu installation source, I am not very familiar with rpm, so I can only compile the source code to install, refer to the online compilation and installation options, tried several times,

Ora-01102 error occurred when starting after Oracle database is installed.Oracle@r05a11016.yh.com:/home/oracle> sqlplus "/as sysdba"SQL * Plus: Release 11.2.0.2.0 Production on Fri Apr 15 16:17:39 2011Copyright (c) 1982,201 0, Oracle. All rights

Although I have written a lot of SQL statements on Oracle before, I didn't take the time to study Oracle systematically. Practice is important, but there is no theoretical standard to learn and understand, in practice, you cannot write SQL

Developers need to convert a string to the nvarchar2 type. But the test is garbled. The example is as follows: SQL> select (selectutl_raw.cast_to_nvarchar2 (utl_raw.cast_to_raw ('I am nvarchar2string') from dual; (SELECTUTL_RAW.CAST_TO_NVARCHAR2

Yesterday afternoon, logical standby suddenly failed to apply. The database reported the following error: Warning: Apply error received: ORA-26714: User error encountered while applying. Clearing. * ** 2010-03-16 20:04:48. 484 Knahcapplymain:

09:29:47, 309 [HTTPThreadGroup-5] ERROR eml. OMSHandshake processFailure.808-OMSHandshake failed. (agent url = https: // szpms1: 1830/emd/main) (ERROR = INTERNAL_ERROR) (CAUSE = java. SQL. SQLException: ORA-28000: the account is locked09:29:47, 856 [

In Oracle, when executing expdp or impdp, sometimes an error occurs: ORA-39002: invalid operation. ORA-39070: Unable to open the log file. ORA-29283: invalid file operation ORA-06512: at "SYS. UTL_FILE", line 536 ORA-29283: invalid file

CentOS MySQL Server installation and configuration There are three installation methods for installing the Mysql program:1. Direct Network installation;2. Download the rpm package and upload it to the server for installation;3. Compile and install

Oracle archiving Mode 1. Check whether the oracle database is in archive mode: 1. select name, log_mode from v $ database; NAME LOG_MODE------------------------------------------QUERY NOARCHIVELOG   2. Use the archive log list Command Database log