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There is another option to mix compilation models within a single source file that is also not recommended functions that use Visual C++ language features that cannot be mapped to IL code are automatically compiled to native code. Code that uses inline assembly, like the one following, is an obvious example for code that is not mappable: __asm mov eax, 0; Since the IL instruction set does not know about the eax register, the complier cannot map these instructions to IL instructions. A few other language features of Visual C++ cannot be mapped to IL, either. These include setjmp, longjmp, and processor intrinsics like _ReturnAddress and _AddressOfReturnAddress. When the compiler automatically switches to the native compilation model, it reports warning 4793. You should handle this warning by moving the function to a source file that is compiled to native code.

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Finally, we notify the user that the password will expire in the determined number of days. Please recall that if the DEBUG_EMAIL variable is not null, notifications will be sent only to the debug address specified in the configuration section. Only when this variable is null will notifications be sent to the specified user. This is handled in the send_email script called earlier; it also checks whether the debug e-mail address has been set. At a first glance it may seem that the notifications should always be sent to the user, but this is not the case. (The send_email script is not included here, but it should be simple to implement.)

If you are upgrading an older database to the Oracle Database 10g release, you may want to migrate your tablespaces from being dictionary managed to locally managed You can simply create new tablespaces, which will be locally managed by default, and then migrate all your tables to the new tablespaces using the ALTER TABLE command, as shown here: SQL> ALTER TABLE emp MOVE TABLESPACE tbsp_new; In order to move your indexes, use the ALTER INDEX REBUILD command, as shown here: SQL> ALTER INDEX emp_pk_idx REBUILD TABLESPACE tbsp_idx_new Once you finish migrating all your objects to the new locally managed tablespaces, drop your old tablespaces to reclaim the space If you don t want to create new tablespaces and go through the trouble of migrating all tables and indexes, you can use the PL/SQL package DBMS_SPACE_ADMIN, which enables you to perform the tablespace migration.

You first need to migrate all the other tablespaces to a local management mode before you migrate the System tablespace If you migrate your System tablespace from dictionary-managed to locally managed first, all other tablespaces become read-only Make sure that you first take a cold backup of the database before performing the tablespace migration Here s an example of how you can migrate a dictionary-managed tablespace (USERS) to a locally managed tablespace: SQL> EXECUTE dbms_space_admintablespace_migrate_to_local ('USERS'); The TABLESPACE_MIGRATE_TO_LOCAL procedure can be used online, while users are selecting and modifying data However, if the DML operations need a new extent to be allocated, the operations will be blocked until the migration is completed Once you ve migrated all your other tablespaces to locally managed tablespaces, you can move the System tablespace.

Here s the command (you ll have to perform a few housekeeping chores beforehand, like making other tablespaces read only, etc): SQL> EXECUTE dbms_space_admintablespace_migrate_to_local ('SYSTEM'); Note that if you use the DBMS_SPACE_ADMIN package to migrate from dictionary-managed to locally managed tablespaces, you won t have the option of switching to the new Automatic Segment Space Management All dictionary-managed tablespaces use the older manual segment space management by default, and you can t change to Automatic Segment Space Management when you migrate to locally managed tablespaces Since Automatic Segment Space Management offers so many benefits (such as the ability to use the Online Segment Shrink capability of the Segment Advisor), you probably are better off biting the bullet and planning the migration of all your objects to newly created locally managed tablespaces By default, Oracle creates all new tablespaces as locally managed with automatic segment space management.

In addition, if your current dictionary-managed tablespaces have a space fragmentation problem, the problem won t disappear when you convert to locally managed tablespaces by using an in-place migration with the DBMS_SPACE_ADMIN package Again, you re better off creating a new locally managed tablespace and moving your objects into it 17 shows how to perform such migrations easily, using Oracle s online table reorganization features..

In the following example the password has expired and the account needs to be locked. We first set some variables in anticipation of changing the user s password to a CLOSED string showing the date on which the user account was locked, as described earlier.