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Databases and Refreshing Test Data


3. Import Prod Dump File

This procedure SCHEMA_REFRESH.IMPORT_PROD imports the Production database export dump file into the Test database. Listing 3 lists the API that shows how the prod dump file is imported in the Test database using data pump technology.


procedure import_prod
 as
  ind NUMBER;              -- Loop index
  h1 NUMBER;               -- Data Pump job handle
  percent_done NUMBER;     -- Percentage of job complete
  job_state VARCHAR2(30);  -- To keep track of job state
  le ku$_LogEntry;         -- For WIP and error messages
  js ku$_JobStatus;        -- The job status from get_status
 -- jd ku$_JobDesc;          -- The job description from get_status
  sts ku$_Status;          -- The status object returned by get_status
BEGIN
-- Create a (user-named) Data Pump job to do a "full" import (everything
-- in the dump file without filtering).

 h1 := dbms_datapump.open (operation => 'IMPORT',  job_mode => 'FULL',  version => 'COMPATIBLE');

dbms_datapump.add_file(handle => h1, filename => 'IMPDAT.LOG',  filetype => 3);
dbms_datapump.add_file(handle => h1, filename => 'refresh.dmp', filetype => 1);
-- If a table already exists in the destination schema, skip it (leave
-- the preexisting table alone). This is the default, but it does not hurt
-- to specify it explicitly.
 DBMS_DATAPUMP.SET_PARAMETER(h1,'TABLE_EXISTS_ACTION','SKIP');
DBMS_DATAPUMP.metadata_filter (HANDLE =>h1,NAME => 'EXCLUDE_PATH_EXPR',VALUE=>'IN(''STATISTICS'')');
-- Start the job. An exception is returned if something is not set up properly.
  DBMS_DATAPUMP.START_JOB(h1);
-- The import job should now be running. In the following loop, the job is 
-- monitored until it completes. In the meantime, progress information is 
-- displayed. Note: this is identical to the export example.
 
 percent_done := 0;
  job_state := 'UNDEFINED';
  while (job_state != 'COMPLETED') and (job_state != 'STOPPED') loop
    dbms_datapump.get_status(h1,
           dbms_datapump.ku$_status_job_error +
           dbms_datapump.ku$_status_job_status +
           dbms_datapump.ku$_status_wip,-1,job_state,sts);
    js := sts.job_status;
-- If the percentage done changed, display the new value.
     if js.percent_done != percent_done
    then
      dbms_output.put_line('*** Job percent done = ' ||
                           to_char(js.percent_done));
      percent_done := js.percent_done;
    end if;
-- If any work-in-progress (WIP) or Error messages were received for the job,
-- display them.
       if (bitand(sts.mask,dbms_datapump.ku$_status_wip) != 0)
    then
      le := sts.wip;
    else
      if (bitand(sts.mask,dbms_datapump.ku$_status_job_error) != 0)
      then
        le := sts.error;
      else
        le := null;
      end if;
    end if;
    if le is not null
    then
      ind := le.FIRST;
      while ind is not null loop
        dbms_output.put_line(le(ind).LogText);
        ind := le.NEXT(ind);
      end loop;
    end if;
  end loop;
-- Indicate that the job finished and gracefully detach from it. 
 -- dbms_output.put_line('Job has completed');
  --dbms_output.put_line('Final job state = ' || job_state);
  dbms_datapump.detach(h1);
   exception
     when others then
         Raise_Application_Error ( -40000, 'Import Data Pump Error ');
END import_prod;

Listing 3: Import Prod Dump File


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