They offer increased functionality (for example, global package variables can be declared and used by any procedure in the package). They also improve performance (for example, all objects of the package are pa
创建一个没有包体包CREATE OR REPLACE PACKAGE global_consts ISmile_2_kilo CONSTANT NUMBER := 1.6093;kilo_2_mile CONSTANT NUMBER := 0.6214;yard_2_meter CONSTANT NUMBER := 0.9144;meter_2_yard CONSTANT NUMBER := 1.0936;END global_consts;执行 SQL>EXECUTE DBMS_OUTPUT.PUT_LINE('20 miles = '||2...
Furthermore, you can use a local variable when inside a tight loop or branch of code that is not sensitive to a context switch for the life of the branch. This avoids accessing a package global variable, which is more expensive than a local variable. See the following example: ...
Oracle Java 是第一大编程语言和开发平台。它有助于企业降低成本、缩短开发周期、推动创新以及改善应用程序服务。Java 现在仍是企业和开发人员的首选开发平台。 用于运行桌面应用程序的 Java 面向使用台式机和笔记本电脑的最终用户 下载适用于台式机的 Java
You must use either the DBMS_LOB PL/SQL built-in package or the OCI interface to actually manipulate the data in a LOB. To facilitate the conversion of LONG datatypes to LOBs, Oracle9i included support for LOBs in most functions that support LONGs, as well as an option to the ALTER ...
ORACLE_HOME Used to set ORACLE_HOME environment variable to the Oracle libraries required by the DBD::Oracle Perl module. ORACLE_DSN This directive is used to set the data source name in the form standard DBI DSN. For example: dbi:Oracle:host=oradb_host.myhost.com;sid=DB_SID;port=1521 ...
As an Oracle Net keyword-value pair. For example: "(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp) (HOST=dlsun242) (PORT=5521)) (CONNECT_DATA=(SERVICE_NAME=bjava21)))" Naming methods that require TNS_ADMIN to locate configuration files continue to work if the TNS_ADMIN environment variable is set....
If the destination link of a job is an Oracle database link, configure the destination job parameters based on Table 1. Table 1 Parameter description Type Description Example Value Basic parameters Schema/Tablespace Name of the database to which data will be written. The schema can be ...
The following example asks if the user wants to continue, reads a variable named doContinue from the command line, and evaluates what the user entered. If the user enters anything other than “y,” that person is informed that the script is “quitting” and it exits without executing the ...
The %ORACLE_HOME% variable should be set to refer to the installation point you specified when you installed the client networking software. The %PATH% must include the %ORACLE_HOME% \bin directory as the first Oracle entry that is encountered. For information about setting environment variables...