Database Administrator

Address of the server where the Oracle database is located: 192.168.3.67 Default port: 1521 Service name: OA10 Modify the tnsnames. ora file in the oracle \ ora92 \ network \ admin directory # TNSNAMES. ORA Network Configuration File: D: \ oracle

In Hibernate, the corresponding file column type can be org. springframework. orm. hibernate3.support. BlobByteArrayType,Org. springframework. orm. hibernate3.support. ClobStringType, clob, blob, and binary. When to use BlobBYteArrayTypeWhen should

When the system is unable to log on, the initial judgment may be that the database connection is full (this is not the reason for later check), and the maximum number of connections to the database is increased. The procedure is as

Oracle uses the table () function to replace the result set returned by PL/SQL. 1. table () combined with Arrays: Create or replace type t_test as object (Id integer,Rq date,Mc varchar2 (60)); Create or replace type t_test_table as table of

Business Needs: I created a table named t_0_mtbuf in Oracle and created it using a statement for creating a common table. In fact, this table serves as a temporary table, namely: In java, select 1500 entries each time, insert them into the sqlserver

Why Oracle ORA-4031 errors occur First, this error occurs as follows: ORA-04031: unable to allocate XXXX bytes of shared memory ("Shared pool," unknown object "," sga heap () "," obj stat memor ") That is, the basic query of simple dynamic

A bank's R & D department has purchased a new IBM HS22 blade server. It needs to install a linux system on it, remotely use Telnet and FTP services internally, and install the Oracle database.Hardware environment:IBM HS22 Blade ServerSystem software:

When exporting and importing Oracle databases, the following error is reported during the import of exported data to the new database: View information about external tables in the database:Select * from dba_directoriesSelect * from select * from

Scope sid) When alter system set parameter: Syntax: alter system set parameter = value scope = (both (default), spfile, memory) sid = sid | * (default *) COMMENT [Sid]: Used to set parameters for an instance of any node in rac. The default

1. Create a test table and data first,CREATE TABLE EMPSelect level EMPL_ID,(MOD (ROWNUM, 20) + 1) DEPT_ID,SUBSTR (DBMS_RANDOM.STRING ('x', DBMS_RANDOM.VALUE (20, 50), 0, 10) EMPNAME,TRUNC (DBMS_RANDOM.VALUE (1000,500 000), 2) SALARY,DECODE (ROUND

During Hibernate initialization, the SQL statements configured as table predefines insert, delete, update, and select (by id) are placed in the session by default, where insert, update, select operations are performed on all fields in the table. if

1. Create CREATE [or replace] [] VIEW [database.] [()]AS []Example: Create view 'view _ articles'ASSELECTA. id AS id,A. title AS title,A. content AS content,T. name AS tagname,U. firstname AS "username"FROM 'articles'aLeft join 'tags' tON a.

Today, I am going to process a piece of data and discover a problem in the Oracle sequence. I am prepared to clarify this problem in the spirit of discovering, solving, and asking the root question.   Problems and phenomena: For sequences, seq is

Load dataThe usage is as follows: Load data [LOW_PRIORITY | CONCURRENT] [LOCAL] INFILE 'file_name.txt' [REPLACE | IGNORE] INTO TABLE Tbl_name [FIELDS//Field [Terminated by 'string']//FieldRoomDelimiter [[OPTIONALLY] enclosed by 'Char ']//Including

It is mainly used to record the rowid uniqueness of rows in Oracle. Remove duplicate records (pay attention to multiple executions until the impact record is 0 rows) Delete from WBH_TEMP2 where terminal_id in ( Select terminal_id from WBH_TEMP2

Step 1: Download and decompress the sqlite source code package > Wget http://www.sqlite.org/sqlite-3.6.16.tar.gz > Tar-zxvf sqlite-3.6.16.tar.gz Step 2: Install >./Configure-disable-tcl > Make > Make install Step 3: write code for testing > Vim

[Old system] When the data volume of a table in Oracle9i database exceeds 0.1 billion, the web page remains blank for a long time when the table is queried recently. Therefore, optimize the table. The optimization plan is as follows: 1. Create a

Oracle learning Dynamic Performance Table v $ locked_object This view lists all the locks obtained by each transaction on the system. Description of columns in V $ LOCKED_OBJECT: XIDUSN: rollback segment numberXIDSLOT: Slot NumberXIDSQN: serial

79Adump 4717Bdump 2572945Cdump 0Dpdump 0Pfile 22310Scripts 32879Udump Search for other people's SolutionsDirectly delete files starting with "a" from bdump.Remove files under cdumpHow can cdump increase rapidly? Appendix:Recently, the company

Solution: cp/usr/share/mysql/my-medium.cnf/etc/my. cnf; Edit: Add two encoding variables. [Client] Default-character-set = gbk [Mysqld] Character_set_server = gbk Datadir =/var/lib/mysql Socket =/var/lib/mysql. sock After the preceding settings,