Tài liệu ORACLE8i- P7 doc

... guesses should be used only when a table will have little change activity. You can use the ROWID pseudocolumn to select logical ROWIDs from an IOT. The ROWIDs are a bit different in format than the ... ROWIDs for tables are not stored in the database, but are generated on the fly when the ROWID pseudocolumn is used in a query. Creating Heap Tables To create a table, use the CREATE TABLE DDL s...

Ngày tải lên: 24/12/2013, 19:15

... cần thiết ra khỏi bức ảnh mà bạn còn có thể thay thế những vùng bị mất trong bức ảnh quét từ tài liệu nguyên thủy vốn đã bị hư hỏng bằng những chi tiết thích hợp lấy ra từ những vùng khác. Bạn ... việc tô sửa ảnh bằng snapshot và công cụ History Brush. Có một cách khác để bảo toàn nguyên bản tài liệu là thực hiện việc chấm sửa ảnh trên lớp nhân bản của ảnh nguyên thủy. Tiếp theo,...

Ngày tải lên: 22/12/2013, 10:16

... watermark. 9 city state zip procedure procedure_cost DOCTOR ——————————- doctor_number - PK doctor_name DOCTOR_ASSIGNMENT ——————————- patient_id - PK / FK doctor_number - PK / FK Comments Note that the ... PATIENT_ID primary key. We have added DOCTOR table, which now contains the DOCTOR_ NAME column, since the DOCTOR_NAME column is not related to the primary key. We also have a third table, DO...

Ngày tải lên: 24/12/2013, 19:15

... cov- ered in Chapter 6. Robert’s Rant: Read That Documentation!! Many Oracle DBAs are not familiar or even comfortable with the Oracle documentation. While the documentation Oracle provides is not always ... now. Get out the docu- mentation CD, start it up, and spend at least a good hour with it. Learn how to use the documentation search functions, awkward though they may be. Know what docume...

Ngày tải lên: 24/12/2013, 19:15

... the V$LOG and V$LOGFILE parameters to document the location and sizes of the online redo logs. Listing 4.6 shows a report that uses the data dictionary to document the location, number, and size ... DICTIONARY 160 • For database documentation. In particular, the V$ views provide information on the redo logs and the control files. The rest of this chapter demonstrates this use in documenting p...

Ngày tải lên: 24/12/2013, 19:15

Ngày tải lên: 24/12/2013, 19:15

... recovery catalog RMAN> @d:\oracle\admin\ora817\recover_script\rman_cold_backup.rman NOTE Some RMAN documentation and some error messages indicate that certain RMAN failures are restartable, and even

Ngày tải lên: 22/01/2014, 00:20

... use of some really cool events. WARNING Events in Oracle are not all that well documented (in fact, many are not documented at all), and they can change from version to version. Often, it takes ... table called APPOINTMENTS in the DOC- TORS schema. In that table, you have a column called LAST_NAME. You set up a logmnr.opt file with the following entry: colmap = doctors appointments (1, last...

Ngày tải lên: 22/01/2014, 00:20

... TUNING 648 Calculating the Hit Ratio for Any Buffer Pool An alternative to using the V$SYSSTAT view is to use two undocumented tables intro- duced in Oracle8i: X$KCBWS and X$KCBWBPD. As explained earlier in this ... TUNING 670 Here is the resulting output from the query: OWNER TABLE_NAME DENSITY POR_OWN SSEPDOCUMENT 74.56% POR_OWN SSEPMESSENGER 28.65% POR_OWN SSEPOBJECTREPOS 73.36% POR_OWN...

Ngày tải lên: 22/01/2014, 00:20

... that have a minimum of the specified number of versions I_ALL_INIT Undocumented (Oracle internal use only) I_PIN_STATSPACK Undocumented (Oracle internal use only) I_MODIFY_PARAMETER FALSE Allows ... Default Value Purpose I_UCOMMENT Blank A comment that will be stored with the snapshot I_NUM_SQL Undocumented (Oracle internal use only) I_EXECUTIONS_TH 100 Reports on only SQL statements tha...

Ngày tải lên: 22/01/2014, 00:20