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Editorial Team
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Asked: 2026-06-10T21:25:22+00:00

recently our Magento store has become extremely slow. We dont really know why. Just

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recently our Magento store has become extremely slow. We dont really know why.

Just today I noticed when I did a database check that more than 900 indexes are identical duplicates, i.e. two exist.

My question is: hoe can this impact performance? + if it does, how would I go about deleting one of the two.

Thanks, Sean

EXAMPLE

Problemen met The indexes van de tabel mag_eav_form_fieldset_label
The indexes IDX_MAG_EAV_FORM_FIELDSET_LABEL_STORE_ID en IDX_GALI_EAV_FORM_FIELDSET_LABEL_STORE_ID look the same, possibly one of both can be deleted.
The indexes IDX_MAG_EAV_FORM_FIELDSET_LABEL_FIELDSET_ID en IDX_GALI_EAV_FORM_FIELDSET_LABEL_FIELDSET_ID look the same, possibly one of both can be deleted.
The indexes IDX_MAG_EAV_FORM_FIELDSET_LABEL_STORE_ID en IDX_EAV_FORM_FIELDSET_LABEL_STORE_ID look the same, possibly one of both can be deleted.
The indexes IDX_MAG_EAV_FORM_FIELDSET_LABEL_FIELDSET_ID en IDX_EAV_FORM_FIELDSET_LABEL_FIELDSET_ID look the same, possibly one of both can be deleted.
Problemen met The indexes van de tabel mag_eav_form_type
The indexes IDX_MAG_EAV_FORM_TYPE_STORE_ID en IDX_GALI_EAV_FORM_TYPE_STORE_ID look the same, possibly one of both can be deleted.
The indexes IDX_MAG_EAV_FORM_TYPE_STORE_ID en IDX_EAV_FORM_TYPE_STORE_ID look the same, possibly one of both can be deleted.
The indexes UNQ_MAG_EAV_FORM_TYPE_CODE_THEME_STORE_ID en UNQ_GALI_EAV_FORM_TYPE_CODE_THEME_STORE_ID look the same, possibly one of both can be deleted.
The indexes UNQ_MAG_EAV_FORM_TYPE_CODE_THEME_STORE_ID en UNQ_EAV_FORM_TYPE_CODE_THEME_STORE_ID look the same, possibly one of both can be deleted.
Problemen met The indexes van de tabel mag_eav_form_type_entity
The indexes IDX_MAG_EAV_FORM_TYPE_ENTITY_ENTITY_TYPE_ID en IDX_GALI_EAV_FORM_TYPE_ENTITY_ENTITY_TYPE_ID look the same, possibly one of both can be deleted.

etc

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1 Answer

  1. Editorial Team

    if you want to delete them safely, i suggest you to use pt-duplicate-key-checker in Percona toolkit. It will generate the drop index SQL for you automatically.

    Too many indexes do decrease performance, especially for update and insert.
    You would better drop those useless indexes.

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