1.首先以 sysdba 的方式进入数据库
su - oracle
sqlplus / as sysdba
2.由于获取的 AWR 报告数量较多,建议新建一个文件夹
先创建一个文件夹
mkdir /home/oracle/work_dir/zlw/20211229
3.创建完成后,制定新创建的路径为存放 AWR 报告的路径
CREATE OR REPLACE DIRECTORY awr_reports_dir AS
'/home/oracle/work_dir/zlw/20211229';
4.首先按照常规获取 AWR 报告的方式,获取所需时间区间的 Snap ID
之后,执行如下脚本(在第三行与第四行分别输入开始与结束时间点的 Snap ID)
DECLARE
-- Adjust before use.
l_snap_start NUMBER := 44961;
l_snap_end NUMBER := 44963;
l_dir VARCHAR2(50) := 'AWR_REPORTS_DIR';
l_last_snap NUMBER := NULL;
l_dbid v$database.dbid%TYPE;
l_instance_number gv$instance.instance_number%TYPE;
l_file UTL_FILE.file_type;
l_file_name VARCHAR(50);
BEGIN
SELECT dbid
INTO l_dbid
FROM v$database;
SELECT instance_number
INTO l_instance_number
FROM v$instance;
FOR cur_snap IN (SELECT snap_id
FROM dba_hist_snapshot
WHERE instance_number = l_instance_number
AND snap_id BETWEEN l_snap_start AND l_snap_end
ORDER BY snap_id)
LOOP
IF l_last_snap IS NOT NULL THEN
l_file := UTL_FILE.fopen(l_dir, 'awr_'|| l_instance_number || '_' ||
l_last_snap || '_' || cur_snap.snap_id || '.html', 'w', 32767);
FOR cur_rep IN (SELECT output
FROM TABLE(DBMS_WORKLOAD_REPOSITORY.awr_report_html(l_dbid,
l_instance_number, l_last_snap, cur_snap.snap_id)))
LOOP
UTL_FILE.put_line(l_file, cur_rep.output);
END LOOP;
UTL_FILE.fclose(l_file);
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