Oracle

Oracle's package packages can have a lot of storage, which can be called directly in Java via the package's total gateway.Java calls Oracle's package codepublic boolean cal () Java.lang.Exception {CallableStatement cstmt = null; String procedure = "

--First step, backup data--Step Two, delete the userCascade--Step three, create the userCreateUserIstaudit identifiedBy""Default Tablespace Istaudit--Default table SpaceTemporaryTablespace Istaudit_temp ProfileDEFAULT;--Grant/revoke role Privileges

Synonyms for OracleSynonyms are an alias for schema objects such as tables, indexes, and views. As with views, synonyms do not occupy any real storage space, only the description of their definitions in Oracle's data dictionary. When you use

I didn't understand when this business started.I thought it was a structure, or a package or a procedure,Later I think I want to understand the point, in fact, this business is just a thing I want to complete, this thing I do not finish, otherwise

There are two ETL business machines deployed PowerCenter in the production environment, and the recent discovery cannot connect to the ETL service through the client.The initial suspicion is that the powercenter is dead or the database has

After oracle11g, the user can create a temporary tablespace group that can contain one or more temporary table spaces in a temporary table space group.A temporary table space group must consist of at least one temporary tablespace and no explicit

OEMs are a graphical database administrator tool. It provides a centralized system administration tool for database administrators, as well as a tool for managing, diagnosing, and debugging multiple databases, a tool for managing multiple network

Dblink's primary role is data access between two databases (1) Global_name View select * from Global_name; (2) View local global_names parameters show parameter Global_ Namesname TYPE VALUE-------------------------------------------------------------

Oracle provides a inverted inverted function reverse, but this function cannot be grouped upside down, this article provides a function that can be grouped upside down, as follows:CREATE OR REPLACE FUNCTION reverse_f (p_str VARCHAR2, P_delimiter

Statistical information Collection1: Create Analysis Table$ cd $ORACLE _home/rdbms/admin$ sqlplus/as SYSDBA > @utlxplan. SQL2: For convenience, you can create a synonym table ( by default only the SYS user can use )sql> create public synonym

Union and UNION ALL Select Deptno from empUnionSelect Deptno from dept;Equivalent to the two result sets, union removes the duplicate, union all retains the duplicate2. IntersectSelect Deptno from empIntersectSelect Deptno from dept;This

"Turn from" http://www.cnblogs.com/netsql/articles/1745978.htmlNote the point:1. If it is opened in a tool such as PL/SQL, directly modify the following code [ Italic bold section] to execute2. Ensure that the path exists, such as

--View disk statements that consume the most disk read and write ratesSELECT *From (select v.sql_id,V.child_number,V.sql_text,V.elapsed_time,V.cpu_time,V.disk_reads,Rank () Over (order by v.disk_reads Desc) Elapsed_rankFrom V$sql v) awhere

Prerequisite: You must have DBA authority and have permission to query tablespace usage--View Table space usageSelect UPPER (f.tablespace_name) "Table space name",D.TOT_GROOTTE_MB "Table space size (M)",D.tot_grootte_mb-f.total_bytes "used Space (M)"

Maintenance principle of Big data scale 1. If this table is often crud, the best way is to regularly collect statistics to pass to the Oracle optimizer for improved performance. For example, the Dbms_stats.gather_table_stats command. Can be

Can't login em, execute emca-config dbcontrol db do not know always default 1522 port number, helpless, Google some, from the second step below to start execution ... (My monitor is fine)1. Open the net config Assistant in the Oracle Configuration

[Lone sword] Oracle knowledge point sorting (1) Table space, users, and oracle knowledge pointsLink navigation for this series: [Lone sword] Oracle knowledge point sorting (1) Table space and users [Gu JIU Jian] Oracle knowledge point sorting (2)

Oracle Instant Client InstantClient for convenient use of PLSQLDeveloper Method Background: Oracle-32bit clients are not installed in 64-bit operating systems for ease of use of PLSQL Developer (64bit Oracle clients not supported)1. Download the

[Ubuntu14.04] Build a PHP5 + Apache2 + Oracle environment RT A recently developed project where the database uses oracle. Oracle itself supports Red Hat, which is not good for ubuntu. If ubuntu needs to install oracle, the system itself needs to do

Oracle Spool commands Run the spool command to copy the output results of SQL * plus to a specified file or query the results. Send to the printer and use the spool off command until it is executed.The spool command syntax is as follows: Spool