When you create database users, you must assign a default temporary tablespace in which they can perform their temporary work, such as sorting. If you neglect to explicitly assign a temporary tablespace, the users will use the critical System tablespace as their temporary tablespace, which could lead to fragmentation of that tablespace, besides filling it up and freezing database activity. You can avoid these undesirable situations by creating a default temporary tablespace for the database when creating a database by using the DEFAULT TEMPORARY TABLESPACE clause. Oracle will then use this as the temporary tablespace for all users for whom you don t explicitly assign a temporary tablespace. I show the creation of the default temporary tablespace in 9, where I explain how to create a new Oracle database. Note that if you didn t create a default temporary tablespace while creating your database, it isn t too late to do so later. You can just create a temporary tablespace, as shown in the preceding example, and make it the default temporary tablespace for the database, with a statement like this: SQL> ALTER TABLESPACE DEFAULT TEMPORARY TABLESPACE temptbs02;

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You can t use the AUTOALLOCATE clause for temporary tablespaces. By default, all temporary tablespaces are created with locally managed extents of a uniform size. The default extent size is 1MB, as for all other tablespaces, but you can use a different extent size if you wish when creating the temporary tablespace.

seconds_since_epoch=`$PERL -e 'print time'` seconds_per_day=$((60*60*24)) days_since_epoch=$(($seconds_since_epoch/$seconds_per_day))

To take full advantage of the Resumable Space Allocation feature, you should use locally managed tablespaces coupled with Automatic Undo Management.

You can explicitly make operations run in the Resumable Space Allocation mode by using the ALTER SESSION command. The Resumable Space Allocation feature will just suspend operations until the problem is fixed (such as by you adding a data file to extend space) and it will resume automatically after that.

The following types of database operations are resumable: Queries: These operations can always be resumed after they run out of temporary sorting space. DML operations: Insert, update, and delete operations can be resumed after an error is issued. DDL operations: Index operations involving creating, rebuilding, and altering are resumable, as are CREATE TABLE AS SELECT operations and several other DDL operations. Import and export operations: SQL*Loader data load jobs that run out of space are resumable. You must use the RESUMABLE parameter when you specify the SQL*Loader job, to make the operation resumable. Two other resumable operation parameters, RESUMABLE_TIMEOUT and RESUMABLE_NAME, can be set only if you set the RESUMABLE parameter.

You can resume operations after fixing any of the following types of errors during the execution of any operation: Out of space errors: Typically, operations fail when you can t add extents to your tables or indexes because the tablespace is full. You need to add a data file to your tablespace to enable the objects to throw a new extent and continue to grow. The typical error message is ORA-01653. Maximum extents errors: When a table or a rollback segment reaches the maximum extents specified, it can t grow any further, even if you have space in the tablespace. You end up with errors such as ORA-01628. User s space quota errors: If the user s quota on a tablespace is exceeded, your operations on that tablespace will come to a halt. The typical Oracle error is ORA-01536.

In addition to the stindi4 instruction, this code contains the ldindi4 instruction (load a 4-byte integer indirectly) This instruction can be used to read a 4-byte integer value at a given virtual memory address To completely support the C++ type system, C++/CLI must also be able to map C++ reference arguments and arguments with const modifiers to IL code The following function shows an example of a function with a reference argument: void f(int& i) { i = 42; } Since a C++ reference has the same binary layout as a native pointer (both simply store addresses), the C++/CLI compiler maps an int& to the IL type int32* To differentiate the C++ types int& and int*, a signature modifier is used again: method assembly static void f(int32* modopt([mscorlib]SystemRuntimeCompilerServices.

If this is the first time the script is run and there is no existing shadow file, the script will create one based on the specified passwd file. Since the age of the password was probably not tracked before the first time this script is run, the script assumes that today is the day the password was last changed, and enters that value in the new shadow file. This gives users the benefit of the doubt.

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