PHP 및 Oracle 데이터베이스에 대한 재해 복구 및 고가용성 팁

<?php
$backupDir = "/path/to/backup/dir/";
$database = "your_database_name";
$username = "your_database_username";
$password = "your_database_password";

// 创建备份文件名
$backupFile = $backupDir . $database . "_" . date("Ymd") . ".bak";

// 导出数据库结构和数据
$command = "exp " . $username . "/" . $password . " file=" . $backupFile . " full=y";

exec($command, $output, $return);

if ($return === 0) {
    echo "数据库备份成功！";
} else {
    echo "数据库备份失败！";
}
?>

<?php
$backupFile = "/path/to/backup/dir/your_database_name_20210101.bak";
$username = "your_database_username";
$password = "your_database_password";

// 导入备份文件
$command = "imp " . $username . "/" . $password . " file=" . $backupFile . " full=y";

exec($command, $output, $return);

if ($return === 0) {
    echo "数据库恢复成功！";
} else {
    echo "数据库恢复失败！";
}
?>

<?php
$primaryDatabase = "primary_database_name";
$primaryUsername = "primary_database_username";
$primaryPassword = "primary_database_password";
$standbyDatabase = "standby_database_name";
$standbyUsername = "standby_database_username";
$standbyPassword = "standby_database_password";

// 在主数据库上创建归档模式
$primaryConnection = oci_connect($primaryUsername, $primaryPassword, $primaryDatabase);
$primarySql = "ALTER DATABASE ARCHIVELOG";
$primaryStatement = oci_parse($primaryConnection, $primarySql);
oci_execute($primaryStatement);
oci_close($primaryConnection);

// 在备份数据库上配置主数据库信息
$standbyConnection = oci_connect($standbyUsername, $standbyPassword, $standbyDatabase);
$standbySql = "ALTER SYSTEM SET LOG_ARCHIVE_CONFIG = 'DG_CONFIG=(" . $primaryDatabase . "," . $standbyDatabase . ")'";
$standbyStatement = oci_parse($standbyConnection, $standbySql);
oci_execute($standbyStatement);
oci_close($standbyConnection);

echo "主从复制设置成功！";
?>