Oracle Critical Database Patch IDs for April 2021

An Essential/Critical Patch Update could be a collection of patches for multiple security vulnerabilities. These patches address vulnerabilities in Oracle code and third-party elements enclosed in Oracle merchandise. These patches are sometimes additive, however every informative describes only the protection patches intercalary since the previous essential Patch Update informative.

Below is the list of Oracle Critical Patch IDs for all versions (19c,18c, 12c) of Grid & Databases along with combo PSU patch IDs for April 2021.

Version 19c (

Patch ID Database ReleasePatch TypeAvailable Date (ETA)
3257897319. OJVM plus GRID (UNIX)Available
3254500819. (UNIX)Available
3257897219. OJVM plus DATABASE (UNIX)Available
3254501319. (UNIX)Available
3240915419. WINDOWS (32 & 64 BIT)Available
3257917819. (LINUX)Available
3239981619. (All Platform)Available
19c: Oracle Critical Patches Apr, 21

Version 18c (


Patch IDDatabase ReleasePatch TypeAvailable Date (ETA)
3257902418. OJVM plus GRID (UNIX)Available
3252415218. (UNIX)Available
3257902218. OJVM plus DATABASE (UNIX)Available
3252415518. (UNIX)Available
3243848118. WINDOWS (32 & 64 BIT)Available
3257917718. (UNIX)Available
3255275218. (All Platform)Available
18c: Oracle Critical Patches Apr, 21

Version 12cR2 (

Patch IDDatabase ReleasePatch TypeAvailable Date (ETA)
3257905712. OJVM plus GRID (UNIX)Available
3254014912. (UNIX)Available
3257904912. OJVM plus DATABASE (UNIX)Available
3250773812. (UNIX)Available
3239208912. WINDOWS (32 & 64 BIT)Available
32579154FULL STACK Q2EXADATA (UNIX)Available
3247317212. (UNIX)Available
3242767412. (WINDOWS)Available
12cR2: Oracle Critical Patches Apr, 21

Version 12cR1 (

Patch IDDatabase ReleasePatch TypeAvailable Date (ETA)
3257907712. OJVM plus GRID (UNIX)Available
3249512612. (UNIX)Available
3257907412. OJVM plus DATABASE (UNIX)Available
3232863512. (UNIX)Available
3239618112. WINDOWS (32 & 64 BIT)Available
32579140FULL STACK Q2EXADATA (UNIX)Available
3247316412. (UNIX)Available
3242768312. (WINDOWS)Available
12cR1: Oracle Critical Patches Apr, 21


The next four dates for Critical Patch Updates are:

Click here to get patching-related articles.

Key points to remember:

**To download patches you need valid credentials of Oracle support/Metalink.

**All patch IDs are provided by Oracle, visit DOC ID 2749094.1.

**Most patches are revealed for platform Linux except Exadata and Supercluster, few platforms are to be revealed soon, refer to the above tables for ETA.

**Team DBsGuru is not chargeable for patch transfer/download to apply or any error occurs while patch applies, so transfer/download the proper patch for the desired version and platform.

** Oracle client home patch ID is the same patch ID as Oracle database server home-specific platform UNIX or WINDOWS i.e applicable on both.

**Always suggest reviewing patch readme, specific to patch ID before applying.

**Feel free to reach us for any help required on the patch, drop your valuable concerns/suggestions within the comment/chat section.

This document is just for learning purpose and always validate in the LAB environment first before applying in the LIVE environment.

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