oracle备份

#!/bin/bash
export PATH=/usr/bin:/bin
export LANG=en_US.UTF-8

# 待备份实例列表
ORACLE_SID_LIST="hx1 hxtest1 cdb1db11"
# 备份根路径
BACKUP_ROOT="/rmanbk"
# 生成时间目录：年月日_时分
TIME_DIR=$(date +%Y%m%d_%H%M)
BACKUP_DIR="${BACKUP_ROOT}/${TIME_DIR}"
# 日志目录与日志文件
LOG_DIR="${BACKUP_DIR}/logs"
LOG_FILE="${LOG_DIR}/backup.log"

# 初始化目录
mkdir -p "${BACKUP_DIR}" "${LOG_DIR}"

# Oracle 环境变量（正式环境原值）
export ORACLE_HOME="/u01/app/oracle/product/19.0.0.0/dbhome_1"
export PATH="${ORACLE_HOME}/bin:${PATH}"

# 重定向标准输出、错误输出到日志文件，完整打印所有日志
exec > "${LOG_FILE}" 2>&1

echo "======================================================"
echo "            Oracle RMAN 全量备份任务启动"
echo "执行时间: $(date '+%Y-%m-%d %H:%M:%S')"
echo "备份总目录: ${BACKUP_DIR}"
echo "待备份实例: ${ORACLE_SID_LIST}"
echo "ORACLE_HOME: ${ORACLE_HOME}"
echo "======================================================"
echo ""

# 循环遍历每个实例执行备份
for sid in ${ORACLE_SID_LIST}
do
    echo "=================================================="
    echo "  开始备份实例: ${sid}  |  时间: $(date '+%Y-%m-%d %H:%M:%S')"
    echo "=================================================="
    export ORACLE_SID="${sid}"

    # RMAN 执行，完整输出所有日志
    rman target / <<EOF
sql 'alter system checkpoint';
# 0级压缩全库备份
backup as compressed backupset incremental level 0 database format '${BACKUP_DIR}/${sid}_full_%d_%T_%U';

# 切换当前联机日志，保证归档完整性
sql 'alter system archive log current';

# 归档日志备份，成功后自动删除原归档
backup as compressed backupset archivelog all format '${BACKUP_DIR}/${sid}_arch_%d_%T_%U' delete all input;

# 交叉校验+清理失效归档元数据
crosscheck archivelog all;
delete noprompt expired archivelog all;

# 按 RETENTION POLICY 清理过期备份
report obsolete;
delete noprompt obsolete;
exit;
EOF

    # 判断单实例备份执行结果
    if [ $? -eq 0 ];then
        echo "【完成】实例 ${sid} 备份执行正常"
    else
        echo "【异常】实例 ${sid} 备份执行失败，请检查日志！"
    fi
    echo ""
done

echo "======================================================"
echo "所有实例备份任务执行完毕"
echo "结束时间: $(date '+%Y-%m-%d %H:%M:%S')"
echo "完整日志文件: ${LOG_FILE}"
echo "======================================================"