import * as pulumi from "@pulumi/pulumi";
/**
 * This data source provides details about a specific Db Systems Upgrade History Entry resource in Oracle Cloud Infrastructure Database service.
 *
 * Gets the details of the specified operating system upgrade operation for the specified DB system.
 *
 * ## Example Usage
 *
 * ```typescript
 * import * as pulumi from "@pulumi/pulumi";
 * import * as oci from "@pulumi/oci";
 *
 * const testDbSystemsUpgradeHistoryEntry = oci.database.getDbSystemsUpgradeHistoryEntry({
 *     dbSystemId: testDbSystem.id,
 *     upgradeHistoryEntryId: testUpgradeHistoryEntry.id,
 * });
 * ```
 */
export declare function getDbSystemsUpgradeHistoryEntry(args: GetDbSystemsUpgradeHistoryEntryArgs, opts?: pulumi.InvokeOptions): Promise<GetDbSystemsUpgradeHistoryEntryResult>;
/**
 * A collection of arguments for invoking getDbSystemsUpgradeHistoryEntry.
 */
export interface GetDbSystemsUpgradeHistoryEntryArgs {
    /**
     * The DB system [OCID](https://docs.cloud.oracle.com/iaas/Content/General/Concepts/identifiers.htm).
     */
    dbSystemId: string;
    /**
     * The database/db system upgrade History [OCID](https://docs.cloud.oracle.com/iaas/Content/General/Concepts/identifiers.htm).
     */
    upgradeHistoryEntryId: string;
}
/**
 * A collection of values returned by getDbSystemsUpgradeHistoryEntry.
 */
export interface GetDbSystemsUpgradeHistoryEntryResult {
    /**
     * The operating system upgrade action.
     */
    readonly action: string;
    readonly dbSystemId: string;
    /**
     * The provider-assigned unique ID for this managed resource.
     */
    readonly id: string;
    /**
     * A descriptive text associated with the lifecycleState. Typically contains additional displayable text.
     */
    readonly lifecycleDetails: string;
    /**
     * A valid Oracle Grid Infrastructure (GI) software version.
     */
    readonly newGiVersion: string;
    /**
     * A valid Oracle Software (OS) version eg. Oracle Linux Server release 8
     */
    readonly newOsVersion: string;
    /**
     * A valid Oracle Grid Infrastructure (GI) software version.
     */
    readonly oldGiVersion: string;
    /**
     * A valid Oracle Software (OS) version eg. Oracle Linux Server release 8
     */
    readonly oldOsVersion: string;
    /**
     * The retention period, in days, for the snapshot that allows you to perform a rollback of the upgrade operation. After this number of days passes, you cannot roll back the upgrade.
     */
    readonly snapshotRetentionPeriodInDays: number;
    /**
     * The current state of the action.
     */
    readonly state: string;
    /**
     * The date and time when the upgrade action completed
     */
    readonly timeEnded: string;
    /**
     * The date and time when the upgrade action started.
     */
    readonly timeStarted: string;
    readonly upgradeHistoryEntryId: string;
}
/**
 * This data source provides details about a specific Db Systems Upgrade History Entry resource in Oracle Cloud Infrastructure Database service.
 *
 * Gets the details of the specified operating system upgrade operation for the specified DB system.
 *
 * ## Example Usage
 *
 * ```typescript
 * import * as pulumi from "@pulumi/pulumi";
 * import * as oci from "@pulumi/oci";
 *
 * const testDbSystemsUpgradeHistoryEntry = oci.database.getDbSystemsUpgradeHistoryEntry({
 *     dbSystemId: testDbSystem.id,
 *     upgradeHistoryEntryId: testUpgradeHistoryEntry.id,
 * });
 * ```
 */
export declare function getDbSystemsUpgradeHistoryEntryOutput(args: GetDbSystemsUpgradeHistoryEntryOutputArgs, opts?: pulumi.InvokeOutputOptions): pulumi.Output<GetDbSystemsUpgradeHistoryEntryResult>;
/**
 * A collection of arguments for invoking getDbSystemsUpgradeHistoryEntry.
 */
export interface GetDbSystemsUpgradeHistoryEntryOutputArgs {
    /**
     * The DB system [OCID](https://docs.cloud.oracle.com/iaas/Content/General/Concepts/identifiers.htm).
     */
    dbSystemId: pulumi.Input<string>;
    /**
     * The database/db system upgrade History [OCID](https://docs.cloud.oracle.com/iaas/Content/General/Concepts/identifiers.htm).
     */
    upgradeHistoryEntryId: pulumi.Input<string>;
}
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