#174. As a DBA, one of your tasks is to periodically monitor the alert log file and the background trace files. In doing so, you notice repeated messages indicating that Log Writer (LGWR) frequently has to wait for a redo log group because a checkpoint has not completed or a redo log group has not been archived. What should you do to eliminate the wait LGWR frequently encounters?
#179. You created a tablespace SH_TBS. The tablespace consists of two data files: sh_tbs_datal .dbf and sh_tbs_data2.dbf. You created a nonpartitioned table SALES_DET in the SH_TBS tablespace. Which two statements are true? (Choose two.)
#180. Examine the list of steps to rename the data file of a non-SYSTEM tablespace HR_TBS. The steps are arranged in random order. 1. Shut down the database. 2. Bring the HR_TBS tablespace online. 3. Execute the ALTER DATABASE RENAME DATAFILE command 4. Use the operating system command to move or copy the file 5. Bring the tablespace offline. 6. Open the database. What is the correct order for the steps?