Oracle

Solution: SQL> Create undo tablespace tbs_undo datafile 'd: \ oracle \ product \ 10.2.0 \ oradata \ orcl \ undotbs02.dbf 'size 500 m; tablespace created. SQL> alter system set undo_tablespace = 'tbs _ undo 'scope = both; System altered. SQL> show

The default location of listener log files in UNIX systems is $ ORACLE_HOME/Network/log. In Windows, the default location of the listener log file is % ORACLE_HOME %/Network/log. The server trace file is usually located in % ORACLE_HOME

I. Object encoding Specification   Table T _/TBL _ or no prefix. View V _/V Sequence seq _ Cluster c _ Trigger trigger Trg _ Stored Procedure procedure SP _/P _/proc _ Function FN _/F _ Materialized View materialized view MV _

Paging is one of the common functions of software development. Of course, it can also be implemented using false pagination (full data extraction, paging at the front end, suitable for a small amount of data). However, real paging efficiency may be

Http://blog.csdn.net/wanglihuahaiyan/article/details/4381417 -------------------------------------------------- DotConnectOracle is a. net platform developed by Devart to access Oracle databases. Its Professional Edition is a paid version that

Check the listening status: C: \ Documents ents and Settings \ Administrator> lsnrctl status LSNRCTL for 32-bit Windows: Version 11.2.0.1.0-Production on-20120: 32 Copyright (c) 1991,201 0, Oracle. All rights reserved. Connecting to (DESCRIPTION =

The operating system is 32-bit Linux5.1: # Cat/etc/redhat-release # Red Hat Enterprise Linux ServerRelease 5.1 (Tikanga) DatabaseVersion 10.2.0.3.0: SQL> select * from v $ version; BANNER--------------------------------------------------------------

Oracle parameter files are critical to Oracle. No parameter file. Oracle cannot be started.Parameter files are dividedSpfile: The parameter file added after oracle9iR1. It is a binary file and cannot be edited directly.Pfile file, text file, can be

1. sid: site identifie) 2. spfile: Server parameter file, which stores parameter files 3. query the current value of the database parameter (see the Oracle database reference manual ): Select value from v $ parameter where name = 'pga _

In Oracle, the package is equivalent to a namespace. The package is created in two steps: 1. Create a Baotou 2. Create a package The package body and header creation must be separated and executed in the SQL window format, otherwise an Error occurs:

SelectDbf. file_name physical file name,Dbf. tablespace_name tablespace,Dbf. totalspace "Total (M )",Dbf. Total number of totalblocks as blocks,Dfs. freespace "total remaining amount (M )",Dfs. freeblocks "remaining blocks ",(Dfs. freespace/dbf.

Select "SQL _TEXT ", "SQL _FULLTEXT ", "SQL _ID ", "Sharable_mem ", "Persistent_men ", "Runtime_mem ", "Sorts ", "Loaded_versions ", "Open_versions ", "Users_opening ", "Fetches ", "Executions ", "Px_servers_executions ", "End_of_fetch_count

Today, Oracle10g is installed on RHEL. the following error message is displayed: Exception in thread "main" java. lang. unsatisfiedLinkError:/tmp/OraInstall2011-09-29_02-16-45AM/jre/1.4.2/lib/i386/libawt. so: libXp. so.6: cannot open shared object

Assume that, as shown in the following table, the number of rows corresponding to each I value is not fixed.SQL> select * from t; I A D---------------------------------------1 B 10:55:421 a 2008-03-27 10:55:461 d 10:55:302 z 2008-03-27 10:55:552 t 1

MySQL and Oracle are familiar to everyone. This article will give them a stress test. 1: Server Environment Operating System: Red Hat Enterprise Linux Server release 5.5 (Tikanga) CPU: Intel (R) Xeon (R) CPU E5607 @ 2.27 GHz 8-core Memory: 16

1. Some SQL statement differences (1) SQL: select top 10 * from tableORA: select * from table where rownum (2) SQL: Select * from t1 join t2 on t1.c1 = t2.c1ORA: select * from t1, t2 where t1.c1 = t2.c1(3) select * from t1 left join t2 on t1.c1 = t2.

For example, there is a personnel table (table name: peosons) If you want to query records whose names, ID card numbers, and addresses are identical Select p1 .* From persons p1, persons p2 Where p1.id <> p2.id And p1.cardid = p2.cardid and p1.pname

SQL> select u_dump.value | '/' | db_name.value | '_ ora _' | v $ process. spid | nvl2 (v $ process. traceid, '_' | v $ process. traceid, null) | '. trc '"Trace File" from v $ parameter u_dump cross join v $ parameter db_name cross join v $ process

Background process --- V $ BGPROCESS, which is an Oracle program used to manage the read/write, recovery, and monitoring of databases. Server Process communicates with user process and exchanges data with user process. On Unix machines, the Oracle

1. Oracle 10g & 9i and earlier Alert log locations: In Oracle 10g and 9i and earlier versions, alert log is located in ORACLE_BASE/admin/$ ORACLE_SID/bdump 1.1 view the database version: [oracle@czjie ~]$ sqlplus /nologSQL*Plus: Release 10.2.0.4.0 -