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+### 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
+  
+  
+  
+  ```
+
+  
+
++
+