tailieunhanh - OCA /OCP Oracle Database 11g A ll-in-One Exam Guide- P90

OCA /OCP Oracle Database 11g A ll-in-One Exam Guide- P90:There is an ever increasing demand for staff with IT industry certification. The benefits to employers are significant—they can be certain that staff have a certain level of competence—and the benefits to the individuals, in terms of demand for their services, are equally great. Many employers are now requiring technical staff to have certifications, and many IT purchasers will not buy from firms that do not have certified staff. | OCA OCP Oracle Database 11g All-in-One Exam Guide 846 section. From the Transport Tablespaces window you can launch either a wizard to generate a set of files the Data Pump dump file and copies of the datafiles that can be moved to another database or a wizard to integrate a previously created set of files into the database. Tablespaces can also be transported using RMAN RMAN can extract the necessary datafiles from a backup if necessary or by using the impdp and expdp utilities. When transporting tablespaces there are certain restrictions The tablespace s should be self-contained. This means that the objects within the tablespace s must be complete not dependent on any other objects. For instance if tables are in one tablespace and indexes on the tables in another both tablespaces must be included in the set to be transported. The destination database must use the same or a compatible character set as the source database. The schemas that own the objects in the tablespace s must exist in the destination database or the operation will fail. Any objects in the destination database with the same owner and object name as objects in the transportable tablespace set will not be lost they will be ignored during the import. A tablespace of the same name must not already exist. Remember that is possible to rename tablespaces. Figure 23-3 shows the steps to generate a transport set. In Figure 23-3 the first command is the PL SQL procedure call to confirm that a set of tablespaces in the example just one tablepsace TS1 is self-contained. Then the tablespace is made read only. The Data Pump job launched with the expdp Figure 23-3 Using command-line utilities to create a transportable tablespace set Chapter 23 Moving and Reorganizing Data 847 command-line utility connects as user SYSTEM and then specifies the tablespace to be transported. This will generate a dump file with metadata describing the contents of the TS1 tablespace in the Oracle directory DP_OUT. Then while the .

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