KB-2381 How to fix a corrupted database table index using phpMyAdmin

Kaushal Patel — Thu, 07 May 2026 15:22:49 GMT

Current Revision posted to Appian Knowledge Base by Kaushal Patel on 5/7/2026 3:22:49 PM

Purpose

A corrupted index can make the associated table inaccessible. This can cause any queries, applications, or automated processes that rely on the table to fail until the index is repaired. This article outlines how to repair the affected index.

Instructions

Open the phpMyAdmin interface.
Using the index definition from the table, drop and recreate the affected index using the following commands.
1. Check the table to confirm the affected index: CHECK TABLE <table_name>;
2. Identify the affected index and column information: SHOW CREATE TABLE <table_name>;
3. Drop the affected index: ALTER TABLE <table_name> DROP INDEX <index_name>;
4. Recreate the affected index: ALTER TABLE <table_name> ADD INDEX <index_name>(cols);
5. Confirm the issue was resolved: CHECK TABLE <table_name>;

Affected Versions

This article applies to all versions of Appian Cloud.

Last Reviewed: April 2026

Tags: phpmyadmin, database, how-to, index

KB-2381 How to fix a corrupted database table index using phpMyAdmin

Kaushal Patel — Thu, 07 May 2026 15:22:49 GMT

Revision 16 posted to Appian Knowledge Base by Kaushal Patel on 5/7/2026 3:22:49 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition from the table, drop and recreate the affected index using the following commands.
1. Check the table to confirm the affected index: CHECK TABLE <table_name>;
2. Identify the affected index and column information: SHOW CREATE TABLE <table_name>;
3. Drop the affected index: ALTER TABLE <table_name> DROP INDEX <index_name>;
4. Recreate the affected index: ALTER TABLE <table_name> ADD INDEX <index_name>(cols);
5. Confirm the issue was resolved: CHECK TABLE <table_name>;

Affected Versions

This article applies to all versions of Appian Cloud.

Last Reviewed: April 2026

Tags: phpmyadmin, database, how-to, index

[DRAFT][NEW] KB-XXXX How to fix a corrupted database table index using phpMyAdmin

Kaushal Patel — Thu, 07 May 2026 14:16:14 GMT

Revision 15 posted to Appian Knowledge Base by Kaushal Patel on 5/7/2026 2:16:14 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition from the table, drop and recreate the affected index using the following commands.
1. Check the table to confirm the affected index: CHECK TABLE <table_name>;
2. Identify the affected index and column information: SHOW CREATE TABLE <table_name>;
3. Drop the affected index: ALTER TABLE <table_name> DROP INDEX <index_name>;
4. Recreate the affected index: ALTER TABLE <table_name> ADD INDEX <index_name>(cols);
5. Confirm the issue was resolved: CHECK TABLE <table_name>;

Affected Versions

This article applies to all versions of Appian Cloud.

Last Reviewed: April 2026

[DRAFT][NEW] KB-XXXX How to fix a corrupted database table index using phpMyAdmin

Kaushal Patel — Thu, 07 May 2026 14:15:36 GMT

Revision 14 posted to Appian Knowledge Base by Kaushal Patel on 5/7/2026 2:15:36 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition from the table, drop and recreate the affected index using the following commands.
1. Check the table to confirm the affected index: CHECK TABLE <table_name>;
2. Identify the affected index and column information: SHOW CREATE TABLE <table_name>;
3. Drop the affected index: ALTER TABLE <table_name> DROP INDEX <index_name>;
4. Recreate the affected index: ALTER TABLE <table_name> ADD INDEX <index_name>(cols);
5. Confirm the issue was resolved: CHECK TABLE <table_name>;

Affected Versions

This article applies to all versions of Appian Cloud.

Last Reviewed: April 2026

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Fri, 17 Apr 2026 14:50:03 GMT

Revision 13 posted to Appian Knowledge Base by carmen.cohen on 4/17/2026 2:50:03 PM

Purpose

Corrupted index can make the associated table inaccessible. This will cause any queries, applications, or automated processes that rely on this table to fail until the index is repaired. This article outlines how to fix the affected indexes.

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it using the following commands.
1. Check the table to confirm the affected index: Check table <table_name>;
2. Gather affected table index and column: Show create table <table_name>;
3. Drop the affected inde: Alter table <table_name> drop index <index_name>;
4. Add the affected index again: Alter table <table_name> add index <index_name>(cols);
5. Confirm issue was resolved: Check table <table_name>;

Affected Versions

This article applies to all versions of Appian Cloud.

Last Reviewed: April 2026

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Fri, 17 Apr 2026 14:49:35 GMT

Revision 12 posted to Appian Knowledge Base by carmen.cohen on 4/17/2026 2:49:35 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it using the following commands.
1. Check the table to confirm the affected index: Check table <table_name>;
2. Gather affected table index and column: Show create table <table_name>;
3. Drop the affected inde: Alter table <table_name> drop index <index_name>;
4. Add the affected index again: Alter table <table_name> add index <index_name>(cols);
5. Confirm issue was resolved: Check table <table_name>;

Affected Versions

This article applies to all versions of Appian Cloud.

Last Reviewed: April 2026

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Fri, 17 Apr 2026 14:38:41 GMT

Revision 11 posted to Appian Knowledge Base by carmen.cohen on 4/17/2026 2:38:41 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it using the following commands.
1. Check the table to confirm the affected index: Check table <table_name>;
2. Gather affected table index and column: Show create table <table_name>;
3. Drop the affected inde: Alter table <table_name> drop index <index_name>;
4. Add the affected index again: Alter table <table_name> add index <index_name>(cols);
5. Confirm issue was resolved: Check table <table_name>;

Affected Versions

This article applies to all versions of Appian Cloud.

Last Reviewed: April 2026

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Fri, 17 Apr 2026 14:31:24 GMT

Revision 10 posted to Appian Knowledge Base by carmen.cohen on 4/17/2026 2:31:24 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it using the following commands.
1. Check the table to confirm the affected index: Check table <table_name>;
2. Gather affected table index and column: Show create table <table_name>;
3. Drop the affected inde: Alter table <table_name> drop index <index_name>;
4. Add the affected index again: Alter table <table_name> add index <index_name>(cols);
5. Confirm issue was resolved: Check table <table_name>;

Affected Versions

This article applies to all versions of Appian Cloud.

Last Reviewed: April 2026

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Fri, 17 Apr 2026 14:18:14 GMT

Revision 9 posted to Appian Knowledge Base by carmen.cohen on 4/17/2026 2:18:14 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it using the following commands.
1. Check the table to confirm the affected index. Check table <table_name>;
2. Gather affected table index and column
  Show create table <table_name>;
3. Drop the affected index.Alter table <table_name> drop index <index_name>;
4. Add the affected index again.Alter table <table_name> add index <index_name>(cols);
5. Confirm issue was resolved.
  
  Check table <table_name>;

Affected Versions

This article applies to all versions of Appian Cloud.

Last Reviewed: April 2026

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Fri, 17 Apr 2026 13:48:59 GMT

Revision 8 posted to Appian Knowledge Base by carmen.cohen on 4/17/2026 1:48:59 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it using the following commands.
1. Check the table to confirm the affected index. Check table <table_name>;
2. Gather affected table index and column Show create table <table_name>;
3. Alter table <table_name> drop index <index_name>;
4. Alter table <table_name> add index <index_name>(cols);
5. Check table <table_name>;

Affected Versions

This article applies to all versions of Appian.
This article applies to all versions of Appian Cloud.

Last Reviewed: Month YYYY

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Thu, 16 Apr 2026 14:12:13 GMT

Revision 7 posted to Appian Knowledge Base by carmen.cohen on 4/16/2026 2:12:13 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it using the following commands.
1. Check the table to confirm the affected index. Check table <table_name>;
2. Show create table <table_name>;
3. Alter table <table_name> drop index <index_name>;
4. Alter table <table_name> add index <index_name>(cols);
5. Check table <table_name>;

Affected Versions

This article applies to all versions of Appian.
This article applies to all versions of Appian Cloud.

Last Reviewed: Month YYYY

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Thu, 16 Apr 2026 10:10:59 GMT

Revision 6 posted to Appian Knowledge Base by carmen.cohen on 4/16/2026 10:10:59 AM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it using the following commands.
1. Check table <table_name>;
2. Show create table <table_name>;
3. Alter table <table_name> drop index <index_name>;
4. Alter table <table_name> add index <index_name>(cols);
5. Check table <table_name>;

Affected Versions

This article applies to all versions of Appian.
This article applies to all versions of Appian Cloud.

Last Reviewed: Month YYYY

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Thu, 16 Apr 2026 10:08:18 GMT

Revision 5 posted to Appian Knowledge Base by carmen.cohen on 4/16/2026 10:08:18 AM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it.
1. Check table <table_name>;
2. Show create table <table_name>;
3. Alter table <table_name> drop index <index_name>;
4. Alter table <table_name> add index <index_name>(cols);
5. Check table <table_name>;

Affected Versions

This article applies to all versions of Appian.
This article applies to all versions of Appian Cloud.

Last Reviewed: Month YYYY

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Tue, 14 Apr 2026 10:46:22 GMT

Revision 4 posted to Appian Knowledge Base by carmen.cohen on 4/14/2026 10:46:22 AM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it.
1. Check table <table_name>;
2. Show create table <table_name>;
3. Alter table <table_name> drop index <index_name>;
4. Alter table <table_name> add index <index_name>(cols);

Affected Versions

This article applies to all versions of Appian.
This article applies to all versions of Appian Cloud.

Last Reviewed: Month YYYY

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Thu, 09 Apr 2026 16:03:16 GMT

Revision 3 posted to Appian Knowledge Base by carmen.cohen on 4/9/2026 4:03:16 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it.
1. Show create table <table_name>;
2. Alter table <table_name> drop index <index_name>;
3. Alter table <table_name> add index <index_name>(cols);

Affected Versions

This article applies to all versions of Appian.
This article applies to all versions of Appian Cloud.

Last Reviewed: Month YYYY

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

carmen.cohen — Thu, 09 Apr 2026 15:51:43 GMT

Revision 2 posted to Appian Knowledge Base by carmen.cohen on 4/9/2026 3:51:43 PM

Purpose

Instructions

Open the phpMyAdmin interface.
Using the index definition in the table, drop and recreate it.
1. Show create table <table_name>;
2. Alter table <table_name> drop index <index_name>;
3. Alter table <table_name> add index <index_name>(cols);

Affected Versions

This article applies to all versions of Appian.
This article applies to all versions of Appian Cloud.

Last Reviewed: Month YYYY

[DRAFT][NEW] KB-XXXX How to fix corrupt database table index from phpMyAdmin

Kaushal Patel — Wed, 08 Apr 2026 14:52:23 GMT

Revision 1 posted to Appian Knowledge Base by Kaushal Patel on 4/8/2026 2:52:23 PM

This article serves as a template that you can copy/paste into a new article for use later on. This template can be used to outline steps on troubleshooting certain types of issues/enabling loggers/performing certain steps to achieve a desired outcome in the product. They must be relevant to Appian or any of the third-party software Appian uses to run, such as JBoss or MySQL. It can either be internal or external.

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Affected Versions

This section includes any relevant version information for Appian or other third/party configurations. Some examples of valid affected versions are as follows:

This article applies to all versions of Appian.
This article applies to all self-managed versions of Appian.
This article applies to all versions of Appian Cloud.
This article applies to Appian 7.11 and later.
This article applies to Appian 16.2 and earlier.
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This article applies to self-managed Appian 19.3 and earlier.
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This article applies to all versions of Appian using JBoss EAP 6.4.9 as an application server and Internet Explorer 9 as a web browser.

Last Reviewed: Month YYYY