Patching: ADOP Prepare Phase

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adop phase=prepare

Understanding ADOP Prepare Parameters

Before diving into the prepare phase, let's go over the key parameters:

  1. skipsyncerror: This parameter specifies whether to ignore errors that may occur during incremental file system synchronization.

    • Options: yes or no (default: no)
    • Usage: Set to yes if you encountered errors in a previous patching cycle but decided to continue with the cutover. This will ignore apply errors during the next synchronization.

  2. sync_mode: This parameter determines the method used to synchronize the patch file system with the run file system.

    • Options: delta or patch (default: patch)
    • Usage:
      • delta: Uses the file system synchronization command specified in $AD_TOP/patch/115/etc/delta_sync_drv.txt.
      • patch: Reapplies patches applied on the run file system.

Example Command

adop phase=prepare skipsyncerror=yes sync_mode=delta


Step-by-Step Execution
1. Validating Passwords
The process begins by validating the credentials for apps, system, and WebLogic.
2. Creating the Session ID
A unique session ID is generated for this patching cycle.
  • Example: session id: 22
3. Generating the Log File
A log file is created to record the patching activities.
  • Example: /apps/oracle/fs_ne/EBSapps/log/adop/22/20200127_122704/adop.log
4. Configuration Validation
The system configuration is validated to ensure everything is ready for the prepare phase.
5. Verifying Data Dictionary
It will verify the data disctionary objects.
6. Checking System Readiness
The system undergoes various checks to confirm it is ready to proceed with the prepare phase.
7. Checking AD-TXK Code Level
The current AD-TXK code level is verified.
8. Checking for Pending Cleanup Actions
Any pending cleanup actions from previous patching cycles are identified and resolved.
9. Validating Database Readiness
The database is validated to ensure it is ready for the prepare phase.
10. Generating Tablespace Report
A report on key tablespaces is generated to provide insights into the current state of the database.
11. Submitting ADZDPATCH Concurrent Program
The ADZDPATCH concurrent program is submitted.
12. Waiting for Conflicting Requests
Any conflicting requests are waited on to complete before proceeding.
13. Preparing System
The system is prepared for the patching process.
14. Synchronizing Patch Filesystem with Run Filesystem
The synchronization of the patch filesystem with the run filesystem is executed. This can be done in two modes:
  • Incremental Synchronization Mode: Only the modifications from the patches are synchronized.
  • Full Synchronization Mode: If the previous patching cycle was aborted, the system performs a 
  • full synchronization by deleting the patch file system rm -rf command and
  • restoring the entire content from the run file system.
15. Preparing Seed Data Tables
The seed data tables are prepared.
16. Running AutoConfig
AutoConfig is run on the patch edition file system.
17. Synchronizing Snapshots
Snapshots are synchronized to ensure consistency.
18. Generating Editions Report
An editions report is generated.
19. Generating Log Report
A log report is generated for review.
20. Stopping Services
Services on the patch file system are stopped, including:
  • Admin server
  • Node manager
Completion
The prepare phase completes successfully, setting the stage for the next steps in the patching cycle.

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