oracle数据库常用命令五（PDB快照）

SHOW PARAMETER “_exadata_feature_on”
alter system set “_exadata_feature_on”=true scope=spfile;

shutdown immediate;
startup;

alter session set container = cdb$root;
CREATE PLUGGABLE DATABASE pdb3
ADMIN USER pdb_admin IDENTIFIED BY Password1
SNAPSHOT MODE EVERY 24 HOURS;
ALTER PLUGGABLE DATABASE pdb3 OPEN;
show pdbs

ALTER PLUGGABLE DATABASE pdb3 SAVE STATE;

SELECT p.con_id,p.pdb_name,p.snapshot_mode,
p.snapshot_interval
FROM cdb_pdbs p
ORDER BY 1;

更改快照设置
alter session set container = PDB3;
ALTER PLUGGABLE DATABASE SNAPSHOT MODE EVERY 2999 MINUTES;


ALTER PLUGGABLE DATABASE SNAPSHOT MODE EVERY 1999 HOURS;

ALTER PLUGGABLE DATABASE SNAPSHOT MODE MANUAL;

ALTER PLUGGABLE DATABASE SNAPSHOT MODE NONE;

ALTER PLUGGABLE DATABASE SNAPSHOT MODE EVERY 24 HOURS;

SELECT pr.con_id,
p.pdb_name,
pr.property_name,
pr.property_value,
pr.description
FROM cdb_properties pr
JOIN cdb_pdbs p ON pr.con_id = p.con_id
WHERE pr.property_name = ‘MAX_PDB_SNAPSHOTS’
ORDER BY pr.property_name;

设置快照数量
alter session set container = PDB3;
ALTER PLUGGABLE DATABASE pdb3 SET MAX_PDB_SNAPSHOTS=4;
SELECT r.CON_ID AS id, p.PDB_NAME, PROPERTY_NAME,
PROPERTY_VALUE AS value, DESCRIPTION
FROM CDB_PROPERTIES r, CDB_PDBS p
WHERE r.CON_ID = p.CON_ID
AND PROPERTY_NAME LIKE ‘MAX_PDB%’
ORDER BY PROPERTY_NAME;

修改回去

快照的信息
SELECT con_id,con_name,snapshot_name,
snapshot_scn, full_snapshot_path
FROM cdb_pdb_snapshots
ORDER BY con_id, snapshot_scn;

手工做快照创建
创建两个
ALTER PLUGGABLE DATABASE SNAPSHOT;
ALTER PLUGGABLE DATABASE SNAPSHOT lh_kuaizhao_1;

查看创建的快照

删除快照
ALTER PLUGGABLE DATABASE DROP SNAPSHOT LH_KUAIZHAO_2;
ALTER PLUGGABLE DATABASE DROP SNAPSHOT SNAP_562389786_1067211597;



使用快照创建PDB
CREATE PLUGGABLE DATABASE pdb3_kuaiz FROM pdb3 USING SNAPSHOT LH_KUAIZHAO_1
SNAPSHOT MODE EVERY 24 HOURS;
ALTER PLUGGABLE DATABASE pdb3_kuaiz OPEN;

ALTER PLUGGABLE DATABASE pdb3_kuaiz OPEN;


使用快照号创建
show pdbs
CREATE PLUGGABLE DATABASE pdb3_copy FROM pdb3 USING
SNAPSHOT SNAP_562389786_1067211731 SNAPSHOT MODE EVERY 24 HOURS;
ALTER PLUGGABLE DATABASE pdb3_copy OPEN;

SELECT owner,
job_name,
repeat_interval
FROM dba_scheduler_jobs
WHERE job_name LIKE ‘%SNAPSHOT’
ORDER BY owner, job_name;