My_diary/My operate logs.md

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2024-12-10 21:55:00 +08:00
### My operate logs
time: 2024-12-10 20:06
___
+ change ext1
```shell
dblogin userid ggs_user, password dreamking123
alter extract ext1, database, begin timestamp '2024-12-10 18:00:00'
```
+ add extract file
```shell
add extract ext1, tranlog, begin now
ADD EXTTRAIL ./dirdat/et, EXTRACT EXT1
```
+ define a directory
```shell
Directory created.
26:
SQL> DROP DIRECTORY DATA_PUMP_DIR;
SQL> create directory DATA_PUMP_DIR as '/mnt/ogg';
24:
SQL> DROP DIRECTORY DATA_PUMP_DIR;
SQL> CREATE DIRECTORY DATA_PUMP_DIR AS '/data/oracle/ogg/dirdat';
CREATE DIRECTORY NEW_DATA_PUMP_DIR AS '/data/oracle/ogg/dirdat';
```
+ trans database by schema
```shell
expdp ggs_user/dreamking123 directory=DATA_PUMP_DIR dumpfile=laozhao_export.dmp schemas=laozhao
expdp ggs_user/dreamking123 directory=DATA_PUMP_DIR dumpfile=laozhao_export.dmp schemas=laozhao logfile=laozhao_export.log
impdp ggs_user/dreamking123 directory=DATA_PUMP_DIR dumpfile=laozhao_export.dmp
impdp ggs_user/dreamking123 directory=DATA_PUMP_DIR dumpfile=laozhao_export.dmp logfile=laozhao_import.log
impdp ggs_user/dreamking123 directory=DATA_PUMP_DIR dumpfile=laozhao_export.dmp logfile=laozhao_import.log TABLE_EXISTS_ACTION=REPLACE
```
+ sysc scn
```shell
SQL> SELECT current_scn FROM v$database;
CURRENT_SCN
-----------
2426704
```
+